Ideal Icos

[mfgs]

Went to a boiler breakdown last week on an Icos, boiler making really noud vibrating noise. Condense trap was blocked so took it off and about 3 litres of water came pouring out. Cleaned out the trap, put it back together. All working fine, gave it a safety check and let it run and switched it on and off a few times. All ok. Arranged to go back this week to give it a proper service as I didnt have a gasket kit or the famous earth pins on the van. Got a call today saying the boiler isnt working again and LF is flashing on the display. It will run for a few minutes and then lock out, when reset it will start up and then after a few mins lock out again. Any suggestions on common problems other than electrodes and pcb?

Cheers.

 

[mfgs]

No one had any experience with this LF fault then? I am going tomorrow and want to be armed with as much info as possible and would like to hear other peoples experiences.

 

[diamondgas]

mfgs .. LF alwas occurs for me after washing down the heatexchanger!!! Could be condensation on the flame detection probe or its gooshed!!! Either that or its lead?

 

[mfgs]

Thanks. perhaps the fact it was previously full of condensate could have done a bit of damage to the electrodes. Just seems a bit odd as it only does it after it has been running for a few minutes apparently.

 

[diamondgas]

If the insulation around the probe is damp it could cause issues I guess? May pay to take a probe with you. Once you get the burner out you'll see what condition it's in... 🙂