Can anyone assist? I've been called out to a Keston Celcius 25. Apparently it's been playing up for quite a while.
The boiler ignites and three of the four green LEDs light up OK. As soon as the fourth LED lights up the boiler cuts out. This happens on heat only, on water only and when calling for both.
I've taken the case off and called for heating. Don't know why, but I placed my hand over the air intake pipe that is attached to the fan (this is inside the boiler and not associated with the air intake from outside the property) thus restricting the negative affect. With the intake restricted the boiler then remains in operation.
Any offers?
The boiler ignites and three of the four green LEDs light up OK. As soon as the fourth LED lights up the boiler cuts out. This happens on heat only, on water only and when calling for both.
I've taken the case off and called for heating. Don't know why, but I placed my hand over the air intake pipe that is attached to the fan (this is inside the boiler and not associated with the air intake from outside the property) thus restricting the negative affect. With the intake restricted the boiler then remains in operation.
Any offers?