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NTI Error Codes & Diagnostic Codes

Updated · by Aurora Star Tech Inc.

NTI error codes and diagnostic codes: look up a code to see what it means, the likely causes and the steps to fix it.

NTI error codes by equipment type

NTI Boiler error codes

CodeMeaning
Alert 1Alert PCB was restored from factory defaults
Alert 1Alert PCB was restored from factory defaults
Alert 2Safety configuration parameters were restored from factory defaults
Alert 2Safety configuration parameters were restored from factory defaults
Alert 3Configuration parameters were restored from factory defaults
Alert 3Configuration parameters were restored from factory defaults
Alert 4Invalid Factory Invisibility PCB was detected
Alert 4Invalid Factory Invisibility PCB was detected
Alert 5Invalid Factory Range PCB was detected
Alert 5Invalid Factory Range PCB was detected
Alert 6Invalid range PCB record has been dropped
Alert 6Invalid range PCB record has been dropped
Alert 7EEPROM lockout history was initialized
Alert 7EEPROM lockout history was initialized
Alert 8Switched application annunciation data blocks
Alert 8Switched application annunciation data blocks
Alert 9Switched application configuration data blocks
Alert 9Switched application configuration data blocks
Alert 10Configuration was restored from factory defaults
Alert 10Configuration was restored from factory defaults
Alert 11Backup configuration settings was restored from active configuration
Alert 11Backup configuration settings was restored from active configuration
Alert 12Annunciation configuration was restored from factory defaults
Alert 12Annunciation configuration was restored from factory defaults
Alert 13Annunciation configuration was restored from backup
Alert 13Annunciation configuration was restored from backup
Alert 14Safety group verification table was restored from factory defaults
Alert 14Safety group verification table was restored from factory defaults
Alert 15Safety group verification table was updated
Alert 15Safety group verification table was updated
Alert 16Invalid Parameter PCB was detected
Alert 16Invalid Parameter PCB was detected
Alert 17Invalid Range PCB was detected
Alert 17Invalid Range PCB was detected
Alert 18Alarm silence time exceeded maximum
Alert 18Alarm silence time exceeded maximum
Alert 19Invalid safety group verification table was detected
Alert 19Invalid safety group verification table was detected
Alert 20Backdoor password could not be determined
Alert 21Invalid safety group verification table was not accepted
Alert 22CRC errors were found in application configuration data blocks
Alert 23Backup Alert PCB was restored from active one
Alert 25Lead Lag operation switch was turned OFF
Alert 26Lead Lag operation switch was turned ON
Alert 27Safety processor was reset
Alert 27Safety processor was reset
Alert 28Application processor was reset
Alert 28Application processor was reset
Alert 29Burner switch was turned OFF
Alert 29Burner switch was turned OFF
Alert 30Burner switch was turned ON
Alert 30Burner switch was turned ON
Alert 31Program Module (PM) was inserted into socket
Alert 31Program Module (PM) was inserted into socket
Alert 32Program Module (PM) was removed from socket
Alert 32Program Module (PM) was removed from socket
Alert 33Alert PCB was configured
Alert 33Alert PCB was configured
Alert 34Parameter PCB was configured
Alert 34Parameter PCB was configured
Alert 35Range PCB was configured
Alert 35Range PCB was configured
Alert 36Program Module (PM) incompatible with product was inserted into socket
Alert 36Program Module (PM) incompatible with product was inserted into socket
Alert 37Program Module application parameter revision differs from application processor
Alert 37Program Module application parameter revision differs from application processor
Alert 38Program Module safety parameter revision differs from safety processor
Alert 38Program Module safety parameter revision differs from safety processor
Alert 39PCB incompatible with product contained in Program Module
Alert 39PCB incompatible with product contained in Program Module
Alert 40Parameter PCB in Program Module is too large for product
Alert 40Parameter PCB in Program Module is too large for product
Alert 41Range PCB in Program Module was too large for product
Alert 41Range PCB in Program Module was too large for product
Alert 42Alert PCB in Program Module was too large for product
Alert 42Alert PCB in Program Module was too large for product
Alert 43IAS start check was forced on due to IAS enabled
Alert 43IAS start check was forced on due to IAS enabled
Alert 44Low voltage was detected in safety processor
Alert 44Low voltage was detected in safety processor
Alert 45High line frequency occurred
Alert 45High line frequency occurred
Alert 46Low line frequency occurred
Alert 46Low line frequency occurred
Alert 47Invalid subsystem reset request occurred
Alert 47Invalid subsystem reset request occurred
Alert 48Write large enumerated Modbus register value was not allowed
Alert 48Write large enumerated Modbus register value was not allowed
Alert 49Maximum cycle count was reached
Alert 49Maximum cycle count was reached
Alert 50Maximum hours count was reached
Alert 50Maximum hours count was reached
Alert 51Illegal Modbus write was attempted
Alert 51Illegal Modbus write was attempted
Alert 52Modbus write attempt was rejected (NOT ALLOWED)
Alert 52Modbus write attempt was rejected (NOT ALLOWED)
Alert 53Illegal Modbus read was attempted
Alert 53Illegal Modbus read was attempted
Alert 54Safety processor brown-out reset occurred
Alert 54Safety processor brown-out reset occurred
Alert 55Application processor watchdog reset occurred
Alert 55Application processor watchdog reset occurred
Alert 56Application processor brown-out reset occurred
Alert 56Application processor brown-out reset occurred
Alert 57Safety processor watchdog reset occurred
Alert 57Safety processor watchdog reset occurred
Alert 58Alarm was reset by the user at the control
Alert 58Alarm was reset by the user at the control
Alert 59Burner control firing rate was > absolute max rate
Alert 59Burner control firing rate was > absolute max rate
Alert 60Burner control firing rate was < absolute min rate
Alert 60Burner control firing rate was < absolute min rate
Alert 61Burner control firing rate was invalid, % vs. RPM
Alert 61Burner control firing rate was invalid, % vs. RPM
Alert 62Burner control was firing with no fan request
Alert 62Burner control was firing with no fan request
Alert 63Burner control rate (non-firing) was > absolute max rate
Alert 63Burner control rate (non-firing) was > absolute max rate
Alert 64Burner control rate (non-firing) was < absolute min rate
Alert 64Burner control rate (non-firing) was < absolute min rate
Alert 65Burner control rate (non-firing) was absent
Alert 65Burner control rate (non-firing) was absent
Alert 66Burner control rate (non-firing) was invalid, % vs. RPM
Alert 66Burner control rate (non-firing) was invalid, % vs. RPM
Alert 67Fan off cycle rate was invalid, % vs. RPM
Alert 67Fan off cycle rate was invalid, % vs. RPM
Alert 68Set point was over ridden due to sensor fault
Alert 68Set point was over ridden due to sensor fault
Alert 69Modulation was over ridden due to sensor fault
Alert 69Modulation was over ridden due to sensor fault
Alert 70No demand source was set due to demand priority conflicts
Alert 70No demand source was set due to demand priority conflicts
Alert 71CH 4-20mA signal was invalid.
