Pilot Light Worcester 28i jnr

[MissAJ]

omg i need help, it so cold.
My boiler had lost pressure then wouldnt light so i managed to get the pressure up but it still wont light. i press the rest button and it ticks a few times then flashes.

Anyone know why?

 

[mpheating]

if its a fairly new Worcester it wont have a pilot light...

if its a blue light that is flashing, depending on how many/how fast it flashes depends on what fault it is, if you have your manufacturers instructions, go to the back and go through the fault finding.

try turn mains fuse spur off for 30 seconds, then back on, then reset boiler and call for hot water

 

[boilerdoktor]

Poss the low water press switch which you cant do much about, time to call a rgi

 

[MissAJ]

Poss the low water press switch which you cant do much about, time to call a rgi

I was afraid someone would say that! Thanks

 

[MissAJ]

if its a fairly new Worcester it wont have a pilot light...

if its a blue light that is flashing, depending on how many/how fast it flashes depends on what fault it is, if you have your manufacturers instructions, go to the back and go through the fault finding.

try turn mains fuse spur off for 30 seconds, then back on, then reset boiler and call for hot water

Its a red flashing light but only after its tried to light. if i don't prompt it to come on it doest flash. Ive done all the on/off thing.... still nothing. its been off for about 5 mins now, i'll try again then accept defeat!!

I know it doesn't have an old gas flame with a little window, didn't realise it was something different all together!

God, im such a woman!

Thank god for these forums,

 

[Dopeydaz]

Yup get a gas safe engineer, sounds like the pressure switch to me.

 

[Agile]

Sounds like an ignition fault to me !

Tony

 

[Phill Peck]

Funny how the boiler decides the pressure is low after failing to ignite

Possibly not pressure switch

Oh tony beat me to it

 

[Dopeydaz]

Funny how the boiler decides the pressure is low after failing to ignite

Possibly not pressure switch

Oh tony beat me to it

see loads if these at least one pressure switch a week... Spark, spark, spark lockout.

 

[ianmcd]

Im with Daz on this one , the low water contents switch on this boiler interrupts the APS, and shows a lockout code , one of the few boilers that will actually spark when low water content switch is in de-fault mode

 

[Agile]

Yes, but surely if the APS is interrupted then it should not spark?

 

[Dopeydaz]

Yes, but surely if the APS is interrupted then it should not spark?

I go to some that won't reset at all and some that try light then lockout. No rhyme or reason...

 

[Agile]

I agree that Worcester boilers in particular do seem to be particularly prone to unexpected faulty operation.

On one that I went to an open circuit gas valve solenoid caused the PCB to fail. So after fitting the new ( different ) gas valve then I found I was needing a new PCB as well!

 

[boilerdoktor]

I agree that Worcester boilers in particular do seem to be particularly prone to unexpected faulty operation.

On one that I went to an open circuit gas valve solenoid caused the PCB to fail. So after fitting the new ( different ) gas valve then I found I was needing a new PCB as well!

which model was that on tony as a matter of interest
that sounds like poor diagnosis tbh tony. All combi s do not work the same.

the junior will light for a split second then fail if there is a water press problem. it has probably dragged gunk into the microswitch when re filled

 

[Agile]

The problem was on a combi with an ali HE on the right. 35cdi HE ?

The gas valve coil was o/c so no wrong diagnosis there. The PCB was giving a lack of ignition fault alternating with a faulty PCB code. The owner's worker had been fiddling with the controls a lot but that should not fail the PCB!

The LP switch gets filled with dirt because its in a no flow location and so dirt just stays there until it congeals and completely blocks the entry. They often reset after a few hours.

Of course the user should top up the pressure BEFORE it causes the switch to drop out!

Tony