Servowarm Boiler Fault Codes

10 fault codes across 1 Servowarm boiler models — explained in plain English.

Servowarm domestic boilers (Malvern-built).

10 fault codes
1 models documented
0 currently sold
1 legacy models
Just want the most common Servowarm problems?
The top 8 faults across the whole Servowarm range — causes, DIY checks, repair costs.
Most serious

High-severity Servowarm fault codes

10
Your boiler is struggling to accurately measure its own temperature, likely due to a faulty sensor or a loose wire that is causing it to stop operating to stay safe.
Elite HE
 20
Your boiler is struggling to read the temperature correctly because a sensor is sending an invalid signal, causing the system to stop heating for safety reasons.
Elite HE
 30
Your boiler has detected an issue with a temperature sensor, which is preventing it from safely heating your home.
Elite HE
 40
Your boiler has detected a faulty temperature reading from a sensor, which is preventing it from heating your home safely.
Elite HE
 50
Your boiler has detected an issue with a sensor reading, which has caused it to stop working to ensure it remains safe.
Elite HE
All models

1 Servowarm boiler models

Elite HE
Combi Discontinued
10 fault codes · 1995 onwards
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