Heat pumps · Error codes · Gree
E5Gree · Versati II (R410A)
E5 on a Gree Versati II: Overload protection of compressor or driver error
Short answer
On a Gree heat pump, E5 means: Overload protection of compressor or driver error. The heat pump stops until the fault clears or is reset. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Overload protection of compressor or driver error.
Part involved: compressor, inverter/driver PCB, power supply.
Likely causes:
- It is the compressor overload switch error or the compressor drive protection, and please see the indicating lamp on the main board of the outdoor unit or the 88 nixie tube for the protection code.
Is it safe?
| Does the heat pump stop? | Yes |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
| Engineer needed? | Yes |
The heat pump stops until the fault clears or is reset.
Resetting itself: yes.
What you can check
- Note the code shown on the controller and the unit model numbers (on the rating plate label) before contacting your installer.
- Check the heat pump's breaker/isolator at the consumer unit is on; do not open any casing.
- If the breaker or RCD trips repeatedly, leave the heat pump switched off and call an engineer; do not keep resetting it.
What the engineer will check
- Follow the Gree troubleshooting flowchart for this code in the service manual.
- Check supply voltage and phase balance.
- Check compressor windings and inverter/driver PCB per flowchart.
- Check heat-sink cooling and connections.
Who to ask for: Heat pump engineer.
Certification: Heat pump installer competence; F-gas / flammable-refrigerant (R290/R32) handling competence for any refrigerant-circuit work.
What you might notice
Sources
- Air to Water Heat Pump Service Manual Versati II (T1/R410A/50Hz, GC201308-) ↗ · GC201308 · page p.60 (printed; PDF p.63) · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026