weird oil burner problem

bigbaz

my outside riello oilburner has developed a problem,it started with the pump goin due to water getting in the line,so i got a new pump,cleaned and bled the system of any impurities,stuck on the new pump,it now fires and heats the rads

until it knocks itself off,then it will cycle but wont fire,i can go out and reset it,it wont fire,when the rads cool,it fires again when i reset it first time,anyone any ideas?

jimf

rads cooling before pump fires cant see the connection

what exactly did you do to clear the impurities from the system

you may have an issue with the new pump again if you didn't remove all the water from the tank as well as the line and the filter did you fit a new nozzle as well

bigbaz

cleaned the tank pumped out the line going to the boiler,filled with new oil,only thing i can think of is the pump isnt working right,perhaps the solenoid valve isnt working properly,but 100 per cent of the time the boiler fires when cold,and when warm it wont 100 per cent of the time,it is weird but i can only draw the conclusion that the pump is faulty,or somehow got **** in it

Tom44

As Jim said.

Did you remove "ALL THE WATER" from the oil tank.
Not just draining oil line till it ran clear. ?

c ashelmore

faulty photocell may be affected by heat from boiler

jimf

when you try to fire the burner does it sound normal or is it just a low hum

without the basic test equipment it will be hard to know exactly where the issue lies

bigbaz

Tom44 wrote: »

As Jim said.

Did you remove "ALL THE WATER" from the oil tank.
Not just draining oil line till it ran clear. ?

yeah tank emptied,cleaned out,then the oil supply line drained also,if its the pump fair enough,just seems strange that it will run every time from cold but wont relight,you would imagine the pump would just crap out intermittently regardless of temperature!

bigbaz

jimf wrote: »

when you try to fire the burner does it sound normal or is it just a low hum

without the basic test equipment it will be hard to know exactly where the issue lies

na its all normal,no weird noises or low hum etc

bigbaz

c ashelmore wrote: »

faulty photocell may be affected by heat from boiler

how would that work? just the heat obsuring the lens of the photocell with soot or something?

DGOBS

Sounds like a solenoid coil issue.

Which riello burner do you have? (G series or RDB)

Thing to check:
When the burner tries to fire again but locks out, power off and take the burner out, see if the blast tube is wet or dry
If dry, sounds like a solenoid issue.

bigbaz

DGOBS wrote: »

Sounds like a solenoid coil issue.

Which riello burner do you have? (G series or RDB)

Thing to check:
When the burner tries to fire again but locks out, power off and take the burner out, see if the blast tube is wet or dry
If dry, sounds like a solenoid issue.

its dry alright,is there a way to check the solenoid coil for sure?

agusta

bigbaz wrote: »

its dry alright,is there a way to check the solenoid coil for sure?

Yes,what is the burner type

bigbaz

agusta wrote: »

Yes,what is the burner type

Its an rdb,thanks for your help so far much appreciated

agusta

it should read 100 ohms on a multimeter

agusta

bigbaz wrote: »

yeah tank emptied,cleaned out,then the oil supply line drained also,if its the pump fair enough,just seems strange that it will run every time from cold but wont relight,you would imagine the pump would just crap out intermittently regardless of temperature!

When you mean the burner wont relight,does the burner go to lockout and you have to press the reset button again?,i cant quite picture what is happeming

jimf

agusta wrote: »

When you mean the burner wont relight,does the burner go to lockout and you have to press the reset button again?,i cant quite picture what is happeming

maybe he could put up a video of it running for u agusta

only this time will you turn up the volume on your laptop :D

agusta

jimf wrote: »

maybe he could put up a video of it running for u agusta

only this time will you turn up the volume on your laptop :D

Im thinking about leaving boards,everyone is at me!

agusta

And il come back under a new name, maybe dec-scudo or something

jimf

agusta wrote: »

Im thinking about leaving boards,everyone is at me!

stop making promises u have no intention of keeping :P:P

even if you did u would miss us too much

what would you come back as tom 45 maybe :P

c ashelmore

bigbaz wrote: »

how would that work? just the heat obsuring the lens of the photocell with soot or something?

It's only a guess but I had a Danfoss photocell once where the current through it went sky high when it got hot,but would start normally. For a few euro it's worth a try.Good luck.

bigbaz

agusta wrote: »

When you mean the burner wont relight,does the burner go to lockout and you have to press the reset button again?,i cant quite picture what is happeming

Yeah burner goes to lockout after it warms the rads to temperature,so,press red reset when cold,burner fires until rads at whatever temperature you set,knocks off,attempts to fire again when rads cool a bit,wont and goes to lockout,wont fire again until rads are cool

agusta

sounds like the capacitor

jimf

agusta wrote: »

sounds like the capacitor

was my first though as well but he said the fan fires up to full revs with no hum or stalling

Wearb

As Dgobs and others already said. A new coil is worth a try if he hasn't a way of testing it.