BoilerFaultCodes
Dimplex Boiler Fault Codes
38 fault codes across 3 Dimplex boiler models — explained in plain English.
Glen Dimplex gas condensing boilers.
Dimplex fault codes on this site
We document 38 fault codes across 3 Dimplex models, covering 33 distinct codes. Dimplex boilers use plain numeric codes such as 1, 2, 3. Codes for 3 of these models are taken directly from the manufacturer's own service or installation manual. Dimplex is a smaller name in the UK market, and if you own one this is likely one of the few places its fault codes are collected in one place.
Models covered: Combi 38, OV 32, System 30.
Just want the most common Dimplex problems?
The top 8 faults across the whole Dimplex range — causes, DIY checks, repair costs.
High-severity Dimplex fault codes
No light display when tap on 1 2 3 4
Your boiler is not detecting when you turn on the hot tap, so it isn't firing up to heat the water.
Combi 38
Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
OV 32
Your boiler is failing to stay lit because its internal sensors are detecting an unusual temperature difference, causing it to shut down for safety.
OV 32
Your boiler is failing to light the gas flame or keep it burning, which has caused the system to shut down for safety.
OV 32
Your boiler has switched itself off because its internal exhaust gases have reached an unsafely high temperature.
OV 32
All models
3 Dimplex boiler models
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