Worcester WRS not lighting up

[ragj195]

Hi

Hot water has been fine all summer. I switched it to "heating and hot water", the heating came on. Turned it all off for a week when I went away. On Saturday I turned it back on and it didn't fire up at all. I've done these checks but now I'm out of ideas.

Pilot light is on
Room thermostat is up and working (checked this with multimeter)
Both two way valves are working and open.
Pump is on and working
Boiler set to constant and heating & hot water

Basically everything seems to be on and working except the boiler which just isn't firing. Looks like I need a heating engineer but thought I would check on here first.

Thanks
Richard

 

[ollski]

Not ever heard of a wrs, anything else to identify the boiler?

 

[ragj195]

Not ever heard of a wrs, anything else to identify the boiler?

I says Worcester but if you google Concorde WRS it's the same boiler.

 

[Agile]

It may be slightly limited what you can do.

But the first is that you are getting a 240v applied to the boiler when the controls are calling for heat. I think the connection into the boiler may be an IEC plug, if so then this has to be pushed fully in.

If the 240v is present then I think it may be a grey round knob on the gas valve. These have to be rotated to the correct position to allow the main burner to fire up.

If no voltage to the boiler the previous circuitry needs to be checked.

If voltage present and knob in the correct position the you will need a gas reg engineer.

Tony

 

[Dan Robinson]

I says Worcester but if you google Concorde WRS it's the same boiler.

Bet it aint.

 

[ragj195]

It may be slightly limited what you can do.

But the first is that you are getting a 240v applied to the boiler when the controls are calling for heat. I think the connection into the boiler may be an IEC plug, if so then this has to be pushed fully in.

If the 240v is present then I think it may be a grey round knob on the gas valve. These have to be rotated to the correct position to allow the main burner to fire up.

If no voltage to the boiler the previous circuitry needs to be checked.

If voltage present and knob in the correct position the you will need a gas reg engineer.

Tony

Thanks Tony

It is an IEC plug. I gave it a push but will check again. The grey knob is on 6 which is the max.

 

[Agile]

No, its the knob on the gas valve which I was referring to.

Its the one pushed when you have to light the pilot light.

Tony

 

[ragj195]

No, its the knob on the gas valve which I was referring to.

Its the one pushed when you have to light the pilot light.

Tony

Ah yes got it. I will double check it. Thanks

 

[DP]

If the 240v is present then I think it may be a grey round knob on the gas valve. These have to be rotated to the correct position to allow the main burner to fire up.

Tony I am gobsmacked that a top 100 engineer would say that. Do you really mean the knob has to be rotated to get V4600 gas valve first stage to open?

 

[ragj195]

Bet it aint.

50 quid?

 

[Dan Robinson]

Picture.

 

[ollski]

50 quid?

I will take some of that!

Check the resistance of the gas valve solenoid