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M
switch the hot water on via the switch on the boiler and the central heating comes on,
faulty timer?
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M
seems there are quite few sm 500 out there, can anyone shed any light on them
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M
any ideas y i have only luke warm water when burner is on and flames seem ok. cud it be sludge in sec h/e or thermister?
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M
is there such a timer as a switchmaster 500
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M
works fine on chtg yet turn on hot tap and pump runs, diaphragm makes yet no fan or ignition
