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KeepRite Error Code Green POWER LED: Comfort Alert module has power (AC)

Updated · by Aurora Star Tech Inc.

KeepRite error code Green POWER LED on a air conditioner means: Comfort Alert module has power. It is also called KeepRite diagnostic code Green POWER LED.

Low severityAir ConditionerKeepRite C4A3/CXA6 AC

Homeowner? What KeepRite code Green POWER LED means for you

Usually minor Your air conditioner is reporting: Comfort Alert module has power. 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.
  • Keep about 2 feet around the outdoor unit clear of leaves, grass and debris.
  • If you see ice on the pipes or the indoor coil, turn the system off and run only the fan for a few hours, then call a technician.
  • 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) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does KeepRite error code Green POWER LED mean?

On units fitted with the Comfort Alert diagnostic module, a lit green POWER LED means supply voltage is reaching the module terminals. The red TRIP and yellow ALERT lights are listed separately.

Applies to: C4A3/CXA6 A-C with Comfort Alert module

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 Green POWER LED

C4A3CXA6

Other KeepRite AC codes

CodeMeaning
Amber 6 flashesBrown-out protection active (user setting)
Amber LED offStandby - no call (2-wire hookup or indoor unit unpowered)
Amber LED on solidStandby - no call (communicating)
Brown-out defeat toggleTurn 230 V brown-out protection off or on
Green COMM LED offNo communication yet
Green COMM LED onCommunication with the system established
Red TRIP LEDComfort Alert TRIP - Y call but compressor not running
TRIP + ALERT flashing togetherComfort Alert - control voltage too low to operate

All KeepRite Air Conditioner error codes →

KeepRite code Green POWER LED: homeowner questions

What does KeepRite code Green POWER LED mean?

Comfort Alert module has power. On units fitted with the Comfort Alert diagnostic module, a lit green POWER LED means supply voltage is reaching the module terminals. The red TRIP and yellow ALERT lights are listed separately.

Is it safe to keep using my air conditioner with code Green POWER LED?

Usually yes. Code Green POWER LED is normally minor, but if it keeps coming back have it checked.

Can I reset KeepRite code Green POWER LED myself?

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

Who can fix KeepRite code Green POWER LED near me?

Aurora Star Tech Inc. repairs KeepRite air conditioners 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

Troubleshooting guides

Source: KeepRite ICP C4A3/H4A3/T4A3/CXA6 A-C Installation Instructions 421 01 5103 05, Figure 15 Comfort Alert Diagnostics, p.13. 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.

Emergency HVAC Service

647-657-2977