my boiler has a piolt light works when i select hot water but fails to work when heating is selected i've checked the thermostat on the wall and electronicaly is seems to be working is there a switch in the boiler to kick start the heating the pump is also ok
My myson apollo 40B had exactly the same symptoms and after replacing the usual suspects...I changed the two way water valve in the airing cupboard (the one that diverts hot water to hot water tank/heating) and it fixed the problem. I think it was stuck. Hope this helps
WALTER ROBSON
December 2008
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