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Promax combi he plus boiler fitted with cordless room thermostat panel. Batteries removed boiler doesnt fire up - correct as not recieving info from cordless panell BUT on 3 occassions now after being out all day regardless of warm or cold day the C/H has been on an the house is toasty warm-...

Looking for thoughts so i don't get ripped off etc by engineers. Hi all, as per tittle "Condensing combination boiler". Recently the water pressure guage is hovering on green max2 and red3 for excess pressure, our water meter is not spinning so no water is running. 1.open the relief valve drain...