Boiler Keeps going hot and cold

ratrace

 As per the title Our Ideal Logic Boiler whcih is aproxx 5 years old.

The water when you are in the bath keeps going hot and then cold anf then hot again, I had a boiler guy out a few days ago and he suspected that the heat plate exchanger could be partly blocked, so he changed that but the issue is still there

there are no codes on the boiler and the heater are working perfectly its just the hot water

does anyone know what the issue may be.

i dont want to keep calling the guy out just for him to guess what the problem is and just keeps changing parts etc...

could it be a sensor or somthing simple like that

thanks in advance

jefaz07

Could be the Hall effect sensor and/or water turbine starting to play up. 

ratrace

jefaz07 said:

Could be the Hall effect sensor and/or water turbine starting to play up. 

Thanks i thought it wauld have throw up a code at least if it was anything electrical

jefaz07

Doesn’t show any code. The sensor flickers if the turbine is knackered. You can test by holding a fridge magnet or similar against the hall sensor and see what happens. 

ratrace

jefaz07 said:

Doesn’t show any code. The sensor flickers if the turbine is knackered. You can test by holding a fridge magnet or similar against the hall sensor and see what happens. 

I assume this is the correct one see pic

jefaz07

ratrace said:

jefaz07 said:

Doesn’t show any code. The sensor flickers if the turbine is knackered. You can test by holding a fridge magnet or similar against the hall sensor and see what happens. 

I assume this is the correct one see pic

No, That’s a temperature sensor. Or rather the thermistor. 

ratrace

ah ok thanks

ThisIsWeird

ratrace said:

 As per the title Our Ideal Logic Boiler whcih is aproxx 5 years old.

The water when you are in the bath keeps going hot and then cold and then hot again. I had a boiler guy out a few days ago and he suspected that the heat plate exchanger could be partly blocked, so he changed that but the issue is still there.

There are no codes on the boiler and the heater is working perfectly - its just the hot water. Does anyone know what the issue may be?

I dont want to keep calling the guy out just for him to guess what the problem is and just keeps changing parts etc...

Could it be a sensor or somthing simple like that? Thanks in advance

It could be all sorts of things. 

The symptoms - the DHW cycling hot and cold when run for a more than a few minutes - is classic 'blocked P2P exchanger', but the guy should really have confirmed this using other tests, and also have been concerned about sludged system water in a boiler only 5 years old if the P2P had been blocked. Ie, he should ideally have suggested a system clean, so it didn't keep on happening.

Do you have a magnet filter fitted? I think you should have, in a 5-year-old boiler. If you do, did he check this for sludgy evidence?

Since the issue still remains, I trust he didn't charge you full whack for the original non-'repair'?

What could it be? No idea. But possibilities include a failed/oversensitive flow 'stat from the main exchanger, a sticky diverter valve that doesn't switch cleanly between DHW and CH, or, I don't know.

So, you either get the cove back to actually fix your boiler, or you call Ideal for a fixed-price repair. I understand that Ideal are pretty good at customer services, and will engage nicely with customers (that's what I've heard, and I hope it's still true.)

If you get Ideal out, and the issue clearly never was the P2P, then you ask the original cove to refund the vast proportion of his bill. 

Or you small claims him.

But, really, you should give him a chance to fix it properly first.

(Do you have LegProt on your house insurance?)

FreeBear

ratrace said:

 As per the title Our Ideal Logic Boiler which is aprox 5 years old.

Is it still under warranty ?

If it is, give Ideal a call and get them to repair.

ratrace

FreeBear said:

ratrace said:

 As per the title Our Ideal Logic Boiler which is aprox 5 years old.

Is it still under warranty ?

If it is, give Ideal a call and get them to repair.

No it just ended in april boiler was installed 04/2019 and came with 5 years warrenty

Yes i will call them and get someone out

thanks

ThisIsWeird

If a part has failed in only 5ish years for no good or obvious reason, then it is reasonable to assume it was inherently faulty. If you make a fuss, you can almost certainly oblige Ideal to fix it - Consumer Rights Act and all that malarkey.

You may need to pay initially - 'under protest' - but a quick letter backed by your LegPro is likely to get results.

But first try the gently approach, explaining it's only just OOG, and hopefully Ideal will respond in the manner I've heard they are good at.