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Hi, my potterton mf 80 has stopped working, there is a regular ticking noise from behind the control area and the ch and water lights flash alterately in time with the ticking. I had the timer changed a few years ago, could it be a faulty clock in the timer this time. cheers.

Hi, potterton mf 80 will not fire up. history; voltages to pl3 and pl1 intermittant, unknown cause. voltages at pl1-3 return, flow chart points to gas valve, pilot solenoid open circuit (v1) fit new gas valve (vk4100t) Voltages at pl1 pl3 low. pcb inspection, all appears ok. Next morning...