NTI TRX150 Error Codes
NTI TRX150 error codes and diagnostic codes. The TRX150 is a NTI boiler in the TRX series.
NTI TRX150 error codes list
Troubleshooting the TRX150
- Condensing/corrosion of conventional boiler All brands · Boiler
- No heat or some zones cold All brands · Boiler
- Noise All brands · Boiler
- Poor heat / circulation All brands · Boiler
- Relief valve weeps every cycle / pressure climbs All brands · Boiler
- Short cycling / wasted fuel All brands · Boiler
- Symptoms of air in system All brands · Boiler
- Uneven heating All brands · Boiler
- Won't fire All brands · Boiler
- 3-way valve motor must be disconnected for heating-only use on TRX150 / TRX199 NTI · Boiler
- Access installer parameters in the boiler menu NTI · Boiler
- Access the low voltage wiring connections NTI · Boiler
- Access the technical menu NTI · Boiler
- Adjust parallel shift from home screen NTI · Boiler
- Antifreeze selection NTI · Boiler
- Auto Boost behaviour NTI · Boiler
- Blocking errors versus lockout errors NTI · Boiler
- Canada vent installation requirements NTI · Boiler
- Canadian vent installation requirements NTI · Boiler
- Carbon monoxide detector placement NTI · Boiler
- Central heating (CH) setpoint adjustment NTI · Boiler
- Check inlet gas pressure at the boiler NTI · Boiler
- Check the condensate drain NTI · Boiler
- Check water and gas piping NTI · Boiler
- Clean the heat exchanger and combustion chamber NTI · Boiler
- Combustion check at elevation above 2000 ft NTI · Boiler
- Condensate drain setup NTI · Boiler
- Condensate float switch NTI · Boiler
- Condensate line blocked (display error) NTI · Boiler
- Connect 120 V power for CH and DHW circulators NTI · Boiler
- Control panel buttons and display layout NTI · Boiler
- Day and night room setpoints NTI · Boiler
- Display icons and what they mean NTI · Boiler
- Do not add cold make-up water to a hot boiler NTI · Boiler
- Do not adjust excess flow valve screws without analyzer NTI · Boiler
- Do not fire the boiler before filling NTI · Boiler
- Domestic hot water (DHW) setpoint adjustment NTI · Boiler
- Drain the domestic hot water system and indirect tank NTI · Boiler
- Drain the heating system NTI · Boiler
- Excess flow valve (EFV) in the gas line NTI · Boiler
- Exhaust vent and intake pipe installation rules NTI · Boiler
- Exhaust vent slope, support and terminations NTI · Boiler
- Flame signal too low or flame loss NTI · Boiler
- Freeze protection is off when the boiler has no power NTI · Boiler
- Gas leak check before startup NTI · Boiler
- Gas line installation requirements NTI · Boiler
- Glycol limits for DHW and IWH loops NTI · Boiler
- Heating-only use on TRX150 / TRX199: disconnect the 3-way valve motor NTI · Boiler
- Install exhaust vent or intake pipe into the boiler collar NTI · Boiler
- Installation checklist sign-off (commissioning) NTI · Boiler
- Key installation checks before start-up NTI · Boiler
- Limit CO when adjusting high fire, low fire or the gas valve NTI · Boiler
- Lockout reset limit NTI · Boiler
- Massachusetts venting requirements NTI · Boiler
- Navigate the user menu NTI · Boiler
- Open the complete technical menu NTI · Boiler
- Operate the primary pressure relief valve (test) NTI · Boiler
- Overheat cutoff and lockout at 212°F NTI · Boiler
- Piping without an external central heating circulator (TRX150 / TRX199 and TRX199C) NTI · Boiler
- Power-on and operating modes NTI · Boiler
- Pre-start water chemistry and freeze protection NTI · Boiler
- Pressure test the gas supply NTI · Boiler
- Primary/secondary piping for TRX150 / TRX199 with separate central heating circulator NTI · Boiler
- Purge function access NTI · Boiler
- Reducing vent to 2 in on 150 models NTI · Boiler
- Remove the cabinet cover and control panel housing NTI · Boiler
- Reset after a lockout NTI · Boiler
- Scald risk at DHW temperatures NTI · Boiler
- Service clearances and combustible spacing NTI · Boiler
- Set date and time manually NTI · Boiler
- Sidewall concentric or low profile exhaust location NTI · Boiler
- Solvent cement cure and cleanup before start-up NTI · Boiler
- Start test mode for manual firing NTI · Boiler
- Summer/winter changeover operation NTI · Boiler
- System water fill, purge and test NTI · Boiler
- Test mode and test function buttons NTI · Boiler
- Thermostat circuit check (no voltage allowed) NTI · Boiler
- User maintenance checks NTI · Boiler
- Vent connection with PVC NTI · Boiler
- Vent diameter by model NTI · Boiler
- Vent insulation and material rules near the boiler NTI · Boiler
- Venting below an overhang (sidewall snorkel) NTI · Boiler
- Venting below grade and outdoor vent piping NTI · Boiler
- Venting material and adapter rules NTI · Boiler
- View the error history NTI · Boiler
- View the last 10 boiler errors NTI · Boiler
- Wire a room thermostat NTI · Boiler
- Wiring safety: label wires and keep 120 V away from control wiring NTI · Boiler
- Zone valve wiring for valve-based systems NTI · Boiler
Homeowner help: Boiler Not Heating: What to Check
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.