overheating problem on Baxi

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28 Feb 2005
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Have a friend with a problem on a Baxi Solo 3 PFL70.
Overheat light comes on, when reset boiler is Ok again, problem started a few weeks ago and happens about once a week.
Fan replaced about 3 months ago.
Unvented system, name on tank is AIS OSO.

Any thoughts anyone

Thanks
 
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It may be genuinely overheating and only a thermal time recording might show that!

One might ask if the pump over run is correctly connected and operating.

PCB faults often seem to give that result though.

Tony
 
Tony
Thanks for your comments.
If it is genuinely overheating what could cause that?
Also , it could be the stat?
 
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Check for correct by-pass arrangement, it may have been shut off accidentally.


Pump should run on for approx 8 mins after demand has ceased.
 

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