Hello guys,
My combi bolier isn't working correctly and it is only 17 months old.
When I turn the thermostat up, nothing happens. It only seems to work when I manually turn the selector switch summer/winter to "gas flame" position. Even then it runs for approximately 10 minutes and then cuts out. The fault finding indicator flashes bi-colour orange and this seems to indicate insufficent system pressure. However, the pressure is fine - 1.5 to be exact.
On further inspection, I opened up the front panel to inspect the PCB control board and found some black suity material. It appears that a transistor may have blown. On making a temp circuit to bridge the gap between the transistor points, to test if this is case, the boiler kicks into action.
I have a few questions and hope someone can help.
Have I diagnosed the correct fault?
Do I need to purchase a new PCB board (hope not)?
If I don't need to replace it, can it be soldered?
What caused this to happen to a new boiler?
Cheers,
Big Yin
My combi bolier isn't working correctly and it is only 17 months old.
When I turn the thermostat up, nothing happens. It only seems to work when I manually turn the selector switch summer/winter to "gas flame" position. Even then it runs for approximately 10 minutes and then cuts out. The fault finding indicator flashes bi-colour orange and this seems to indicate insufficent system pressure. However, the pressure is fine - 1.5 to be exact.
On further inspection, I opened up the front panel to inspect the PCB control board and found some black suity material. It appears that a transistor may have blown. On making a temp circuit to bridge the gap between the transistor points, to test if this is case, the boiler kicks into action.
I have a few questions and hope someone can help.
Have I diagnosed the correct fault?
Do I need to purchase a new PCB board (hope not)?
If I don't need to replace it, can it be soldered?
What caused this to happen to a new boiler?
Cheers,
Big Yin