Greenstar 40cdi conventional

[Gas74]

anyone know what it means when there is an L (inverted)flashing in top left and bottom right of display alternating between that and flow temp. Boiler will not fire onto full rate either so poor/ no heating/hw. Can’t find any info on this
Help appreciated.

 

[ShaunCorbs]

Have you just turned the power off ?

 

[Gas74]

Have you just turned the power off ?

No was doing it yesterday.
Hadn’t been serviced for years.
Cleaned heat ex and choked condensate trap
Replaced electrodes and seals.
After siphon mode boiler worked great.
Fan pressure good
Min and max settings good
Just got a call today saying it was doing same again but don’t know what it means can’t find info on it anywhere.

 

[ShaunCorbs]

It's a service reminder then

 

[Gas74]

Won’t get back until tomorrow so trying to get a heads up before I go. Never saw it before on a greenstar and like I said not in book.

 

[Gas74]

It's a service reminder then

No I reset the service reminder. And that’s usually SE
Weird. It won’t fire up to max client says. It almost like siphon mode but a different symbol and won’t come out of it?????? I’ll have a look tomorrow and maybe phone WORCESTER.

 

[ShaunCorbs]

I still think it's siphon fill mode

 

[Vee]

I've had this on exactly that boiler size and model and it turned out to be a PCB fault. It looked like brackets turned through 45degree. Speak to technical support they can take you through a factory reset of the board software which may or may not iron this out, they called it a software glitch initially. Ironically the fan did not run anymore following the fitment of the upgraded replacement PCB. The fan may have been the original cause of the board fault though. Turned out expensive.

 

[Gas74]

I've had this on exactly that boiler size and model and it turned out to be a PCB fault. It looked like brackets turned through 45degree. Speak to technical support they can take you through a factory reset of the board software which may or may not iron this out, they called it a software glitch initially. Ironically the fan did not run anymore following the fitment of the upgraded replacement PCB. The fan may have been the original cause of the board fault though. Turned out expensive.

Thanks I was thinking it might be something like that. Will check it out tomorrow.