ideal icos he24 LA fault code

[sanghera]

ideal icos he24 LA fault code
Hi guys,
well I'm new to this site, and really hoping someone can help me!

My dad who is a pensioner had a ideal icos he24 fitted just over two years ago via warmsure/front? since oct 2010 the stupid thing keeps breaking down. It displays LA fault code everytime which in the manual means an overheating problems. At first it was intermitent, but from DEC it seems to be a weekly occasion. It mainly happens first thing in the morning, but has happened at times during the evening too. In the past month we have had differing engineers out 6 times! None have been very useful. They have changed the switch, bled the radiators three times in two weeks, one asked me what the problem was?, another said our radiators were rusty (all have been brand new 18 months ago, another said it was the pressure, yet the pressure gauage is always between 1.5 -2, so again this cant be the problem. The latest has said we have to watch it?? watch what? apparently watch what is causing the problem, the water or the heating. I explained we have both timed to come on at the same time, to this he said thats fine, just call us out again if it happens. But I KNOW it will happen again, but they cant/or wont fix it. Can anyone help as not only is it annoying, it is also costly as I have to keep taking time off work to stay in and wait all day for them to come out. Some members have already said to get rid, was just wondering if anyone knows whether warmsure would replace it with a more reliable model seeing as they definitely got paid more than the cost of this boiler by the goverrment!
Any help or advice would be most welcome.

 

[buckley plumb]

is it definately the icos a heat only boiler not combi ?is it system boiler or conventional ? check the pump is wired to the boiler for pump over run also check the pump, a faulty pump can cause poor ciculation and over heating.also check the auto bypass is set correctly

ant

 

[sanghera]

it is a combi, howver the serial number sticker that is on the manual gives that icos name. Thanks for all those suggestions, I'll have to get someone in to loook at it as I have no idea what any of those things mean! sorry! I do know though, when it does occur, everything on one side of the pump is hot, and the other is cold. Don't know if that makes things any clearer?

 

[buckley plumb]

if its a combi its an issar .pump can stick on these boilers i would suggest the next engineer checks the pump

ant

 

[BDL]

Hi definetly the pump. LA fault code relates to an overheat situation. I presume it does it on both heating and hot water? Strange though, would normally expect to see an L9 or H9 code as well. They have fairly cheap CP pumps in them, so shouldn't cost too much, just needs the head replacing as opposed to the WHOLE unit.

 

[sanghera]

Well the heating and water is timed to come on both at the same time so its impossible to tell what is causing it. we have ANOTHER man coming on wednesday. Wait to see what this one says/does. Have asked previous engineers to fix/look at the pump, claim they can't until they know its at fault, not sure how they are ever going to get that confirmation until they actually do/change something. I don't know many professionals who rely on a gift from god to give them the answer to their problems.

 

[BDL]

Ahhh, you have an Icos System boiler. Not a combi. No probs. All they need to do is remove the 4 securing nuts from the pump head, remove pump and check the impellor. Some had plastic impellors, and they would normally fail. Otherwise it may be something on the system? This boiler must have a bypass if it's fitted on an s plan system. (Pump overrun). Get them to check? If it is a y plan then all ok. (They will know what I am talking about). Do you have full Trv's? (Thermostats on all radiators?). If so this could causing the problem. Errrm trying to think of anything else? Doubt it's thermister related. Try turning the boiler stat down slightly for me, grey dial on the front of the boiler, turn it down by a quarter and see if this helps.

 

[sanghera]

Hi BDL

They have tried messing with the dials, infact that is all they do, one turns it up, the next turns it down. Nothing helps.

The "senior" (Same engineer came out 4 days prior) has now decided due to the apparent pressure drop (its been on 1.5 all day and since!!!) it is infact a leak in our pipe work in the house that is causing the LA fault! Something they do not cover. Incredulous out and out LIARS!

I am not denying that a leak in the pipework could cause low pressure, but the pressure has been fine, never a problem when the LA fault code is flashing.

I am now in the process of writting letters to their HO, the Govenrment dept that were responsible for the grants and my fathers' MP. I will be getting an independant engineer out if they do not send someone who knows how to fix it and charge then charge them for it.