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I have checked the valve and that appears to operate ok. Also the actuator solenoid works ok aswell.Also no taps left on I have noticed various jumper connections on the PCB is which need to be set for individual boilers is there any chance that they could be wrong and causing the problem?

what could be causing this do you know? Or is it just faulty?

I have an Ideal Isar He35 gas combi boiler fitted. It recently blew the main Pcb which i have had changed and it appears to be working fine however the `t` code now comes on 3 to 4 times every hour. I Know that it is meant to come on periodically to keep the tap water supply hot but i think that...