Halstead ace combi HE 24 or 30 - no central heating

[winnitmi]

Hot water seems fine but central heating not working. When heating turned on, C is displayed (but without .) and no sound of boiler attempting to light. No problem with hot water.

Any thoughts v welcome
thanks

 

[Rob Foster]

Hot water seems fine but central heating not working. When heating turned on, C is displayed (but without .) and no sound of boiler attempting to light. No problem with hot water.

Any thoughts v welcome
thanks

not a diy job, check pressure on ch side outside chance it’s down but enough to get Dom hot going .
How old is this lovely peice of engineering ? Rob Foster aka centralheatking