boiler locks out , complete service and parts change

[gogger b]

problem with my oil boiler everything has been change all cleaned out set up but still locks out , if I remove photcell and shine a light on it it runs fine replace photocell and it stops again , new cell and control box, heating engineer is beat now as well

 

[Deleted member 120897]

I’m not an oily, but if it works when you apply light, I’d be looking in that area. Either faulty photo cell or not enough light?

 

[John.g]

Might be seeing a false flame, to test, keep light shining on the removed photocell before trying to fire up, it should lockout and not fire up.
Make of boiler/burner?.

 

[SimonG]

Yep, give us an idea of the boiler and burner.

Need a new boiler man as well if they're stuck with this.

 

[gogger b]

I’m not an oily, but if it works when you apply light, I’d be looking in that area. Either faulty photo cell or not enough light?

new cell fitted and still the same , chamber all cleaned, new nozzle and good spark

 

[SimonG]

What co2 and excess air is it running at?

 

[gogger b]

Yep, give us an idea of the boiler and burner.

Need a new boiler man as well if they're stuck with this.

grant vortex 16/21 riello burner

 

[gogger b]

Might be seeing a false flame, to test, keep light shining on the removed photocell before trying to fire up, it should lockout and not fire up.
Make of boiler/burner?.

cell works exaclty as it should when out but locks out everytime when in position grant vortex 16/21 riello burner

 

[gogger b]

What co2 and excess air is it running at?

cant answer that has boiler man has given up and left

 

[gogger b]

grant vortex 16/21 riello burner

grant helpline say its a combustion issue but when we trick it to go it burns well fires up lovely and runs fine