I was called up last week to look at a fault on this combi boiler. I don't usually do repairs but the woman said she had fallen out with the original installer and she was desperate to get it fixed.
I went to have a look and found this problem. If the heating is off and you turn on the tap the boiler doesn't fire up. The divertor does move. When the roomstat is turned up then the boiler fires and we get hot water.
So Im thinking the fact that in hot water mode its not firing up means its not getting the call for heat. Im assuming either the divertor microswitch or the PCB is faulty. She told me the PCB was replaced last year....
The boiler is listed as G.C No 47 555 03 http://www.warmworld.co.uk/boiler-manuals/Warmworld Combination Boiler.pdf
I went to have a look and found this problem. If the heating is off and you turn on the tap the boiler doesn't fire up. The divertor does move. When the roomstat is turned up then the boiler fires and we get hot water.
So Im thinking the fact that in hot water mode its not firing up means its not getting the call for heat. Im assuming either the divertor microswitch or the PCB is faulty. She told me the PCB was replaced last year....
The boiler is listed as G.C No 47 555 03 http://www.warmworld.co.uk/boiler-manuals/Warmworld Combination Boiler.pdf