Alert 71CH 4-20mA signal was invalid.
Alert 72Flame strength rate differential was invalid
Alert 73Flame strength step rate was invalid
Alert 74Periodic forced recycle
Alert 74Periodic forced recycle
Alert 75Absolute max fan speed was out of range
Alert 75Absolute max fan speed was out of range
Alert 76Absolute min fan speed was out of range
Alert 76Absolute min fan speed was out of range
Alert 77Fan gain down was invalid
Alert 77Fan gain down was invalid
Alert 78Fan gain up was invalid
Alert 78Fan gain up was invalid
Alert 79Fan minimum duty cycle was invalid
Alert 79Fan minimum duty cycle was invalid
Alert 80Fan pulses per revolution was invalid
Alert 80Fan pulses per revolution was invalid
Alert 81Fan PWM frequency was invalid
Alert 81Fan PWM frequency was invalid
Alert 84Lead Lag CH 4-20mA water temperature setting was invalid
Alert 85No Lead Lag add stage error threshold was configured
Alert 86No Lead Lag add stage detection time was configured
Alert 87No Lead Lag drop stage error threshold was configured
Alert 88No Lead Lag drop stage detection time was configured
Alert 89Lead Lag all boiler off threshold was invalid
Alert 90Modulation output type was invalid
Alert 90Modulation output type was invalid
Alert 91Firing rate control parameter was invalid
Alert 91Firing rate control parameter was invalid
Alert 92Forced rate was out of range vs. min/max modulation
Alert 92Forced rate was out of range vs. min/max modulation
Alert 93Forced rate was invalid, % vs. RPM
Alert 93Forced rate was invalid, % vs. RPM
Alert 94Slow start ramp value was invalid
Alert 94Slow start ramp value was invalid
Alert 95Slow start degrees value was invalid
Alert 95Slow start degrees value was invalid
Alert 96Slow start was ended due to outlet sensor fault
Alert 96Slow start was ended due to outlet sensor fault
Alert 97Slow start was end due to reference set point fault
Alert 97Slow start was end due to reference set point fault
Alert 98CH max modulation rate was invalid, % vs. RPM
Alert 98CH max modulation rate was invalid, % vs. RPM
Alert 99CH max modulation rate was > absolute max rate
Alert 99CH max modulation rate was > absolute max rate
Alert 100CH modulation range (max minus min) was too small (< 4% or 40 RPM)
Alert 100CH modulation range (max minus min) was too small (< 4% or 40 RPM)
Alert 101DHW max modulation rate was invalid, % vs. RPM
Alert 101DHW max modulation rate was invalid, % vs. RPM
Alert 102DHW max modulation rate was > absolute max rate
Alert 102DHW max modulation rate was > absolute max rate
Alert 103DHW modulation range (max minus min) was too small (< 4% or 40 RPM)
Alert 103DHW modulation range (max minus min) was too small (< 4% or 40 RPM)
Alert 104Min modulation rate was < absolute min rate
Alert 104Min modulation rate was < absolute min rate
Alert 105Min modulation rate was invalid, % vs. RPM
Alert 105Min modulation rate was invalid, % vs. RPM
Alert 106Manual rate was invalid, % vs. RPM
Alert 106Manual rate was invalid, % vs. RPM
Alert 107Slow start enabled, but forced rate was invalid
Alert 107Slow start enabled, but forced rate was invalid
Alert 108Analog output hysteresis was invalid
Alert 108Analog output hysteresis was invalid
Alert 109Analog modulation output type was invalid
Alert 109Analog modulation output type was invalid
Alert 110IAS open rate differential was invalid
Alert 110IAS open rate differential was invalid
Alert 111IAS open step rate was invalid
Alert 111IAS open step rate was invalid
Alert 112Mix max modulation rate was invalid, % vs. RPM
Alert 113Mix max modulation rate was > absolute max or < absolute min rates
Alert 114Mix modulation range (max minus min) was too small (< 4% or 40 RPM)
Alert 115Fan was limited to its minimum duty cycle
Alert 115Fan was limited to its minimum duty cycle
Alert 116Manual rate was > CH max modulation rate
Alert 116Manual rate was > CH max modulation rate
Alert 117Manual rate was > DHW max modulation rate
Alert 117Manual rate was > DHW max modulation rate
Alert 118Manual rate was < min modulation rate
Alert 118Manual rate was < min modulation rate
Alert 119Manual rate in Standby was > absolute max rate
Alert 119Manual rate in Standby was > absolute max rate
Alert 120Modulation commanded rate was > CH max modulation rate
Alert 120Modulation commanded rate was > CH max modulation rate
Alert 121Modulation commanded rate was > DHW max modulation rate
Alert 121Modulation commanded rate was > DHW max modulation rate
Alert 122Modulation commanded rate was < min modulation rate
Alert 122Modulation commanded rate was < min modulation rate
Alert 123Modulation rate was limited due to outlet limit
Alert 123Modulation rate was limited due to outlet limit
Alert 124Modulation rate was limited due to Delta-T limit
Alert 124Modulation rate was limited due to Delta-T limit
Alert 125Modulation rate was limited due to stack limit
Alert 125Modulation rate was limited due to stack limit
Alert 126Modulation rate was limited due to anti-condensation
Alert 126Modulation rate was limited due to anti-condensation
Alert 127Fan Speed out of range in RUN
Alert 127Fan Speed out of range in RUN
Alert 128Modulation limited - air switch open
Alert 128Modulation limited - air switch open
Alert 129Slow start ramp setting of zero will result in no modulation rate change
Alert 129Slow start ramp setting of zero will result in no modulation rate change
Alert 130No forced rate was configured for slow start ramp
