Error code · Room Air Conditioner

GE Zoneline AZ90 Code 6: Outdoor coil above 175°F, then lockout

High · stop use, call now

Code: 6
Appliance: Room Air Conditioner
Brand: GE
Warranty: 30-day workmanship

What 6 means

On GE Zoneline AZ90 and AZ91 single-package vertical units, including the AZ90E09D2C, code 6 means the outdoor coil has climbed above 175°F. The unit shuts down for 5 minutes and retries. After three failed attempts, operation is locked out. The room will stop cooling. Common causes are poor airflow across the outdoor side. The newer AZ95 generation uses code 6 for a compressor temperature-change error.

Common causes of 6

Outdoor coil airflow restricted
Debris or blockage at the outdoor grille
Outside fan or sealed system condition

✓ One safe check you can try

1. ENTER opens the code history; SCROLL advances through the entries. 2. Switch the unit off and let it rest. 3. From outside, if safe, check that the exterior grille is not blocked by leaves, dirt or a covering. 4. Try the unit again after it has cooled. 5. If it locks out again, leave it off and report it; hold ENTER and SCROLL for 3 to 6 seconds to clear history after service.

! Why to stop there

An overheated coil can come from airflow, the outside fan or the cooling circuit.
We check the outdoor air path first, then fan and sealed system operation.
The price is written before work begins, with a 30-day workmanship warranty on the repair.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Room Air Conditioner codes

Temperature display flashingGE Zoneline AZ41 AZ61 Temperature Display Flashing: Unit Alert 12GE Zoneline AZ95 Code 12: Display board link lost 10GE Zoneline AZ90 Code 10: FRZ room freeze protection running Filter Reset light / Check FilterGE Window AC Message "Check Filter": Filter Reset Light 13GE Zoneline AZ95 Code 13: Heater airflow trouble 11GE Zoneline AZ90 Code 11: Wall thermostat will not talk to the unit Cool light flashingGE Window AC Cool Light Flashing: Evaporator Coils Too Cold 17GE Zoneline AZ95 Code 17: Outlet thermistor open or shorted

66 questions

What happens after three retries?

The unit locks out its operation, so it will not run until the problem is cleared. Clearing history alone will not fix the cause. Clearing the history does not fix the cause.

Can a covered grille cause this?

Yes, restricted outdoor airflow is a common reason for a hot coil. Make sure nothing covers or blocks the exterior grille. Keep leaves and debris away from it.

Is the AZ95 code 6 related?

No. The AZ95 code 6 means no temperature change after one minute of compressor running, which is a separate condition. Check the label for the model generation.

Book a visit

Still seeing 6?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 547-5545