I have fitted a brandnew transformer in airing cupboard. The 3A fuse in the socket is fine and the socket connection is good. The transformer is warm but still the output wire from transformer is not showing live connection. I tested with tester. Do you think there is problem with transformer.
This fault could be something very simple.Can you locate the TRANSFORMER,this is a small black box with two wires going into it (one white,one black).Most likely to be in the loft space or in the airing cupboard.
The black cable will lead to a plug or electrical spur,there should be a 3 AMP FUSE fitted,if this has blown it will cause this type of problem.Simply replace the fuse and you should have some response.
If the fuse is good the transformer will be warm to touch,if it is cold the transformer is at fault and will need replacing.
If the tramsformer is warm,the internal Microswitch Loom inside the Aqaustream will need replacing.This item accepts the power from the transformer and sends it to your pump.
Aqualisa can offer spares for Aquastreams made from 1997 onwards.