Oil boiler cutting out

R

Rhonin

Guest
Hi folks

We have an Riello outdoor oil boiler. We recently got it serviced. However since the service we have had a problem with the boiler. When we switch on the boiler is starts up fine and the rads heat up. However after about 30 minutes it cuts out and the lock out light comes on. After pressing the reset button the burner attempts to start up but then locks out. If I leave it for 20-30 minutes and press the reset button the burner starts up fine again but will cut out after approx 30 minutes and the cycle continues.
We're waiting on the service guy to come back. Any ideas what is causing this?
 
The flexible oil line near the boiler may be twisted and starving the boiler of oil. May just need to be moved around a bit.
 
Faulty boiler thermostat,
Fuel Starvation - oil supply, low level oil in tank, fire valve.
Smokey combustion chamber - photocell is kicking in. Clean combustion chamber
Flueing problem.
Partial Filter blockage - at oil tank and in fuel pump itself
Wrong fuel/air pressure
 
Sounds like fuel starvation. Make sure valve at oil tank is fully open.

A work colleague had a similar problem. Had a number of service people out, bolier stripped a number of times, parts replaced etc.

In the end someone noticed valve was only partially open !!!

-pm
 
that does not sound anything like fuel starvation, your most likely cause is the solenoid has gone faulty, and after heating for about 30mins is going 'open circuit' and may need replacing.

(after your 20/30 minutes it is cooling back down and allowing it to work once again)
 
Turned out to be a faulty control box. New one installed and its working fine again.
 
Unlucky, they don't tend to go very often, and can generally simulate any type of component failure (most common being no spark or solenoid failure)

Glad you got sorted, thanks for letting us know (most don't bother to take the time)
 
DGOBS said:
that does not sound anything like fuel starvation, your most likely cause is the solenoid has gone faulty, and after heating for about 30mins is going 'open circuit' and may need replacing.

(after your 20/30 minutes it is cooling back down and allowing it to work once again)
Click to expand...

I learnt that one the hard way, any installer/repairer should take note of it.

Rhonin said:
Turned out to be a faulty control box. New one installed and its working fine again.
Click to expand...

Very rare for them to fail, I can't remember the last time I changed one.
 
I usually hang onto them off burners being chucked out to save my customers the money!
 
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