Myson Apollo pump not operating

[engie]

Hi
Hope someone can guide me reference my Myson Apollo 30/50 boiler and pump. Problem started with banging noise from boiler, ascertained that on start up boiler over heating and switching off. Reason for this was the pump not running/auto starting. Checked pump and confirmed it was not seized so replaced with with a new one. This didn't fix problem! Cold last night so wired the pump to run continously. Can anyone let me know why the pump doesn't auto start when boiler kicks in PLEASEEEEEEEE

 

[LUNAT]

HI


posiible loose wire connections
if wired through P.C.B then fault might be with pcb

 

[engie]

Cheers
Checked wiring can't see problem. unsure of location of PCB, will it be within the timer unit ?

 

[heatingman]

Possibly the pump over-run stat, this is inside the boiler combustion chamber so best to get a corgi guy to check it.

 

[namsag]

Really basic fault on an appolo as heating man pump over run stat cost about £20 far cheaper than a pump

 

[engie]

Thanks for the advise will get stat checked out