No Heating or Hot water AlphaCD25C

[MickT01]

My partner has an Alpha CD25C fitted and worked until a couple of weeks ago. Intermittently it will switch off after working for 4-5 days.
When checking the boiler lights A + B flashing red alternately and light D is green. Tried doing a reset and switching off the main power and restarting.
Also it doesnt seem to want to work when doing and override on the programming.
Any clues,

Many Thanks

Mick

 

[Deleted member 120897]

States in the manual a pressure issue, if the pressure is fine, then it could be the pressure switch or the pcb - an engineer would be needed to confirm this.

 

[MickT01]

Thank you, I will pass on the advice to her