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How can I fix my Puma 100e combi boiler from constantly turning on and off?

I have monitored the running of the boiler for over 30 minutes and it fires up and stays on for 30 seconds then shuts down for 30 seconds and then starts up again. It is only affecting the Central heating side and not the hot water demand.

Ian C, March 2009

home Fix label Heating label_important Home Heating Systemsdone

it is a faulty domestic hot water micro switch i have come across this problem many times

stew, March 2009

check the divertor valve run the hot water and see if flow pipe to the central heating gets hot

dave, March 2009

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home label Heating label_important Home Heating Systems

Fix Fault - Heating

home label Heating label_important Home Heating Systems

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home Fix label Heating label_important Home Heating Systems

How can I fix my Puma 100e combi boiler from constantly turning on and off?

I can answer this question...

How can I fix my Puma 100e combi boiler from constantly turning on and off?

I can answer this question ...

How can I fix my Puma 100e combi boiler from constantly turning on and off?

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