No DHW Baxi 105e (not instant)

[ropey]

Hi

This morning the water failed to heat up when I turned on the shower. I've read through the fault finder in the manual and it suggests a faulty PCB.

I just wanted to confirm that this is likely the case by describing what I've done.

1- Hot water led fails to come on
2- Continuity test on the A5 connector pins 5 & 6 cause the boiler to fire (when the hot tap is on), this was done to eliminate the DHW flow microswitch. This heats up the central heating pipe (isn't diverting to the hot water).

Any thoughts/observations would be very much appreciated.

Regards

Mike

 

[clf-gas]

Replace diaphragm in front of DV with service kit.

About £10/12, and half hour of your time.

 

[ropey]

Thanks clf-gas, it was exactly that, the old one had a split.