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Andrew Smith
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 3629
Experience:  Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
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I have an ideal logic combi 24 boiler. It has suddenly gone

Customer Question

I have an ideal logic combi 24 boiler. It has suddenly gone into a fault showing L3 fault code, no flow. I've spoken to ideal and they said it was a transducer fault, I've just changed the flow transducer and it has made no difference?!? Help!!
Submitted: 2 years ago.
Category: UK Plumbing
Expert:  Andrew Smith replied 2 years ago.
When you run the boiler can you hear the pump run? Are you able to check this by removing the centre screw to confirm it is spinning?
Customer: replied 2 years ago.
Yes just done that and pump is spinning. When boiler is reset it goes into L3 fault immediately after the reset countdown.
Expert:  Andrew Smith replied 2 years ago.
Have you had problem prior to this, perhaps intermittently?If not then it is pointing at the boiler flow switch - the boiler does not know the pump is running (even thoug you have checked that it is)
Customer: replied 2 years ago.
No prior problems. Would you suggest replacing the flow switch? it is it possible to link it out as a test? Or test the switch somehow? Thanks
Expert:  Andrew Smith replied 2 years ago.
Yes, if it is a simple two wire connection, then a link wire in the connector would rule this out