alpha ocean no hot water

[61939]

can anyone help with any simple checks (I am not an engineer but an intelligent DIY'er) that I can make before calling in an engineer.
my alpha ocean 240E will not supply hot water - the central heating is working fine - the selection switch is set to both central heating and hot water supply and the temperature switch is set to mid way.

 

[45yearsagasman]

You need to remove the white front case and drop down the controls cover and check that the microswitch (bottom LHS ) is operating.Turn on hot tap and see if the push rod is moving and closing the switch.If not then suspect the diaphragm.

 

[61939]

to 45yearsagasman
many thanks for your quick and straight forward answer - I will take a look at this micro switch