Alert 130No forced rate was configured for slow start ramp
Alert 131CH demand source was invalid
Alert 131CH demand source was invalid
Alert 132CH P-gain was invalid
Alert 132CH P-gain was invalid
Alert 133CH I-gain was invalid
Alert 133CH I-gain was invalid
Alert 134CH D-gain was invalid
Alert 134CH D-gain was invalid
Alert 135CH OFF hysteresis was invalid
Alert 135CH OFF hysteresis was invalid
Alert 136CH ON hysteresis was invalid
Alert 136CH ON hysteresis was invalid
Alert 137CH sensor type was invalid
Alert 137CH sensor type was invalid
Alert 138CH hysteresis step time was invalid
Alert 138CH hysteresis step time was invalid
Alert 139CH remote control parameter was invalid
Alert 139CH remote control parameter was invalid
Alert 140CH ODR not allowed with remote control
Alert 140CH ODR not allowed with remote control
Alert 146CH control was suspended due to fault
Alert 146CH control was suspended due to fault
Alert 147CH header temperature was invalid
Alert 147CH header temperature was invalid
Alert 148CH outlet temperature was invalid
Alert 148CH outlet temperature was invalid
Alert 149CH steam pressure was invalid
Alert 149CH steam pressure was invalid
Alert 151Minimum water temperature parameter was greater than setpoint
Alert 152Minimum water temperature parameter was greater than time of day setpoint
Alert 155CH modulation rate source parameter was invalid
Alert 157DHW demand source was invalid
Alert 157DHW demand source was invalid
Alert 158DHW P-gain was invalid
Alert 158DHW P-gain was invalid
Alert 159DHW I-gain was invalid
Alert 159DHW I-gain was invalid
Alert 160DHW D-gain was invalid
Alert 160DHW D-gain was invalid
Alert 161DHW OFF hysteresis was invalid
Alert 161DHW OFF hysteresis was invalid
Alert 162DHW ON hysteresis was invalid
Alert 162DHW ON hysteresis was invalid
Alert 163DHW hysteresis step time was invalid
Alert 163DHW hysteresis step time was invalid
Alert 164DHW sensor type was invalid
Alert 164DHW sensor type was invalid
Alert 165Inlet sensor type was invalid for DHW
Alert 165Inlet sensor type was invalid for DHW
Alert 166Outlet sensor type was invalid for DHW
Alert 166Outlet sensor type was invalid for DHW
Alert 167DHW storage OFF hysteresis was invalid
Alert 168DHW storage ON hysteresis was invalid
Alert 169DHW modulation sensor type was invalid
Alert 170DHW modulation sensor was not compatible for Auto mode
Alert 171DHW control was suspended due to fault
Alert 171DHW control was suspended due to fault
Alert 172DHW temperature was invalid
Alert 172DHW temperature was invalid
Alert 173DHW inlet temperature was invalid
Alert 173DHW inlet temperature was invalid
Alert 174DHW outlet temperature was invalid
Alert 174DHW outlet temperature was invalid
Alert 175DHW high limit must be disabled for Auto mode
Alert 176DHW sensor type was not compatible for Auto mode
Alert 177DHW priority source setting was invalid
Alert 178DHW priority method setting was invalid
Alert 179CH S5 (J8-11) sensor was invalid
Alert 180CH Inlet temperature was invalid
Alert 181CH S10 (J10-7) sensor was invalid
Alert 182Lead Lag CH setpoint source was invalid
Alert 183Lead Lag P-gain was invalid
Alert 183Lead Lag P-gain was invalid
Alert 184Lead Lag I-gain was invalid
Alert 184Lead Lag I-gain was invalid
Alert 185Lead Lag D-gain was invalid
Alert 185Lead Lag D-gain was invalid
Alert 186Lead Lag OFF hysteresis was invalid
Alert 186Lead Lag OFF hysteresis was invalid
Alert 187Lead Lag ON hysteresis was invalid
Alert 187Lead Lag ON hysteresis was invalid
Alert 188Lead Lag slave enable was invalid
Alert 188Lead Lag slave enable was invalid
Alert 189Lead Lag hysteresis step time was invalid
Alert 189Lead Lag hysteresis step time was invalid
Alert 190No Lead Lag Modbus port was assigned
Alert 191Lead Lag base load common setting was invalid
Alert 192Lead Lag DHW demand switch setting was invalid
Alert 193Lead Lag Mix demand switch setting was invalid
Alert 194Lead Lag modulation sensor setting was invalid
Alert 195Lead Lag backup modulation sensor setting was invalid
Alert 196Lead Lag slave mode setting was invalid
Alert 197Lead Lag rate allocation setting was invalid
Alert 198Lead selection setting was invalid
Alert 204Lead Lag master was suspended due to fault
Alert 205Lead Lag slave was suspended due to fault
Alert 206Lead-lag header temperature invalid
Alert 206Lead-lag header temperature invalid
Alert 207Lead Lag was suspended due to no enabled Program Module installed
Alert 208Lead Lag slave session has timed out
Alert 222CH frost protection temperature was invalid
Alert 223CH frost protection inlet temperature was invalid
Alert 224DHW frost protection temperature was invalid
Alert 231LL set point was invalid
Alert 232LL time of day set point was invalid
Alert 233Lead-lag outdoor temperature invalid
Alert 233Lead-lag outdoor temperature invalid
Alert 234LL ODR time of day set point was invalid
Alert 235LL ODR time of day set point exceeded normal set point
Alert 236LL max outdoor set point was invalid
Alert 237LL min outdoor set point was invalid
Alert 238LL min water set point was invalid
Alert 239LL outdoor temperature range was too small (minimum 12 C / 22 F)
Alert 240LL water temperature range was too small (minimum 12 C / 22 F)
Alert 246CH set point was invalid
Alert 247CH time of day set point was invalid
Alert 248CH outdoor temperature invalid
Alert 248CH outdoor temperature invalid
