The boiler went off yesterday, and it was leaking water from the seal on the bit of pipe below the auto air vent. This had tracked its way down the innards, but the electrical connections seemed dry
I'd changed this vent about 6 months ago after it dripped water onto the back of the display unit and corroded the connection to the PCB. But this time it was the bit of pipe below this - the seal was hardened rubber and had cracked.
Anyway, the boiler was running without the display unit working for the past few months.
So, I sorted out the seal, but now the boiler wont come on - there is a click from the main PCB when the on/off switch is used. Fuse is OK
And then I noticed dripping from the bottom of the boiler where the HW outlet pipe meets the black casing behind the actuator valve. This stops when I shut off the cold water supply to the boiler. It does not seem like the joint, and I can't see where it is coming from
I cleaned the connector the the display PCB and remade the corroded tracks, to see if the display would come on and give me a fault code. But just two LEDs (one under HW and one under burner) come on dimly.
So does this seem like the main PCB has gone?
What would have caused his drip on the HW side of things - surely this won't be related?
I'd changed this vent about 6 months ago after it dripped water onto the back of the display unit and corroded the connection to the PCB. But this time it was the bit of pipe below this - the seal was hardened rubber and had cracked.
Anyway, the boiler was running without the display unit working for the past few months.
So, I sorted out the seal, but now the boiler wont come on - there is a click from the main PCB when the on/off switch is used. Fuse is OK
And then I noticed dripping from the bottom of the boiler where the HW outlet pipe meets the black casing behind the actuator valve. This stops when I shut off the cold water supply to the boiler. It does not seem like the joint, and I can't see where it is coming from
I cleaned the connector the the display PCB and remade the corroded tracks, to see if the display would come on and give me a fault code. But just two LEDs (one under HW and one under burner) come on dimly.
So does this seem like the main PCB has gone?
What would have caused his drip on the HW side of things - surely this won't be related?

