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repaired programmer poor soldered joints on cct pcb plus replaced CHzone valve. thanks all for your help & comments

potterton EP6000

have come to the conclusion that its the timer have checked the pcb and found over heating diode due to poor cct joints and a couple of capacitors loose Iwonder if it has damaged a component looks like a new programmer to be bought :cry:

Kevplumb 8) :wink: :wink:

Hi Kevplumb can you enlighten me as to your stock reply "better looking at it than for it" :?

only a guess but it could be a sludge problem ,try putting washing-up liquid into your header tank,drain some of the water off so that it enters the system :idea:

hot water on radiators hot ,two 2port actuators operate when hot water called for I thought only the HW should not the CH does this mean I have a program problem(digital) or a duff actuator.