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Mend DuoHeat 500n Home Heating Systems

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Mend radiator thermostatic stuck
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One radiator in a bedroom is always cold?

One radiator in a bedroom is always cold. It used to work fine. I have tested the thermostatic value and the... [Read more]
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Sabre 29 water pressure drop?

sabre 29 water pressure dropped, how to increase the pressure
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flashing green light near the CH select button new batteries in transmitter
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How do i stop the time from flashing on the Siemens RDJ100RF?

How do i stop the time from flashing on the Siemens RDJ100RF unit
Mend Heating, Home Heating Systems

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i need a new mother board for my flamerite isis fire do you know where i can purchase one
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Mend DuoHeat 500n Heating Sensor Fault

Room temperature sensor fault on a DuoHeat 500n?

My DuoHeat 500n has a "Room temperature sensor fault". Does this mean it needs a new charge module (If I can find one) ?

Jack Roberts
May 2022
DuoHeatDuoHeat 500nHeating, Home Heating SystemsHeating Sensor Fault

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Mend Heating, Home Heating Systems
Free repair help for DuoHeat 500n home heating systems