HVACopediaKeepRite · Air conditioner
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 (C and Y, with an R-Y jumper) the board loses power whenever there is no cooling 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: C4A3/CXA6 A-C; *SA/*SH single-stage communicating board
Settings for these units
Outdoor unit clearances · KeepRite C4A3/CXA6 AC
| Location | Minimum |
|---|---|
| Service end | 24 in. (610 mm) |
| Above unit | 48 in. (1219 mm) |
| One side | 6 in. (152 mm) |
| Other sides | 12 in. (305 mm) |
| Between units | 24 in. (610 mm); 18 in. (457 mm) with no overhang within 12 ft |
| Roof mount height above roof | 6 in. (152 mm) |
| Shrubs/fences from coil | 18 in. (457 mm) |
Keep roof run-off and snow from falling on the unit.
Unit must be level within 2 degrees.
Models that show this code
4 models in KeepRite C4A3/CXA6 AC, KeepRite *SA/*SH Single-Stage Communicating
Other codes on the same units
- 83 Low pressure lockout
- 84 High pressure lockout
- Amber 1 flash Running - cooling / low stage (normal)
- Amber LED on solid Standby - no call (communicating)
- Green COMM LED off No communication yet
- Green COMM LED on Communication with the system established
- Green POWER LED Comfort Alert module has power
- Red TRIP LED Comfort Alert TRIP - Y call but compressor not running
Save it for the next call
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Source: KeepRite ICP C4A3/H4A3/T4A3/CXA6 A-C Installation Instructions 421 01 5103 05, Table 1 Status Codes, p.17-18 and 2-wire hookup, p.16; split service manual Table 13 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.