HVACopediaKeepRite · Heat pump
Amber LED off Standby - no call (2-wire hookup or indoor unit unpowered)
What the display is showing
The amber status LED is dark. With only two thermostat wires the board loses power whenever there is no call, so no flash codes can be shown. It also looks like this if the indoor unit has no power. Normally nothing is wrong.
Applies to: *SA/*SH single-stage communicating board
Models that show this code
3 models in KeepRite *SA/*SH Single-Stage Communicating
Other codes on the same units
- 73 Contactor stuck closed
- 74 No 230 V at compressor
- 82 Thermal lockout (two-stage: high stage)
- 83 Low pressure lockout
- 84 High pressure lockout
- Amber 1 flash Running - cooling / low stage (normal)
- Amber LED on solid Standby - no call (communicating)
- Forced defrost pins Force a defrost cycle / skip the 5-minute delay
Save it for the next call
Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.
Source: KeepRite ICP split A-C + HP (R-410A & R-22) Application Guideline and Service Manual 421 08 5400 04, Table 13 Status Codes, p.46-47. Summarized in our own words; check the original manual for your model.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.