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saunier duval enviro plus f5 overheat cut off thermistor

L

loafer

Joined
16 Feb 2006
Messages
237
Reaction score
7
Location
Sheffield
Country
United Kingdom
Why is this boiler indicating f5 overheat cut off thermistor fault when the fan is running a ok but the ignition fails? It happens when heating is off but when hot tap opens. It happens when heating is set to run at the room stat and no hot water is being drawn off, Pump? It gets mad hot almost immediately!!! :cry:

Perplexed. :?:
 
Could be a pump issue. But no matter it requires an RGI to sort it out for you.
 

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