Baxi bermuda back boiler problem

[3083sam]

Hi, just went to do a landlords ticket on a property which had baxi bermuda back boiler and fire. did tightness test, flue flow and spillage test etc.. Lit the pilot light and all was fine, then i turned on time clock and boiler fired up, after about 10 secs boiler cut out, gas valve shut off and pilot light went out.. Any ideas????
Thanks

 

[SafeGasInstall]

did you put gas back on ?

 

[3083sam]

Yes and purged through, i tried it a few times and it just kept doing the same

 

[SafeGasInstall]

was it working before you got there ,did you check the pump ?

 

[3083sam]

Yeah was fine, pump was working as well.

 

[SafeGasInstall]

DID you move thermocouple by chance ,you know the gas valve has two open positions did you check that it was on from there ?

 

[3083sam]

Yeah all checked!! Dont know weather to change the pilot assembly and see from there. Not at the property now so will have to wait till tuesday..

 

[SafeGasInstall]

enjoy the weeekend and forget about till next working day

 

[3083sam]

No worries, you 2!!!

 

[rm1]

did you check the working pressure incase the governor is faulty

 

[Billy Bob Bob]

and what burmuda is it if it has a ods may have dirt in the sensing port

 

[SafeGasInstall]

Dan by ODS do you mean oxygen sensing device,(just asking)

 

[REDSAW]

you mean fluff dropped into osd air hole?

 

[Billy Bob Bob]

Dan by ODS do you mean oxygen sensing device,(just asking)

yes,dust dirt in there

 

[Billy Bob Bob]

you mean fluff dropped into osd air hole?

yes quite common if the boilers dirty

 

[gasmarc]

it could be an electrical problem causing the valve to shut off but does not explain the pilot going out , word of warning always remove the gas fire and physically check the heat exchanger is clear as I know this from experience