Worcester 24i junior greenstar

[allwright]

Called to this one today. Fan and pump running then fault code.
Blue light is:
Slow flash (normally off, flashes on) reset button
flashing and then Ignition lockout.
Would love to know best way of testing electrodes and which pins on the gas valve you test? Or what else can cause this problem. Cheers guys

 

[dancinplumba]

what about reading the mi's fault finding if you have a copy or online 🙂

 

[SilentMike]

what have you checked so far?

 

[R1CKY]

Condensate trap would be my first port of call.

Bit of a crude way of checking, but if you have a gas sniffer, remove the FGA point on the flue to check whether gas is being let through to the burner.

 

[diamondgas]

Blue flashy light .....hmmmmmmmmmmm! Could be a multitude of possibilities allwright 🙂 Let us know what you've done, as mentioned, then that'd help reduce the possibilities yeh?

 

[arran197]

Gas valves are prone to failing on these if it's the old style with the connections at the back (can't remember which brand is the old one now). Whip off the bottom cover on the electrical section, disconnect the multi block connector and check the resistance between the 2 cables of each connector. You should find one is ~180 ohms and the other is double that, so ~360 ohms. If you get OL then on of the coils on your gas valve is shot. You can also check it by connecting you manometer on the inlet and seeing if there is any drop on ignition.