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Gree Error Code Cool lamp: Cool lamp lit (cooling mode) (Heat Pump)

Updated · by Aurora Star Tech Inc.

Gree error code Cool lamp on a heat pump means: Cool lamp lit (cooling mode). It is also called Gree diagnostic code Cool lamp.

Low severityHeat PumpGree Livo GEN4

Homeowner? What Gree code Cool lamp means for you

Usually minor Your heat pump is reporting: Cool lamp lit (cooling mode). 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) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Gree error code Cool lamp mean?

The Cool lamp on the indoor unit lights when cooling mode is selected. Some models do not have this lamp.

Applies to: Livo GEN4 30-36k (4LIV..HP230V1A)

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.

Gree models that use code Cool lamp

4LIV30HP230V1AH4LIV36HP230V1AH

Other Gree Heat Pump codes

CodeMeaning
C2Main board to compressor drive communication fault
C3Main board to fan drive communication fault
C4Missing indoor units
C5Jumper (capacity) cap missing or bad
CHIndoor capacity too high
CLIndoor capacity too low
CPMore than one master wired controller
d1Indoor main board fault
d3Indoor return air sensor open or shorted (15K)
d4Indoor coil inlet pipe sensor open or shorted (20K)
d5Indoor coil middle pipe sensor open or shorted (20K)
d6Indoor coil outlet pipe sensor open or shorted (20K)

All Gree Heat Pump error codes →

Gree code Cool lamp: homeowner questions

What does Gree code Cool lamp mean?

Cool lamp lit (cooling mode). The Cool lamp on the indoor unit lights when cooling mode is selected. Some models do not have this lamp.

Is it safe to keep using my heat pump with code Cool lamp?

Usually yes. Code Cool lamp is normally minor, but if it keeps coming back have it checked.

Can I reset Gree code Cool lamp myself?

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

Who can fix Gree code Cool lamp near me?

Aurora Star Tech Inc. repairs Gree 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

Source: Gree Livo GEN4 30-36k (4LIV30-36HP230V1A) service.pdf - section 6.1 remote controller, mode button. 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