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Thanks for that guys

Ravenheat DHW Thermistor what resistance should i have and can I test the boiler with a resistor put in its place if so what rating resistor thanks Chas

Hi tony the engineer replaced the DHW sensor and diagnosed the PCB I replaced the PCB and the three way valve the switch on top of the three way valve seems to be working I take it thats the flow switch if i operate it manually the pump starts up Its the DHW sensor i was wondering about iv...

Hi all I'm having a problem with my raven heat boiler t no hot water CH works fine just no hot water had a engineer look at it he said it was the DHW sensor so got him to replace the sensor that didn't work he said it was the PCB I replaced that no change , the three way valve had a little leak...