Our latest episode from the boiler studio and Viva Training trainer Roy Fugler looks at how to check a hall effect receiver on a Potterton Assure boiler.
Roy uses a magnet on the receiver to check whether the fault is mechanical or electrical – A simple and quick technique for boiler engineers!
WARNING: This video is for trained, Gas Safe Register Engineers only, never attempt to work on a boiler without the proper qualifications.
How to Check a Hall Effect Receiver
Today we’re going to be looking at today how to test the hall effects receiver on a Potterton Assure which is the same boiler as a Baxi 800, 600, Baxi Assure and the Main Eco Compact which uses the same receiver that a lot of the boiler manufacturers are using and it works on the principle of a magnet.
So I have my trusty magnet here so I can test it.
We’ve had a phone call from Mrs Miggins and there is no hot water. She has turned the tap on and there is no water at all. We know we’ve got the tap symbol on the front of the boiler which normally flashes to indicate that the there is a hot water demand and we’ve turned the tap on and that’s not flashing so we know it’s either a mechanical issue (the turbine inside that hall effects sensor isn’t spinning and because of debris because of failure) or the electronics aren’t picking it up.
The quickest way to test it is to pop the front down, remove the receiver unit and then place the magnet at the side of it. Because this works on the turbine principle it’s looking for a spinning magnet. To simulate this you waggle the magnet up and down next to the receiver.
What you are looking for is that little red light to flicker and if we do it at the right speed the boiler might even fire up so in this case it’s actually operating.
So if we had this situation out on a call where the electronics are working we’re looking at a mechanical problem where we would need to clean or replace the turbine inside.
If we had the situation where the light isn’t flickering, then we are looking at an electronics problem so therefore we’d be replacing this unit.
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