Heat pumps · Error codes · Vokèra
Er35Vokèra · Vokera Aria (R410A, on/off)
Er35 on a Vokèra Vokera Aria: High water temperature (< 60 C as printed)
Short answer
On a Vokèra heat pump, Er35 means: High water temperature (< 60 C as printed). 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: High water temperature (< 60 C as printed).
Likely causes:
- Not stated in table; see manual troubleshooting section 3.16.
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
| Engineer needed? | Yes |
The manual does not say whether the heat pump stops.
What you can check
- Read and note the exact code shown on the controller display.
- Check the heat pump's breaker/isolator at the consumer unit is on.
- Restart once via the controller (OFF then ON) as the manual allows; if the code returns, call an engineer.
What the engineer will check
- Not stated in table; see manual troubleshooting section 3.16.
Sources
- Vokera Aria air to water heat pump - Installation & Servicing Instructions ↗ · 2009 (URL path) · page 29 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026