KeepRite Error Code Amber 1 flash: Running – cooling / low stage (normal) (Heat Pump)

Updated October 15, 2026 · by Aurora Star Tech Inc.

KeepRite error code Amber 1 flash on a heat pump means: Running - cooling / low stage (normal). It is also called KeepRite diagnostic code Amber 1 flash.

Low severityHeat PumpKeepRite *SA/*SH Single-Stage Communicating · KeepRite *CA/*CH Two-Stage Communicating

Homeowner? What KeepRite code Amber 1 flash means for you

Usually minor Your heat pump is reporting: Running - cooling / low stage (normal). This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

Safe things you can check yourself

Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977 Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does KeepRite error code Amber 1 flash mean?

One flash, then a pause, repeated. The outdoor board is running a call and nothing is wrong. Table 13 lists it as cooling operation on single-stage boards; on the two-stage boards it means low-stage cooling or heating.

Applies to: *SA/*SH and *CA/*CH communicating heat pump outdoor boards

Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

KeepRite models that use code Amber 1 flash

*CH624 *CH636 *CH648 *CH660 *CH924 *CH936 *CH948 *CH960 *SH4 *SH5 *SH6

Other KeepRite Heat Pump codes

Code	Meaning
73	Contactor stuck closed
74	No 230 V at compressor
81	Low stage thermal lockout
82	Thermal lockout (two-stage: high stage)
83	Low pressure lockout
84	High pressure lockout
Amber 2 flashes	High stage running (normal)
Amber 3 flashes	Outdoor fan delay after defrost is on (20 s)
Amber 4 flashes	Outdoor fan delay after defrost is defeated
Amber 5 flashes	Brown-out protection turned off (user setting)
Amber 6 flashes	Brown-out protection active (user setting)
Amber LED off	Standby - no call (2-wire hookup or indoor unit unpowered)

All KeepRite Heat Pump error codes →

KeepRite code Amber 1 flash: homeowner questions

What does KeepRite code Amber 1 flash mean?

Running - cooling / low stage (normal). One flash, then a pause, repeated. The outdoor board is running a call and nothing is wrong. Table 13 lists it as cooling operation on single-stage boards; on the two-stage boards it means low-stage cooling or heating.

Is it safe to keep using my heat pump with code Amber 1 flash?

Usually yes. Code Amber 1 flash is normally minor, but if it keeps coming back have it checked.

Can I reset KeepRite code Amber 1 flash myself?

You can try one reset (power off for 30 seconds, then on). If KeepRite code Amber 1 flash comes back, the cause is still there and a licensed technician should check it.

Who can fix KeepRite code Amber 1 flash near me?

Aurora Star Tech Inc. repairs KeepRite heat pumps in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: AC Running But Not Cooling: What to Check · Heat Pump Not Heating or Blowing Cold Air

Troubleshooting guides

Force a defrost cycle or skip the 5-minute delay KeepRite · Heat Pump
Forcing a defrost to test the board - KeepRite N4H4/R4H4/WCH4/NXH5 KeepRite · Heat Pump
Outdoor unit will not run or will not defrost - KeepRite heat pump defrost board (FAST 1173636/1177927/1190281) KeepRite · Heat Pump
Speed up the defrost timer for testing (J1 speed-up pins) KeepRite · Heat Pump
Switch the post-defrost outdoor fan delay off or on KeepRite · Heat Pump
Turn 230 V brown-out protection off or on KeepRite · Heat Pump

Source: KeepRite ICP split A-C + HP (R-410A & R-22) Application Guideline and Service Manual 421 08 5400 04, Table 13 p.46-47; Table 17 p.59-60. Written in our own words as a summary; always check the original manual.

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.