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Mend Ideal M30100 Heating Radiators Domestic

whats wrong with my isar m30100?

with domestic only switched on radiators get hot too need to switch some radiators of in order to wash up or have a bath changed pcb checked diverter valve and motor head they seem ok can you help me PLEASE ?

peter
July 2010
Diverter valve cartridge is all it will be.

To prove it, turn off the isolation valve on the flow pipe of the CH (Temporary fix)

Simples

Carefree
July 2010

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