Hi, I have one of these and following the fault finding flowchart, I think the modulation board needs replacing (no leds on, 240v present on board, transformer does not have 240v supply but when it does, returns 24vDC across the 2 yellow wires). However, since I have been investigating the problem, I have noticed that the diverter valve is dripping water near the wax capsule head. Does anyone know if a dead boiler will cause this to happen or is it purely coincidental that 2 parts have failed at almost the same time. BTW, I don't think the dripping water ended up on the modulation board so did not cause it to fail. Many thanks for all replies.
Potterton Puma 80e
- Thread starter awksed
- Start date
Yes, this one did about 6 years ago almost to the day, it must have a built in calendar. Resistor R1 went, I resoldered and it lasted until now. This time, resoldering doesn't seem to have made a difference. The water is coming out of the little hole (holes?) in the diverter valve. What are these holes for? Also noticed a dribble coming from the pressure gauge as well. The pressure in the system is only about 0.5 bar at the moment. Thanks in advance.
I changed the pcb and the thing works like a dream now. Its an issue 5 board, nice thick "legs" for the 2 problem resistors. Also noticed that the time between gas on and ignition is a lot smaller so it doesn't "whoomph" like it used to. The diverter valve still leaks so its obviously coincidence. Hope all of this helps someone.
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