Gree Air Conditioner H1 Error Code

Defrosting (normal in heat mode) on Gree air conditioners.

Easy DIY fix

Not a fault. In heating, ice builds up on the outdoor coil, and the system reverses for a few minutes to melt it. GREE says H1 is a status code for defrost or oil return in heating mode.

Compatible models

Any GREE heat pump in heating mode. GREE lists it as a status code rather than tying it to models.

Also shown as

No other codes are listed for this fault.

Difficulty

Most people can clear this one at home with simple checks.

How to fix
When to call a pro
Parts
FAQ

Not sure you are reading the code right? See how to read Gree air conditioner codes.

Safety first: unplug the air conditioner (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix Gree H1

Give it several minutes
The indoor fan may stop and you may see steam rising from the outdoor unit. That's normal. Heating resumes when the coil is clear.
Make sure meltwater can drain
Keep the area under the outdoor unit clear of snow and ice so defrost water can run away instead of refreezing.

When to call a technician

If H1 lasts far longer than usual or the outdoor coil stays caked in ice, GREE suggests a sensor or heat exchanger issue. Have a technician look at it.

Parts linked to H1

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Step-by-step guides for this problem

Air ConditionerTroubleshootingHeat Pump Not Heating? Settings, Defrost and Fixes to Try
A heat pump that seems to stop heating is often just in its defrost cycle, which Trane says usually lasts 3 to 5 minutes and can send cool air or steam out of the outdoor unit.
6 min readRead guide

Frequently asked questions

Which Gree models show the H1 code?

Any GREE heat pump in heating mode. GREE lists it as a status code rather than tying it to models.

Can I fix Gree H1 myself?

Usually, yes. Most H1 problems clear with simple checks you can do at home. Start with the first step above: give it several minutes.

Other Gree air conditioner codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked