Baxi Solo 3 - Boiler cuts out when I turn Hot Water on

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3 Mar 2009
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Location
Berkshire
Country
United Kingdom
I have a Baxi Solo 3 60 PF, and it has developed a problem that when the hot water is turned on, the boiler goes out and stays out. If I select just Central Heating on the control panel it works fine. But when Hot Water only, and Hot Water and Heating is selected, the boiler doesn't start.

We've had an engineer in, and so far they have replced the pump and the 3 way valve (at great expense!) but still no change.

Any suggestions why it is behaving like this?

Thanks
 
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Faulty cylinder stat or programmer

One things for sure, you can eliminate the boiler
 
Cylinder stat '1' and '2' the wrong way round? '1' from the cyl stat should go with orange of 3 port, hw on and boiler switch line. 2 from cyl stat should go with grey of 3 port and hw off from programmer.
 
Turns out it was the wiring to the thermostat - one of the wires had come loose.
 
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Perhaps the firm that charged you for their incompetence will refund you your money :rolleyes:

Why on earth would a so called 'professional' diagnose a pump fault, when the pump is used for the ch as well and this is working :mad:
 
Perhaps the firm that charged you for their incompetence will refund you your money :rolleyes:

Why on earth would a so called 'professional' diagnose a pump fault, when the pump is used for the ch as well and this is working :mad:

Good question - the pump was quite old and corroded, and we were getting a lot of noise in the system, so it did need changing, but as you say, it couldn't have been the source of our immediate problem :(
 

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