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Mend Apollo Myson Boiler Room Stat

Boiler trips RCD after about 5mins. ?

Apollo Myson (old), with seperate programmer and room stat. Have tried by-passing programmer - on/off via room stat, which still trips RCD. Could it br the pump which looks fairly new or somethging else perhaps..? cheers in advance.

Pierre
October 2008
Apollo MysonApollo Myson MysonHeating, Home Heating SystemsBoiler Room Stat
I have the same issue at a clients property, anyone know if changing either of these items fixed the problem ?

Isaacerin
August 2010
Pump is faulty

Robert Adam
October 2008
tv supressor or boiler stat.

iain
October 2008

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Apollo Myson Boiler Trips RCD - Help!