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Plumberpro
Plumberpro, Plumber
Category: Plumbing
Satisfied Customers: 634
Experience:  Heating and plumbing answers. 20 years experience
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Biasi riva compact M90E Fires up for ch and dhw but cuts

Customer Question

Biasi riva compact M90E
Fires up for ch and dhw but cuts out after a few seconds then the lock out switch flashes red 4 times then it fires up again then cuts out after a few seconds 4 red flashes and just repeats this process ovef and over
So no ch or dhw currently
Do not want to be ripped off by a plumber so need some help please
Submitted: 2 years ago.
Category: Plumbing
Expert:  Plumberpro replied 2 years ago.
Customer:

Hi . it could be a couple of things

Customer:

Knowing the biasi though it sounds like the thermistors( temperature sensors ) have failed .probably the heating one .

Customer:

They are about 30 pounds each and can be tested with a multimeter on ohms

Customer:

Does the ignition fire up for a few seconds?

Customer:

Things to check . does the boiler fire? Are you getting any heat , feel the pipes at the boiler .can you hear sparking, ie trying to light ,should be able to hear this

JACUSTOMER-mfcr1whd- :

Yes ignition fires up for a few seconds

JACUSTOMER-mfcr1whd- :

the radiator pipes gey tepidly warm as its igniting then cuttin out and repeating this process

Customer:

Hi . pretty sure its going to be the thermistors . pretty easy to change once the waters isolated . shouldn't be an expensive job . you could do it yourself

JACUSTOMER-mfcr1whd- :

Ok thats great will try they sell on ebay £6.49 cheers

Customer:

Your welcome

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