Mend > Home Heating Systems

boiler hunting?

My Apollo60Si boiler keeps cutting in and out every very quickly when up to temperature like every 10/20 seconds Ithink it could be the Hi thermostat can anyone confirm this oe do they know what might be wrong

Len
December 2009

Heating, Home Heating Systems Boiler Temperature Confirm

if it works ok with the low stat then you're probably right, if both stats then the pump may be faulty or the pump overrun stat is damaged.

Ian
December 2009

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boiler hunting?

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