Worcestor Bosch Heatslave lockout problem

[nickedwards]

Gents, I hope someone can offer some assistance!

We have a Worcester Bosch oil heatslave 18/25 in our office, this morning it has decided to lock out. These are the symptoms leading up to the lockout;

The boiler fan runs
it seems to ignite for a few seconds
then it goes out with the fan still running
This goes on for a few times, only ever running for a few seconds
Eventually it locks out

I have checked the oil is there and we have not run out. I removed the flexi hose from the oil pump return and there is plenty of oil there. I checked the flame sensor that is clean. I also took the front off the firebox and hoovered it all out....this was dry, so it seems to me to be a fuel feed problem( I presume the base would be wet if it was an ignition fault). So what do I check now!!!???

Any help very much appreciated

Thanks

 

[spraggo]

Is the oil pump pressure fluctuating, has it been serviced recently and has it had a new nozzle fitted?

spraggo

 

[djsarge1973]

"I have checked the oil is there and we have not run out. I removed the flexi hose from the oil pump return"..
if there is a oil line on the return does that mean that you have 2 oil flexihoses? as this may indicate a "tiger loop", if thats the case it could be a number of things, tiger loop failure, oil pump worn, & although the "light sensor" (photocell) is clean it could be "open circuit" sounds like you need an oftec engineer to investigate,