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My 105HE stopped working on both DHW & CH. Anyhow, after info gained from this site, I removed the front half of the divertor valve and found it to be seized. I cleaned it up and renewed the diaphragm and now the HW is working brilliant. When I place a call for CH, the pump starts up but the...

I've just checked, it is the one at the front. I hadn't noticed the other one.

I have now found that if I turn the hot water tap on and then manually flick the micro-switch on the three way diverter valve, the boiler fires up and I get hot water (I have to do this each time I want hot water). When I put a call for central heating and keep the same switch pressed, the...

My Baxi 105HE suddenly stopped working. I have power to the unit and and the only light is the Green standby light. I have drained the radiators and re-pressurised the system to 1 bar. I have tried to RESET when I have turned the hot-water tap on and again when I have put a call for central...