❌No heating fault combi boiler❌
Customer called to say the heating wasn’t working but the hot water was fine, they said they had a Worcester Bosch boiler but that’s all they knew…
On arrival the customer showed me how they normally just turn the roomstat up and the heating comes on, after looking in the cupboard I can see it’s a combi boiler with a mechanical plug in programmer and hard wired roomstat…
The first thing I always do is check the controls are calling and see if the boiler fires or even attempts to fire to help locate me to the correct area of fault finding…
The boiler sat doing nothing so I whipped out the breakdown bible to help me diagnose the fault…