Boilermate III - Hot water but NO central heating

[manorboy]

We have a Potterton Suprima 40 boiler with Boilermate III thermal storage. The boiler was locking out 'several times a day' which was pinned down to a faulty PCB and was replaced yesterday. Boiler fires fine now and we're getting scalding hot water but the central heating wont turn ON (Room thermostat set at 24 C, waited nearly 12 hours).

Didnt have this problem before PCB was replaced. Could someone help pls?

 

[corgiman]

stuck CH pump i reckkin

 

[manorboy]

Thank you corgiman.

How do I check this?

 

[gas4you]

PCB change on boiler shouldn't affect anything on the Boilermate.

The pump live connection on the Suprima should not be used with the boilermate.

Get your boilermate MI's out and look through the fault finding section.

 

[manorboy]

Thank you gas4you

The CH is now working but took over 12 hours to switch ON. Not sure why though.

 

[nicknox]

I expect the boiler stat is not turned up high enough. Should be on max.