Heat pumps · Error codes · Gree
dUGree · Versati II (R410A)
dU on a Gree Versati II: Pull-out of the gate-controller
Short answer
On a Gree heat pump, dU means: Pull-out of the gate-controller. The manual does not say whether the heat pump stops. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Pull-out of the gate-controller.
Likely causes:
- the gate-controller is pull out.
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Severity | Fault — needs a manual reset once the cause is fixed |
| Engineer needed? | Yes |
The manual does not say whether the heat pump stops.
Resetting itself: no.
Manual reset: It will be cleared after the gate-controller is rewire.
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.
What the engineer will check
- Follow the Gree troubleshooting flowchart for this code in the service manual.
- Follow the manufacturer's troubleshooting flowchart for this code.
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.62 (printed; PDF p.65) · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026