Ideal Isar HE24

[potter1]

Hey,

I've got a 2 year old Ideal Isar HE24 boiler.

Recently it started to go off (usually during the night). It would display the fault code FL. normally after pressing the reset button there would be a bang and it would start working again...until today..

It goes through a sequence of trying to start but just as you expect it to fire up the fault code flashes up. I've checked the Condensate trap and associated pipework and its all clear. There is no sign of pressure a gauge on the gas side so i'm unable to check inlet pressure... I've checked voltage at the gas control valve which is reading 0, according to the fault finding guide, if the continuity is ok then the pcb is at fault?

Has anybody experienced a similar problem?

I dont want to pay for a new pcb to find its something else.

Any help/advise or shared experiences is appreciated.

Thanks in advance

 

[Rob]

I dont know but thats an awful boiler and considering most faults are down to the PCB you may be better off getting British Gas out on a fixed price.

 

[fitz1]

does it try to light with the spark

 

[Garfeild]

Has it got a black or orange PCB fitted? Before fitting a new PCB,check for voltage on neutral,ideally 0,check the two outside pins on fan connector for open circuit,if it is,it will take out new PCB straight away.

 

[snb]

use the fault finding chart frame 78

L F if usually due to ignition

check you have 200v at the gas valve whilst it's on the ignition sequence. if not it's probably the pcb.

 

[potter1]

Hey

thanks for the replies!

Previously whilst checking the voltage at the gas valve, I wasn't doing it during the ignition sequence (doh!).... thanks snb...

After I checked the voltage and found I had a stready 200vdc I decided to let the boiler continue through its sequence and now it works!!

I'm not sure what has changed, since I last tested it I removed the pcb and put it back (faulty connection?)

Thanks again for your help, no doubt i'll be back with more isar problems....

 

[corgiman]

when was the last time you had it properly serviced

LF can be caused by blocked condensate traps.

 

[potter1]

when was the last time you had it properly serviced

LF can be caused by blocked condensate traps.

I haven't...

Although after this episode I'm going to call around next week and arrange a service..

 

[markymark123]

Try the electrode mate I have had loads of these bend and it causes the boiler to ignite with a bang and lock out L-F.

 

[Agile]

If it stopped working and tyhen later would work then i would be suspecting a blocked condensate trap/drain.

Easy enough to test by disconnecting the connection to the trap.

Tony

 

[heatingman]

remove the syphon trap, its prob full of debris if the boilers not been serviced for years.

 

[corgiman]

helll of an echo in here today lads

 

[sooey]

Don't know about that but I reckon it's probably the condensate trap blocked or something.

 

[gas4you]

Or the drain that it runs into, to, to , to, to, to, to.

(You're right Matt, theres is an echo in here today )