Alert 249CH ODR time of day setpoint was invalid
Alert 250CH ODR time of day set point exceeds normal set point
Alert 251CH max outdoor set point was invalid
Alert 252CH min outdoor setp oint was invalid
Alert 253CH min water set point was invalid
Alert 254CH outdoor temperature range was too small (minimum 12 C / 22 F)
Alert 255CH water temperature range was too small (minimum 12 C / 22 F)
Alert 261DHW set point was invalid
Alert 262DHW time of day set point was invalid
Alert 272Abnormal Recycle: Pressure sensor fault
Alert 273Abnormal Recycle: Safety relay drive test failed
Alert 274Abnormal Recycle: Demand off during Pilot Flame Establishing Period
Alert 275Abnormal Recycle: LCI off during Drive to Purge Rate
Alert 276Abnormal Recycle: LCI off during Measured Purge Time
Alert 277Abnormal Recycle: LCI off during Drive to Light off Rate
Alert 278Abnormal Recycle: LCI off during Pre-Ignition test
Alert 279Abnormal Recycle: LCI off during Pre-Ignition time
Alert 280Abnormal Recycle: LCI off during Main Flame Establishing Period
Alert 281Abnormal Recycle: LCI off during Ignition period
Alert 282Abnormal Recycle: Demand off during Drive to Purge Rate
Alert 283Abnormal Recycle: Demand off during Measured Purge Time
Alert 284Abnormal Recycle: Demand off during Drive to Light off Rate
Alert 285Abnormal Recycle: Demand off during Pre-Ignition test
Alert 286Abnormal Recycle: Demand off during Pre-Ignition time
Alert 287Abnormal Recycle: Flame was on during Safe Start check
Alert 288Abnormal Recycle: Flame was on during Drive to Purge Rate
Alert 289Abnormal Recycle: Flame was on during Measured Purge Time
Alert 290Abnormal Recycle: Flame was on during Drive to Light off Rate
Alert 291Abnormal Recycle: Flame was not on at end of Ignition period
Alert 292Abnormal Recycle: Flame was lost during Main Flame Establishing Period
Alert 293Abnormal Recycle: Flame was lost early in Run
Alert 294Abnormal Recycle: Flame was lost during Run
Alert 295Abnormal Recycle: Leakage test failed
Alert 296Abnormal Recycle: Interrupted air flow switch was off during Drive to Purge Rate
Alert 297Abnormal Recycle: Interrupted air flow switch was off during Measured Purge Time
Alert 298Abnormal Recycle: Interrupted air flow switch was off during Drive to Light off Rate
Alert 299Abnormal Recycle: Interrupted air flow switch was off during Pre-Ignition test
Alert 300Abnormal Recycle: Interrupted air flow switch was off during Pre-Ignition time
Alert 301Abnormal Recycle: Interrupted air flow switch was off during Main Flame Establishing Period
Alert 302Abnormal Recycle: Ignition failed due to interrupted air flow switch was off
Alert 303Abnormal Recycle: ILK off during Drive to Purge Rate
Alert 304Abnormal Recycle: ILK off during Measured Purge Time
Alert 305Abnormal Recycle: ILK off during Drive to Light off Rate
Alert 306Abnormal Recycle: ILK off during Pre-Ignition test
Alert 307Abnormal Recycle: ILK off during Pre-Ignition time
Alert 308Abnormal Recycle: ILK off during Main Flame Establishing Period
Alert 309Abnormal Recycle: ILK off during Ignition period
Alert 310Run was terminated due to ILK was off
Alert 311Run was terminated due to interrupted air flow switch was off
Alert 312Stuck reset switch
Alert 313Run was terminated due to fan failure
Alert 314Abnormal Recycle: Fan failed during Drive to Purge Rate
Alert 315Abnormal Recycle: Fan failed during Measured Purge Time
Alert 316Abnormal Recycle: Fan failed during Drive to Light off Rate
Alert 317Abnormal Recycle: Fan failed during Pre-Ignition test
Alert 318Abnormal Recycle: Fan failed during Pre-Ignition time
Alert 319Abnormal Recycle: Fan failed during Ignition period
Alert 320Abnormal Recycle: Fan failed during Main Flame Establishing Period
Alert 321Abnormal Recycle: Main Valve off after 10 seconds of RUN
Alert 322Abnormal Recycle: Pilot Valve off after 10 seconds of RUN
Alert 323Abnormal Recycle: Safety Relay off after 10 seconds of RUN
Alert 324Abnormal Recycle: Hardware flame bias
Alert 325Abnormal Recycle: Hardware static flame
Alert 326Abnormal Recycle: Hardware flame current invalid
Alert 327Abnormal Recycle: Hardware flame rod short
Alert 328Abnormal Recycle: Hardware invalid power
Alert 329Abnormal Recycle: Hardware invalid AC line
Alert 330Abnormal Recycle: Hardware SLO flame ripple
Alert 331Abnormal Recycle: Hardware SLO flame sample
Alert 332Abnormal Recycle: Hardware SLO flame bias range
Alert 333Abnormal Recycle: Hardware SLO flame bias heat
Alert 334Abnormal Recycle: Hardware SLO spark stuck
Alert 335Abnormal Recycle: Hardware SLO spark changed
Alert 336Abnormal Recycle: Hardware SLO static flame
Alert 337Abnormal Recycle: Hardware SLO rod shorted
Alert 338Abnormal Recycle: Hardware SLO AD linearity
Alert 339Abnormal Recycle: Hardware SLO bias not set
Alert 340Abnormal Recycle: Hardware SLO bias shorted
Alert 341Abnormal Recycle: Hardware SLO electronics
Alert 342Abnormal Recycle: Hardware processor clock
Alert 343Abnormal Recycle: Hardware AC phase
Alert 344Abnormal Recycle: Hardware A2D mismatch
Alert 345Abnormal Recycle: Hardware VSNSR A2D
Alert 346Abnormal Recycle: Hardware 28V A2D
Alert 347Abnormal Recycle: Hardware HFS IAS shorted
Alert 348Abnormal Recycle: Hardware PII INTLK shorted
Alert 349Abnormal Recycle: Hardware HFS LCI shorted
Alert 350Abnormal Recycle: Hardware HFS LFS shorted
Alert 351Abnormal Recycle: Invalid zero crossing
Alert 352Abnormal Recycle: fault stack sensor
