BoilerFaultCodes
Warmflow Boiler Fault Codes
67 fault codes across 6 Warmflow boiler models — explained in plain English.
Northern Irish manufacturer specialising in oil boilers.
Just want the most common Warmflow problems?
The top 8 faults across the whole Warmflow range — causes, DIY checks, repair costs.
High-severity Warmflow fault codes
E01 E02 E04 E05 E06
Your boiler's burner has stopped working because it cannot light the fuel, meaning your heating and hot water have turned off for safety.
Agentis Internal
Your boiler has overheated, causing a safety switch to trigger and shut down the system to prevent damage.
Agentis Internal
Your boiler has detected that there is not enough water pressure in the system to operate safely, which is often caused by a small leak or after bleeding your radiators.
Agentis Internal
Your boiler has lost its ability to monitor the temperature of the water leaving the unit, meaning it cannot operate safely to provide heating or hot water.
Agentis Internal
Your boiler's hot water sensor has stopped working correctly, which means the system cannot safely monitor the temperature of the water going to your taps.
Agentis Internal
All models
6 Warmflow boiler models
Boiler cover options
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
Approved partner
Get a quote →
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Affiliate links. We may earn a commission at no extra cost to you.