Gree Air Conditioner H5 Error Code

Power module (IPM) protection on Gree air conditioners.

May need a pro

The intelligent power module drives the compressor and watches its current and temperature. H5 means it tripped on an over-current or synchronization problem. GREE says service is needed to sort this one out.

Compatible models

GREE inverter mini-splits. GREE's FAQ lists H5 but no specific models.

Also shown as

GREE lists related outdoor power faults including P8 (IPM or PFC module overheating) and U3 (DC bus voltage dropped).

Difficulty

Try the basic checks, but the usual fix is a technician's job.

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 H5

Restart only once
After the 10-minute power-off, try one restart. If H5 comes back, leave the system off.
Clear the outdoor unit
With power off, clean leaves and dirt from the outdoor coil so the compressor isn't working against a choked coil.

When to call a technician

If H5 returns, call a GREE dealer. Diagnosing IPM and compressor faults means working on live high-voltage parts.

Parts linked to H5

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

IPM power module
compressor
outdoor control board

Order parts by your full model number so they fit.

Frequently asked questions

Which Gree models show the H5 code?

GREE inverter mini-splits. GREE's FAQ lists H5 but no specific models.

Can I fix Gree H5 myself?

Only the basic checks. You can safely try the steps above, but H5 usually points to a part or fault that needs a technician.

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