Alert 353Abnormal Recycle: stack limit
Alert 354Abnormal Recycle: delta T limit
Alert 355Abnormal Recycle: fault outlet sensor
Alert 356Abnormal Recycle: outlet high limit
Alert 357Abnormal Recycle: fault DHW sensor
Alert 358Abnormal Recycle: DHW high limit
Alert 359Abnormal Recycle: fault inlet sensor
Alert 360Abnormal Recycle: Check Parameters Failed
Alert 361Internal error: No factory parameters were detected in control
Alert 362Internal error: PID iteration frequency was invalid
Alert 363Internal error: Demand-Rate interval time was invalid
Alert 364Internal error: Factory calibration parameter for modulation was invalid
Alert 365Internal error: CH PID P-scaler was invalid
Alert 366Internal error: CH PID I-scaler was invalid
Alert 367Internal error: CH PID D-scaler was invalid
Alert 368Internal error: DHW PID P-scaler was invalid
Alert 369Internal error: DHW PID I-scaler was invalid
Alert 370Internal error: DHW PID D-scaler was invalid
Alert 371Internal error: Lead Lag master PID P-scaler was invalid
Alert 372Internal error: Lead Lag master PID I-scaler was invalid
Alert 373Internal error: Lead Lag master PID D-scaler was invalid
Alert 448Flame too low - burner shut down
Alert 449Modulation limited by flame strength
Alert 449Modulation limited by flame strength
Alert 460LCI demand lost in run
Alert 461Demand lost in run
Alert 462STAT demand lost in run
Alert 463Demand lost in run due to no flame
Alert 467Internal error: EEPROM write was attempted before EEPROM was initialized
Alert 468Internal error: EEPROM cycle count address was invalid
Alert 469Internal error: EEPROM days count address was invalid
Alert 470Internal error: EEPROM hours count address was invalid
Alert 471Internal error: Lockout record EEPROM index was invalid
Alert 472Internal error: Request to write PM status was invalid
Alert 473Internal error: PM parameter address was invalid
Alert 474Internal error: PM safety parameter address was invalid
Alert 475Internal error: Invalid record in lockout history was removed
Alert 476Internal error: EEPROM write buffer was full
Alert 477Internal error: Data too large was not written to EEPROM
Alert 478Internal error: Safety key bit 0 was incorrect
Alert 479Internal error: Safety key bit 1 was incorrect
Alert 480Internal error: Safety key bit 2 was incorrect
Alert 481Internal error: Safety key bit 3 was incorrect
Alert 482Internal error: Safety key bit 4 was incorrect
Alert 483Internal error: Safety key bit 5 was incorrect
Alert 484Internal error: Safety key bit 6 was incorrect
Alert 485Internal error: Safety key bit 7 was incorrect
Alert 486Internal error: Safety key bit 8 was incorrect
Alert 487Internal error: Safety key bit 9 was incorrect
Alert 488Internal error: Safety key bit 10 was incorrect
Alert 489Internal error: Safety key bit 11 was incorrect
Alert 490Internal error: Safety key bit 12 was incorrect
Alert 491Internal error: Safety key bit 13 was incorrect
Alert 492Internal error: Safety key bit 14 was incorrect
Alert 493Internal error: Safety key bit 15 was incorrect
Alert 494Internal error: Safety relay timeout
Alert 495Internal error: Safety relay commanded off
Alert 496Internal error: Unknown safety error occurred
Alert 497Internal error: Safety timer was corrupt
Alert 498Internal error: Safety timer was expired
Alert 499Internal error: Safety timings
Alert 500Internal error: Safety shutdown
Hold / Lockout 9Flame bias out of range
Hold / Lockout 9Flame bias out of range
Hold / Lockout 13Internal fault: PII shorted to ILK
Hold / Lockout 13Internal fault: PII shorted to ILK
Hold / Lockout 14Internal fault: HFS shorted to LCI
Hold / Lockout 14Internal fault: HFS shorted to LCI
Hold / Lockout 67ILK off - interlock string open
Hold / Lockout 67ILK off - interlock string open
Hold / Lockout 79Outlet high limit
Hold / Lockout 79Outlet high limit
Hold / Lockout 81Delta T limit
Hold / Lockout 81Delta T limit
Hold / Lockout 85Inlet/outlet inversion limit
Hold / Lockout 85Inlet/outlet inversion limit
Hold / Lockout 88Outlet temperature rise limit
Hold / Lockout 88Outlet temperature rise limit
Hold / Lockout 105Flame detected out of sequence
Hold / Lockout 105Flame detected out of sequence
Hold / Lockout 128Fan speed failed during pre-purge
Hold / Lockout 128Fan speed failed during pre-purge
Hold / Lockout 129Fan speed failed during pre-ignition
Hold / Lockout 129Fan speed failed during pre-ignition
Hold / Lockout 130Fan speed failed during ignition
Hold / Lockout 130Fan speed failed during ignition
Hold / Lockout 149Flame detected
Hold / Lockout 149Flame detected
Hold / Lockout 151High fire switch ON
Hold / Lockout 151High fire switch ON
Hold / Lockout 152Combustion pressure ON
Hold / Lockout 152Combustion pressure ON
Hold / Lockout 153Combustion pressure OFF
Hold / Lockout 153Combustion pressure OFF
Hold / Lockout 154Purge fan switch ON
Hold / Lockout 154Purge fan switch ON
Hold / Lockout 155Purge fan switch OFF
Hold / Lockout 155Purge fan switch OFF
Hold / Lockout 156Combustion pressure and Flame ON
Hold / Lockout 156Combustion pressure and Flame ON
Hold / Lockout 240Invalid Outdoor connector type setting
Hold / Lockout 243Invalid UV with spark interference not compatible with Igniter on throughout
Hold 3Internal fault: Hardware fault
Hold 3Internal fault: Hardware fault
Hold 4Internal fault: Safety Relay key feedback error
Hold 4Internal fault: Safety Relay key feedback error
