Hi There, Got a Sime 100 Format C, been OK for 7 years, now developed a problem, when CH is switched on and after say 5 mins a screeching noise is coming from the boiler, turn on the hot water tap it stops, turn off the hot water tap it restarts screeching but much louder, only way to stop the noise is switch off the boiler and wait 5 mins then go thru the procedure again. Have tried to identify exactly which part of the boiler is making the noise but I`m unable to pin it down. Has anyone experienced something similar or can someone advise of the likely problem.
Noisy Boiler
- Thread starter jjimbo
- Start date
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Is it coming from the top or the bottom of the boiler?
Have held a cardboard tube to my ear other end at various parts of boiler
the noise is loudest at the divertor valve / heat exchanger, have just turned the pump speed down from setting 3 to 2 the boiler is now quiet until the hw is switched on, finding that I can stop it screeching if I turn the cw on and off.
the noise is loudest at the divertor valve / heat exchanger, have just turned the pump speed down from setting 3 to 2 the boiler is now quiet until the hw is switched on, finding that I can stop it screeching if I turn the cw on and off.
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