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I bought a new one

Further to: No LED Light. I have checked both transformer and PCB and they are both fine. Any ideas as to why It won't work.

2 weeks agoI replaced my burnt PCB for a reconditioned one. Today I have lost both CHW and DHW because the mains LED is off. Mains power is on and the Fuse F1 is OK. According to the Fault Finder I should..."remove Plug PL6 from Modulator Board, Are Both Transformer Windings Closed Circuit? If...

My circuit board has caught fire! How easy is to replace? and what could be the cause?

Thanks for your reply. I have replace the DHW Flow switch and the boiler is now able to switch from DHW to CHW without sticking. There is one more thing, (there always is) After closing the DHW tap the boiler pauses for approx. 1 minute then fires again to continue with CHW. Is this normal...

My Puma 80 (perm pilot) pilot light is extinguised when the red LED lights up on the Modulator Board. I have to wait for this light to go out before the boiler can function properly again. This occurs when: I turn off the DHW tap and the light stays on. Room Thermostat is calling for CHW...

Thanks ChrisR! I found, as you had suggested my contacts were mixed-up! The boiler is now OK.

My Potterton Puma 80 (permanent pilot) will not fire because there is a low system pressure light on. The system is not leaking, the pressure gauge is steady on 1.5bar. I have fitted a new 'water pressure switch' but the low system pressure light stays on. :( Can anyone help?