Hold 5Internal fault: Unstable power (DCDC) output
Hold 5Internal fault: Unstable power (DCDC) output
Hold 6Internal fault: Invalid processor clock
Hold 6Internal fault: Invalid processor clock
Hold 7Internal fault: Safety relay drive error
Hold 7Internal fault: Safety relay drive error
Hold 8Internal fault: Zero crossing not detected
Hold 8Internal fault: Zero crossing not detected
Hold 12Internal fault: Safety relay drive cap short
Hold 12Internal fault: Safety relay drive cap short
Hold 20Internal fault: Flame ripple and overflow
Hold 20Internal fault: Flame ripple and overflow
Hold 21Internal fault: Flame number of sample mismatch
Hold 21Internal fault: Flame number of sample mismatch
Hold 22Internal fault: Flame bias out of range
Hold 22Internal fault: Flame bias out of range
Hold 23Internal fault: Bias changed since heating cycle starts
Hold 23Internal fault: Bias changed since heating cycle starts
Hold 24Internal fault: Spark voltage stuck low or high
Hold 24Internal fault: Spark voltage stuck low or high
Hold 25Internal fault: Spark voltage changed too much during flame sensing time
Hold 25Internal fault: Spark voltage changed too much during flame sensing time
Hold 26Internal fault: Static flame ripple
Hold 26Internal fault: Static flame ripple
Hold 27Flame rod shorted to ground
Hold 27Flame rod shorted to ground
Hold 28Internal fault: A/D linearity test fails
Hold 28Internal fault: A/D linearity test fails
Hold 29Internal fault: Flame bias cannot be set in range
Hold 29Internal fault: Flame bias cannot be set in range
Hold 30Internal fault: Flame bias shorted to adjacent pin
Hold 30Internal fault: Flame bias shorted to adjacent pin
Hold 31Internal fault: SLO electronics unknown error
Hold 31Internal fault: SLO electronics unknown error
Hold 47Flame rod to ground leakage
Hold 47Flame rod to ground leakage
Hold 48Static flame (not flickering)
Hold 48Static flame (not flickering)
Hold 4924VAC voltage low/high
Hold 4924VAC voltage low/high
Hold 50Modulation fault
Hold 50Modulation fault
Hold 51Pump fault
Hold 51Pump fault
Hold 52Motor tachometer fault
Hold 52Motor tachometer fault
Hold 61Anti short-cycle delay
Hold 61Anti short-cycle delay
Hold 62Fan speed not proved
Hold 62Fan speed not proved
Hold 63LCI off (limit control input)
Hold 63LCI off (limit control input)
Hold 65Interrupted air switch off
Hold 65Interrupted air switch off
Hold 66Interrupted air switch on
Hold 66Interrupted air switch on
Hold 69Pilot test hold
Hold 69Pilot test hold
Hold 70Wait for leakage test completion
Hold 70Wait for leakage test completion
Hold 78Demand lost in run
Hold 78Demand lost in run
Hold 91Inlet sensor fault
Hold 91Inlet sensor fault
Hold 92Outlet sensor fault
Hold 92Outlet sensor fault
Hold 93DHW sensor fault
Hold 93DHW sensor fault
Hold 94Header sensor fault
Hold 94Header sensor fault
Hold 95Stack sensor fault
Hold 95Stack sensor fault
Hold 96Outdoor sensor fault
Hold 96Outdoor sensor fault
Hold 100Pressure sensor fault
Hold 100Pressure sensor fault
Hold 110Ignition failure occurred
Hold 110Ignition failure occurred
Hold 111Flame current lower than WEAK threshold
Hold 111Flame current lower than WEAK threshold
Hold 118Controller interaction system fault
Hold 119Controller interaction communications fault
Hold 124High fire switch OFF
Hold 124High fire switch OFF
Hold 125High fire switch stuck ON
Hold 125High fire switch stuck ON
Hold 126Low fire switch OFF
Hold 126Low fire switch OFF
Hold 127Low fire switch stuck ON
Hold 127Low fire switch stuck ON
Hold 131Fan movement detected during standby
Hold 131Fan movement detected during standby
Hold 132Fan speed failed during run
Hold 132Fan speed failed during run
Hold 136Interrupted Airflow Switch failed to close
Hold 136Interrupted Airflow Switch failed to close
Hold 137ILK failed to close
Hold 137ILK failed to close
Hold 150Flame not detected
Hold 150Flame not detected
Lockout 1Unconfigured safety data
Lockout 1Unconfigured safety data
Lockout 2Waiting for safety data verification
Lockout 2Waiting for safety data verification
Lockout 10Internal fault: Invalid Burner control state
Lockout 10Internal fault: Invalid Burner control state
Lockout 11Internal fault: Invalid Burner control state flag
Lockout 11Internal fault: Invalid Burner control state flag
Lockout 15Internal fault: Safety relay test failed due to feedback ON
Lockout 15Internal fault: Safety relay test failed due to feedback ON
Lockout 16Internal fault: Safety relay test failed due to safety relay OFF
Lockout 16Internal fault: Safety relay test failed due to safety relay OFF
Lockout 17Internal fault: Safety relay test failed due to safety relay not OFF
Lockout 17Internal fault: Safety relay test failed due to safety relay not OFF
Lockout 18Internal fault: Safety relay test failed due to feedback not ON
Lockout 18Internal fault: Safety relay test failed due to feedback not ON
Lockout 19Internal fault: Safety RAM write
Lockout 19Internal fault: Safety RAM write
Lockout 32Internal fault: Safety Key 0
Lockout 32Internal fault: Safety Key 0
Lockout 33Internal fault: Safety Key 1
Lockout 33Internal fault: Safety Key 1
Lockout 34Internal fault: Safety Key 2
Lockout 34Internal fault: Safety Key 2
Lockout 35Internal fault: Safety Key 3
Lockout 35Internal fault: Safety Key 3
Lockout 36Internal fault: Safety Key 4
Lockout 36Internal fault: Safety Key 4
Lockout 37Internal fault: Safety Key 5
Lockout 37Internal fault: Safety Key 5
