Heating comes on when using hot water.

Hoping someone can help. Since a couple of weeks ago, every time we use the shower the radiators come on - even though the heating isn’t switched on the boilermate 2000.

Coupled with this, for about 3 days last week we had no hot water at all and there was nothing shown on the LED display on the Boilermate, so I thought the PCB had come to the end of its life. However it’s sprung into action again over the last couple of days and we’ve got hot water again - though the issue with the heating coming on still persists!

Can anyone shed any light to what the problem might be? Thanks in advance.

It is the ACB
GT 155 V29

Check all connections though.

Mike

MGC/H2O
Norfolk