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KeepRite Error Code Red TRIP LED: Comfort Alert TRIP – Y call but compressor not running (AC)

Updated · by Aurora Star Tech Inc.

KeepRite error code Red TRIP LED on a air conditioner means: Comfort Alert TRIP - Y call but compressor not running. It is also called KeepRite diagnostic code Red TRIP LED.

High severityAir ConditionerKeepRite C4A3/CXA6 AC

Homeowner? What KeepRite code Red TRIP LED means for you

Call a technician Your air conditioner is reporting: Comfort Alert TRIP - Y call but compressor not running. The air conditioner has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.

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 Red TRIP LED mean?

Red TRIP light: the module sees a Y1 demand but no compressor current.

Applies to: KeepRite CXA6/HXA6/TXA6 all sizes; C4A3/H4A3/T4A3 sizes 18 and 36-60 (Comfort Alert module)

Common causes of KeepRite code Red TRIP LED

  • Compressor protector open
  • Outdoor disconnect, breaker or fuses open
  • Broken wire or poor connector

A technician checks these and 2 other possible causes on site before replacing any part.

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 Red TRIP LED

C4A3CXA6

Other KeepRite AC codes

CodeMeaning
73Contactor stuck closed
74No 230 V at compressor
81Low stage thermal lockout
82Thermal lockout (two-stage: high stage)
83Low pressure lockout
84High pressure lockout
TRIP + ALERT flashing togetherComfort Alert - control voltage too low to operate

All KeepRite Air Conditioner error codes →

KeepRite code Red TRIP LED: homeowner questions

What does KeepRite code Red TRIP LED mean?

Comfort Alert TRIP - Y call but compressor not running. Red TRIP light: the module sees a Y1 demand but no compressor current.

Is it safe to keep using my air conditioner with code Red TRIP LED?

It depends on the cause. The air conditioner has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.

Can I reset KeepRite code Red TRIP LED myself?

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

Who can fix KeepRite code Red TRIP 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 Installation Instructions 421 01 5103 05, Fig. 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.

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