Lockout 38Internal fault: Safety Key 6
Lockout 38Internal fault: Safety Key 6
Lockout 39Internal fault: Safety Key 7
Lockout 39Internal fault: Safety Key 7
Lockout 40Internal fault: Safety Key 8
Lockout 40Internal fault: Safety Key 8
Lockout 41Internal fault: Safety Key 9
Lockout 41Internal fault: Safety Key 9
Lockout 42Internal fault: Safety Key 10
Lockout 42Internal fault: Safety Key 10
Lockout 43Internal fault: Safety Key 11
Lockout 43Internal fault: Safety Key 11
Lockout 44Internal fault: Safety Key 12
Lockout 44Internal fault: Safety Key 12
Lockout 45Internal fault: Safety Key 13
Lockout 45Internal fault: Safety Key 13
Lockout 46Internal fault: Safety Key 14
Lockout 46Internal fault: Safety Key 14
Lockout 53AC inputs phase reversed
Lockout 53AC inputs phase reversed
Lockout 54Safety GVT model ID doesn���t match application���s model ID
Lockout 55Application configuration data block CRC errors
Lockout 58Internal fault: HFS shorted to IAS
Lockout 58Internal fault: HFS shorted to IAS
Lockout 59Internal fault: Mux pin shorted
Lockout 59Internal fault: Mux pin shorted
Lockout 60Internal fault: HFS shorted to LFS
Lockout 60Internal fault: HFS shorted to LFS
Lockout 71Input power frequency mismatch
Lockout 82Stack limit
Lockout 82Stack limit
Lockout 97Internal fault: A2D mismatch
Lockout 97Internal fault: A2D mismatch
Lockout 98Internal fault: Exceeded VSNSR voltage tolerance
Lockout 98Internal fault: Exceeded VSNSR voltage tolerance
Lockout 99Internal fault: Exceeded 28V voltage tolerance
Lockout 99Internal fault: Exceeded 28V voltage tolerance
Lockout 106Flame lost in MFEP
Lockout 106Flame lost in MFEP
Lockout 107Flame lost early in run
Lockout 107Flame lost early in run
Lockout 108Flame lost in run
Lockout 108Flame lost in run
Lockout 109Ignition failed
Lockout 109Ignition failed
Lockout 112Pilot test flame timeout
Lockout 112Pilot test flame timeout
Lockout 113Flame circuit timeout
Lockout 113Flame circuit timeout
Lockout 122Light off rate proving failed
Lockout 122Light-off rate proving failed
Lockout 123Purge rate proving failed
Lockout 123Purge rate proving failed
Lockout 138Flame too low
Lockout 143Internal fault: Flame bias out of range 1
Lockout 144Internal fault: Flame bias out of range 2
Lockout 145Internal fault: Flame bias out of range 3
Lockout 146Internal fault: Flame bias out of range 4
Lockout 147Internal fault: Flame bias out of range 5
Lockout 148Internal fault: Flame bias out of range 6
Lockout 157Combustion pressure and Flame OFF
Lockout 157Combustion pressure and Flame OFF
Lockout 158Main valve ON
Lockout 158Main valve ON
Lockout 159Main valve OFF
Lockout 159Main valve OFF
Lockout 160Ignition ON
Lockout 160Ignition ON
Lockout 161Ignition OFF
Lockout 161Ignition OFF
Lockout 162Pilot valve ON
Lockout 162Pilot valve ON
Lockout 163Pilot valve OFF
Lockout 163Pilot valve OFF
Lockout 164Block intake ON
Lockout 164Block intake ON
Lockout 165Block intake OFF
Lockout 165Block intake OFF
Lockout 169Safety opto bad in test state
Lockout 170Safety relay opto feedback incorrect
Lockout 171Safety relay feedback incorrect in run
Lockout 172Main relay feedback incorrect
Lockout 172Main relay feedback incorrect
Lockout 173Pilot relay feedback incorrect
Lockout 173Pilot relay feedback incorrect
Lockout 174Safety relay feedback incorrect
Lockout 174Safety relay feedback incorrect
Lockout 175Safety relay open
Lockout 175Safety relay open
Lockout 176Main relay ON at safe start check
Lockout 176Main relay ON at safe start check
Lockout 177Pilot relay ON at safe start check
Lockout 177Pilot relay ON at safe start check
Lockout 178Safety relay ON at safe start check
Lockout 178Safety relay ON at safe start check
Lockout 184Invalid BLOWER/HSI output setting
Lockout 184Invalid BLOWER/HSI output setting
Lockout 185Invalid Delta T limit enable setting
Lockout 185Invalid Delta T limit enable setting
Lockout 186Invalid Delta T limit response setting
Lockout 186Invalid Delta T limit response setting
Lockout 187Invalid DHW high limit enable setting
Lockout 187Invalid DHW high limit enable setting
Lockout 188Invalid DHW high limit response setting
Lockout 188Invalid DHW high limit response setting
Lockout 189Invalid Flame sensor type setting
Lockout 189Invalid Flame sensor type setting
Lockout 190Invalid interrupted air switch enable setting
Lockout 190Invalid interrupted air switch enable setting
Lockout 191Invalid interrupted air switch start check enable setting
Lockout 191Invalid interrupted air switch start check enable setting
Lockout 192Invalid Igniter on during setting
Lockout 192Invalid Igniter on during setting
Lockout 193Invalid Ignite failure delay setting
Lockout 193Invalid Ignite failure delay setting
Lockout 194Invalid Ignite failure response setting
Lockout 194Invalid Ignite failure response setting
Lockout 195Invalid Ignite failure retries setting
Lockout 195Invalid Ignite failure retries setting
Lockout 196Invalid Ignition source setting
Lockout 196Invalid Ignition source setting
Lockout 197Invalid Interlock open response setting
Lockout 197Invalid Interlock open response setting
Lockout 198Invalid Interlock start check setting
Lockout 198Invalid Interlock start check setting
Lockout 199Invalid LCI enable setting
Lockout 199Invalid LCI enable setting
Lockout 200Invalid light off rate setting
Lockout 200Invalid light off rate setting
Lockout 201Invalid Light off rate proving setting
Lockout 201Invalid Light off rate proving setting
