Valliant AquaPlus VUI 362-7 F24 Error

[ADurr]

Hi all,

I've got a Aquaplus VUI 362-7 and seem to be getting a repeating F24 error, which means heating is stop/start and also i don't seem to get HW on demand, only the quantity pre-heated in the storage tank then it runs cold.

F24 from searching appears to be a multiple list of things to check, but mainly the pump or pump-head.

From anyones experience is this likely the error here? I've had a new PCB in the boiler not long ago, so i'd hope its not that!

Cheers

ADurr

 

[ADurr]

Screenshot 2022-04-26 123040

• ADurr
• 26 Apr 2022

Manual error code, pretty much points at the pump either being shagged or blocked.

 

[CBW]

I wouldn’t be suspecting the pcb. Does it have enough pressure? Are the valves open under the boiler or any other valves shut?

 

[ADurr]

All valves open, tank charged etc. I can only think its the pump