ideal isar L9 problem. surprise, surprise! :(

[baldy874]

It's 12:20. Call a GSR in the morning.

good point! had a chat with my usual GSR guy earlier and he's stumped! tomorrow is another day.

many thanks for all the help guys. 🙂

 

[armourer]

Hope I am not to late for this one.

I have had 2 of these faults this week.
Look at the front of the pump and if it is an MP61 pump they intermittently stick or run slow giving this fault.

I have had a hell of a job tracking it down as the pump does run and Diverter and motor changed.

Try using a screwdriver as a stethoscope on the pump head and you normally hear a ticking noise (impellers catching).

If not the fault in this case I hope it helps someone?

 

[happymoo2007]

your right there the designers who thought of this boiler want stringing up by there balls ive had nowt but trouble with my boiler this year

 

[baldy874]

it was the pump sticking in the end. i took the pump out and fire it up and it span nicely, which is why i ruled it out as a problem!

got it all sorted when my trusty gas man came round the morning after. 🙂

they are indeed a totally sheite boiler and we are now putting a bit of dosh aside to replace with a nice worcester bosch in the spring!

BIG thanks to all the advice and help here. true gents! 🙂

 

[jaguar66]

God these boilers are cak
ive got this problem on an isar he30 3 horizontals im looking at this afternoon before anyone asks yes im gsr and can work on boilers problem is im new to diagnostics yes i have done a course but still greener than th hills. if im successful and it works i will be chuffed gonna disconect the dryfire thermistor for 5 mins if that fails try turning the pump manually if that fails i will ask advice from the wiser heads.

 

[SimonJohns]

God these boilers are cak
ive got this problem on an isar he30 3 horizontals im looking at this afternoon before anyone asks yes im gsr and can work on boilers problem is im new to diagnostics yes i have done a course but still greener than th hills. if im successful and it works i will be chuffed gonna disconect the dryfire thermistor for 5 mins if that fails try turning the pump manually if that fails i will ask advice from the wiser heads.

For the price of a dry fire thermister. Pick one up and keep it to test with.
They can read good when normal. But when heated they can get a bit erratic

 

[jaguar66]

Thanks i will take your advice and pick one up let you know how i get on.

 

[jaguar66]

Hi just an update the dryfire thermistor being disconected got rid of the problem boiler fired and works fine for the time being anyway . When i opened up the case to get to the thermister it was all wet with like a brown sludgy goo round it what is this ???i dried it and plugged it back in and the boiler fired up ok but im not happy with this brown stuff i know the boilers are cak but they should not ooze it. thanks

 

[GrahamM]

You are spot on in your initial description of these.
If wet inside you will have a bit more work to do.
First I would check/clean sump and condensate trap. You will also need check/replace the turret gasket. Most start leaking at some point.
But if brown sludgy, sounds like you better order up a AAV and gasket kit.

Check the burner, earth pins, electrodes while you are at it.

 

[jaguar66]

Thanks for that Graham its the mother in laws boiler so ive got time to tinker with it but thanks for the explanation of what it is.

 

[Backboiler]

Baldy, was it the head only or the whole pump including the body?

 

[Kewat66]

Made a mistake today by attending a breakdown and forgetting to ask on the phone what was the make and model of the boiler!! Ideal Isar!! A small job turns into a real pain of a job. School boy error"

 

[JAH HEATING]

Rip it out an take it the scrap yard