Lockout 202Invalid Main Flame Establishing Period time setting
Lockout 202Invalid Main Flame Establishing Period time setting
Lockout 203Invalid MFEP flame failure response setting
Lockout 203Invalid MFEP flame failure response setting
Lockout 204Invalid NTC sensor type setting
Lockout 204Invalid NTC sensor type setting
Lockout 205Invalid Outlet high limit response setting
Lockout 205Invalid Outlet high limit response setting
Lockout 206Invalid Pilot Flame Establishing Period setting
Lockout 206Invalid Pilot Flame Establishing Period setting
Lockout 207Invalid PII enable setting
Lockout 207Invalid PII enable setting
Lockout 208Invalid pilot test hold setting
Lockout 208Invalid pilot test hold setting
Lockout 209Invalid Pilot type setting
Lockout 209Invalid Pilot type setting
Lockout 210Invalid Post-purge time setting
Lockout 210Invalid Post-purge time setting
Lockout 211Invalid Power up with lockout setting
Lockout 211Invalid Power up with lockout setting
Lockout 212Invalid Pre-ignition time setting
Lockout 212Invalid Pre-ignition time setting
Lockout 213Invalid Pre-purge rate setting
Lockout 213Invalid Pre-purge rate setting
Lockout 214Invalid Pre-purge time setting
Lockout 214Invalid Pre-purge time setting
Lockout 215Invalid Purge rate proving setting
Lockout 215Invalid Purge rate proving setting
Lockout 216Invalid Run flame failure response setting
Lockout 216Invalid Run flame failure response setting
Lockout 217Invalid Run stabilization time setting
Lockout 217Invalid Run stabilization time setting
Lockout 218Invalid Stack limit enable setting
Lockout 218Invalid Stack limit enable setting
Lockout 219Invalid Stack limit response setting
Lockout 219Invalid Stack limit response setting
Lockout 220Unconfigured Delta T limit set point setting
Lockout 220Unconfigured Delta T limit set point setting
Lockout 221Unconfigured DHW high limit set point setting
Lockout 221Unconfigured DHW high limit set point setting
Lockout 222Unconfigured Outlet high limit set point setting
Lockout 222Unconfigured Outlet high limit set point setting
Lockout 223Unconfigured Stack limit set point setting
Lockout 223Unconfigured Stack limit set point setting
Lockout 224Invalid DHW demand source setting
Lockout 224Invalid DHW demand source setting
Lockout 225Invalid Flame threshold setting
Lockout 225Invalid Flame threshold setting
Lockout 226Invalid Outlet high limit set point setting
Lockout 226Invalid Outlet high limit set point setting
Lockout 227Invalid DHW high limit set point setting
Lockout 227Invalid DHW high limit set point setting
Lockout 228Invalid Stack limit set point setting
Lockout 228Invalid Stack limit set point setting
Lockout 229Invalid Modulation output setting
Lockout 229Invalid Modulation output setting
Lockout 230Invalid CH demand source setting
Lockout 230Invalid CH demand source setting
Lockout 231Invalid Delta T limit delay setting
Lockout 231Invalid Delta T limit delay setting
Lockout 232Invalid Pressure sensor type setting
Lockout 232Invalid Pressure sensor type setting
Lockout 233Invalid IAS closed response setting
Lockout 233Invalid IAS closed response setting
Lockout 234Invalid Outlet high limit enable setting
Lockout 234Invalid Outlet high limit enable setting
Lockout 235Invalid Outlet connector type setting
Lockout 235Invalid Outlet connector type setting
Lockout 236Invalid Inlet connector type setting
Lockout 236Invalid Inlet connector type setting
Lockout 237Invalid DHW connector type setting
Lockout 237Invalid DHW connector type setting
Lockout 238Invalid Stack connector type setting
Lockout 238Invalid Stack connector type setting
Lockout 239Invalid Header connector type setting
Lockout 239Invalid Header connector type setting
Lockout 240Invalid Outdoor connector type setting
Lockout 241Exchanger sensor not allowed with stack connector setting
Lockout 242Invalid DHW auto detect configuration
Lockout 244PFEP Internal fault: Safety relay test invalid state
Lockout 245Invalid Outlet connector type setting for T-rise
Lockout 2464-20mA cannot be used for both modulation and setpoint control
Lockout 247Invalid ILK bounce detection enable
Lockout 248Invalid forced recycle interval
Lockout 249STAT cannot be demand source when Remote Stat is enabled
Lockout 250Invalid Fan speed error response
Lockout 251Lead drop-stage on error setting does not match drop method configuration
Lockout 252Invalid Line frequency setting
Lockout 253Lead Lag modulation sensor not valid with setpoint source
Lockout 254Lead Lag modulation sensor not valid with local setpoint source
Lockout 255Lead Lag modulation sensor not valid with local modulation source
Lockout 256Selected Controller interaction enable setting is not allowed
Lockout 257Controller interaction enable does not match neighbor stack fault setting
Lockout 258Controller ID must be non-zero if controller interaction is enabled
Lockout 259Modulation output must be fan if controller interaction is enabled
Lockout 260Asymmetrical paired (no flap) is set but flap switch input is energized
Lockout 261Neighbor burner control blower fault detected
Lockout 262Blower fault detected during flap test
Lockout 263Invalid DHW demand temperature setting
Lockout 264Invalid preferred outlet high limit setting
Lockout 265Invalid preferred lightoff rate setting
Lockout 266Invalid preferred stack limit rate setting

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