GAS DRIER.

[jackfrosted]

I have a Crosslee white knight gas drier , model bg442, the drive belt snapped and i replaced it with an Oem one, but now the drier ignites and runs ok for thirty seconds but then the gas valve shuts off.
I,m thinking its the overheat thermostat but am unable to find where it is,
Can anyone help please ?.
Thanks.

 

[jackfrosted]

This happened a while ago and have now replaced the thermocouple and the exhaust probe, i guessed that if the family kept trying to get it to work the burner would have overheated possibly taking out the T/C and the flame failure probe.
Like in the first post it will ignite but now does not stay lit for more than a few seconds.

Any help please.

 

[Terrywookfit]

Not familiar with this model if it has a thermocouple!

Most have full sequence controls.

Is the fan intact on motor shaft, (Does it actually blow through the vent) ?

 

[jackfrosted]

Yes blows ok, goes into ignition sequence, lights hessitantly and then gas valve (solenoid coil ?) shuts down.
I have two spare solenoid coils off a m8 and have tried by substitution but no joy.

 

[Terrywookfit]

Does it or does it not have a thermocouple ?

 

[jackfrosted]

Yes it has a thermocouple as supplied by Crosslee, the manufacturers, by post.

 

[Terrywookfit]

Sorry can't help you. I have only worked on models with flame rectification probes !!

 

[jackfrosted]

Thanks for trying Terry .

 

[WDIK]

is this the one?
http://www.gastumbledryers.co.uk/downloads/A4 57045 WhiteKnight.pdf

 

[Terrywookfit]

Nice one Whatdo I know.

I now know, how they work

 

[WDIK]

my pleasure.
looks like the ionisation current is breaking down

 

[jackfrosted]

yes thats the dryer , so where next lads ?

 

[WDIK]

yellow pages to call a registered gas engineer its not a diy job

 

[jackfrosted]

I have followed the fault finding schematics as supplied by Crosslee and have (under there recommendation ) replaced the T/C and the FFE.
I am retired now lads, previously i was C.O.R.G.I registered ( 19786 )all i am trying to achieve here is some pointers , please, i'm not joe blogs Diyer.

 

[WDIK]

the answer is there if you follow it

looks like the ionisation current is breaking down

the TOC [thermal overload cut out]
cant have operated because it starts as you say for 30sec, if the toc had gone it wouldnt.