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- 25 Mar 2006
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boiler installed in a property that had been left empty for 6 month. On swithch on it blew the 2amp fuse on the main pcb. Fault traced to the pump and now replaced. Boiler now fires up ok from both hw and ch call but noisy - ticking/clicking sounds and very low hw flow rate. Any ideas or advice welcome - BTW, the heat exchanger was replaced about 9 months ago (or so I\\\'m told) just in case that may help.
Many thanks
Many thanks