Heat pumps · Error codes · Power World Machinery Equipment Co. Ltd.
Er10Power World Machinery Equipment Co. Ltd. · Power World dkzlrs r32 evi
Er10 on a Power World Machinery Equipment Co. Ltd. Power World dkzlrs r32 evi: Communication failure of frequency conversion module (alarm whencommunication between outer board and drive board isdisconnected)
Short answer
On a Power World Machinery Equipment Co. Ltd. heat pump, Er10 means: Communication failure of frequency conversion module (alarm whencommunication between outer board and drive board isdisconnected). The manual does not say whether the heat pump stops. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Communication failure of frequency conversion module (alarm whencommunication between outer board and drive board isdisconnected).
Part involved: PCB / communication.
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Engineer needed? | Yes |
The manual does not say whether the heat pump stops.
Resetting itself: unknown.
What you can check
- Note the code shown on the controller and the model number on the rating label before contacting your installer.
- Check that the heat pump isolator / consumer-unit breaker is on; do not open any casing.
- A single restart via the controller (off/on) may be tried only if the manual or your installer allows it.
What the engineer will check
- Follow the manufacturer's troubleshooting steps for this code.
- Check the relevant sensor/switch wiring and connectors.
- Measure/replace the component or PCB as indicated.
Who to ask for: electrical.
What you might notice
Sources
- EVI DC Inverter Heat Pump (with WIFI APP) Operating Instruction Manual (R32 EVI full inverter) ↗ · page 41 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026