Hi, Sabre 24 se compact boiler, heating goes on but cuts out after 20min when rads get very very hot, boiler keeps working if running hot water. Guessing its an overheating related safety cut out.

I have replaced both thermistors
I have removed and cleaned venturi pipes

Anyone know what would be the next best thing to try with this fault?

Appreciated any help given.

Neil., January 2012

Hi Phil,

Thanks for taking time to reply, appreciated.

No other symptons with boiler, works fine apart from cutting out due to the overheating.

Do you think i should try a new pump?

Whats your thoughts on a new high limit thermostat?

Thanks.

Neil, January 2012

Hi, Sounds like there is no pump over run working.. Any other symptoms?

Phil Bowen, January 2012