Pulling my hair out over this one!
Boiler will not start - no voltage to fan. (power light on pcb does come on)I know normally its the pcb but i have tried 3 different ones (2 re-cons and 1 brand new one) still the same fault. Checked both sensors on the boiler and i believe both are OK (show a short across them - NC) When i disconnect one of them (orange leads) it lights up the overheat led on the board which i think is correct.
I forgot to mention that the pump runs when the controller sends the signal to the board which i think is correct.
I have also changed the gas valve and the fan in desperation but not surprisingly this didnt work either (I know that the fan must start before anything else will happen but i was desperate)
Is there anything else which will stop a siganal being sent to the fan?
Boiler will not start - no voltage to fan. (power light on pcb does come on)I know normally its the pcb but i have tried 3 different ones (2 re-cons and 1 brand new one) still the same fault. Checked both sensors on the boiler and i believe both are OK (show a short across them - NC) When i disconnect one of them (orange leads) it lights up the overheat led on the board which i think is correct.
I forgot to mention that the pump runs when the controller sends the signal to the board which i think is correct.
I have also changed the gas valve and the fan in desperation but not surprisingly this didnt work either (I know that the fan must start before anything else will happen but i was desperate)
Is there anything else which will stop a siganal being sent to the fan?