Loss of pressure overnight and as a result boiler shut down. I replaced the pressure relief valve and is getting the same problem next day. When set the pressure to 1 bar again, heating and hot water work fine for the whole. Do appreciate some help here. Thanks.
Hi Youth, Many thanks for the quick response. I did change the Honeywell M/Valve last week. It was working until yesterday. This morning I switch boiler on and light the pilot on with the gas lighter. The burner immediately came on. So look like the PCB is the main culprit for not getting the...
There is no ignition sparks from the electrode. Green lights 'on': boiler, fan & pilot. Overheat & burner 'off' when turn the thermostat contol clockwise. The fan comes on, follow by the pressure switch clicking and the pump running. Changed the motorised valve last week and all was fine until...