IDEAL C80FF Combi BOILER Problem!

[Ozzy123]

After varying periods of time, it just cuts out!The blummin light comes on (neon lockout) and one has to push the light / button for it to work again.

Recently this seems to be getting worse, especially through the night (as the wife insists I must switch it on!!)

Joking aside, Initially, it was fine-ish;
..the neon L/O light came on, we poked it, it worked again until the next time (whenever that may be!)

- but now it seems to have affected the water temp as it keeps going hot cold hot cold...etc. It randomly goes off / trips / locks-out and is soooo annoying! Even after pushing the light/ button, it takes a while for her to start up...then all of a sudden goes off again without tripping then starts up herself!!!

PLEASE CAN SOMEONE HELP????????????????????!!!!!!!!!!!!!!!!!!!!!

I have read many postings here and it seems there is a lot of expertise here .......come-on people I need YOU!

Thanking you deeply in advance (cos its blummin freezin...) x

 

[Agile]

The hot/cold hot water may be a blocked plate heat exchanger. You can search on here for further information.

The red lockout light is going to be a combustion related matter and probably arises because the boiler has not been serviced. Now its classed as a fault which will need a competent CORGI to deal with it.

Tony

 

[Ozzy123]

Tony,

Thank you for your prompt response and also for sharing your expertise.

I wonder what would this type repair cost? I had it serviced 3 - 4 years ago.

Call me thick but I am struggling to even log back in to this website let alone search for a blocked plate heat exchanger!!!!

But seriously Tony thank you for responding, God Bless mate.

 

[Agile]

In our local area in London we would charge £136 to fit a recon plate HE and service the boiler.

The combustion fault we would probably fix it free or for an extra £4 IF its what I might expect but it could be caused by several things!

Its recommended that boilers are serviced every year!

Tony

 

[hect]

If PHEX blocked - then what about flow switches poss been blocked??

Also - if there is an issue with sludge in the system, then poor circulation can cause to lock out on overheat....

 

[Garfeild]

The red light is an ignition lock out,not an overheat lock out

 

[hect]

Which is in series from CH flow switch.................................

THEREFORE can be flow switch issue

 

[Agile]

In this case he said the FIRST problem was the red light. He also implies it locks out during the night on CH and therefore NOT on DHW demand!

I would therefore conclude that it is an ignition problem.

The blocked HEX is a recent fault.

So he says!

Tony

 

[hect]

Like I said - pcb logic then ign board has reset mech and ch flow switch before that from main board - so ch flow switch could be issue, and he then states sludge in PHEX - so in my eyes there is a system water quality issue that is more than likely affecting both modes....

 

[Agile]

If the system flow switch does not operate the boiler sits there without displaying anything at all!

I was with one tonight!

Tony

 

[hect]

Voltage needs checking at ign pcb from main board then.......

And continuity through reset mech....