Boiler works until casing gets hot, then works for 30 secs every 5 mins. If airtight case is removed, boiler works perfectly. Flue is OK and fan is running.
DONT BE FOOLED INTO THINKING THAT THE CASE IS THE PROBLEM!
WITH THE CASING REMOVED, THE HEAT FROM THE BURNER IS DISSIPATING BEFORE ITS HAD A CHANCE TO HEAT THE WATER!
CHECK FOR.
SLUDGED UP SYSTEM MAYBE!
COULD BE GAS TO WATER HEAT EXCHANGER IS CLOGGED!
FAULTY PUMP!
BYPASS VALVE MAY BE TOO CLOSED!
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by ALDA » Sun Feb 24, 2008 5:39 pm 