Boiler question

sxturbo said:

I've just re-read the thread and see that the 2nd opinion guy re-pressurised the system and left the heating off.

After leaving it for 24 hours you said the pressure did not drop.

This suggests you don't have a leak in the pipes. The expansion vessel is knackered and needs replacement.

At the moment the boiler is over pressurising when heating is on and opening the pressure relief valve.

This is probably why the old valve that has been replaced was leaking in the first place.

Click to expand...

Thank you. How much does replacing the expansion vessel ( parts & labour ) cost ?
I also have Bosch's option to pay £50 for 6 months or claim against my home insurance.

Go for the bosch option.
It's good value for supply and fit of new EV and you get the added protection of the next component to fail being covered.
Not bad on a 10 year old unit.

As dilalio said

Rang WB and took the D&G £50/month for 6 months plan. Engineer coming on Monday.

Might not need an expansion vessel, might just need pressurising, but the WB engineer will know

WB engineer came. Played around with the boiler and his verdict was you have a leak, a big leak somewhere. Get a track and trace company.

And read post #12 again

Android 07 said:

WB engineer came. Played around with the boiler and his verdict was you have a leak, a big leak somewhere. Get a track and trace company.

Click to expand...

this is in confliction with your earlier post where you said the system was pressurised, the boiler left off other than for hot water and the pressure did not drop.

which suggested there wasn't a leak.

id have thought if it were a big leak it would be quite evident, though i remember a previous thread on here where the leak was actually in the conservatory in the wall behind a skirting board, he had track and trace people round and they never found it, then he got a plumber over and was found within 20 minutes.. when the op put a photo up it was clearly obvious it was leaking there, but the op didnt notice and just put it down to the conservatory being a damp place

Engineer Report

Gas Boiler Actions Taken: Customer Had 3rd Party Engineer Out For Pressure Issues, Introduced Leak Seal Into

System, Pressure Still Dropped, He Then Came Back And Isolated Flow And Return Isolation Valves Under Boiler, That

Was Approx 2 Months Ago, On Arrival Pressure In Boiler Still On 1.5 Bar, Opened Flow And Return Isolation Valves,

Pressure Dropped To Zero, Indicating A Leak On System, Updated Electrodes In Boiler, Checked Expansion Vessel

And For Any Visible Leaks, All Ok. Performance Operation Test Carried Out. Ldf And Gas Sniffer Used, Left Flow And

Return Isolation Valves Shut So Customer Has Hot Water, Reqs 3rd Party Engineer To Return To Trace Leak On

System. Gas Boiler Fault Description: Pressure Issues Other Measurements/Observations - Giusp/Ncs Ar, Internal And

External Flue Not Made Good, Customer Did Not Want Boiler Turned Off, Condensate Pipe N.C.S, Warning Notice

Issued. System Water Related Call, Turbidity Test Result: Pass (Above Line A). Safe Access To Work On Appliance:

Yes. All 26(9) Gsiur Checks Completed: Yes (With Gas Rate Exemption Applied). Other Gas Appliances Encountered:

No. Asoa: On. 1.5.0/Tg


Engineer Measurements

1.5.0/Nch --- Flue Integrity Test: Pass. --- Fan Pressure Test (-Mb): -5.3 --- Standing Gas Pressure

(Mb): 24 --- Gas Meter Pressure On Max Demand (Mb): --- Inlet Gas Pressure On Maximum (Mb): 19.2 Maximum Co2

%: 9.7 --- Maximum Co Ppm: 68 Maximum O2 %: Co/Co2 Ratio (Max): 0.0007 Flue Gas Temperature (Max) ºC: 56.0 ---

Gross Efficiency %: 89 Gas Rate (Max) M³/H: Minimum Co2 %: 8.9 Minimum Co Ppm: Minimum O2 %: --- Cold Water

Temperature ºC: 18.4 --- Hot Water Temperature ºC: 57.4 --- Flow Rate L/Min: 6 --- Tightness Test Procedure To

Igem/Up/1b: N/A --- Gas Meter Size: --- Gas Pipe Diameter: --- Maximum Permissible Drop For Selected Volume (Mb):

--- Existing Installation, Appliances Connected: --- Test Pressure At Start (Mb): --- Test Pressure At Finish (Mb): ---

New Installation Or Carcass Only: --- Test Pressure At Start (Mb): --- Test Pressure At Finish (Mb): --- Measurement

Notes: No Gas Rate Carried Out Due To Covid 19 Health And Safety.


Parts And Services

Quantity Article Number

Set Of Electrodes 1 8-716-121-817

Labour Charge 1 L-ABO-UR

General Repair 1 8-716-119-341

dilalio said:

Go for the bosch option.
It's good value for supply and fit of new EV and you get the added protection of the next component to fail being covered.
Not bad on a 10 year old unit.

Click to expand...

ianmcd said:

And read post #12 again

Click to expand...

sxturbo said:

this is in confliction with your earlier post where you said the system was pressurised, the boiler left off other than for hot water and the pressure did not drop.

which suggested there wasn't a leak.

id have thought if it were a big leak it would be quite evident, though i remember a previous thread on here where the leak was actually in the conservatory in the wall behind a skirting board, he had track and trace people round and they never found it, then he got a plumber over and was found within 20 minutes.. when the op put a photo up it was clearly obvious it was leaking there, but the op didnt notice and just put it down to the conservatory being a damp place

Click to expand...

Copy-pasted engineer's report above.

Better get on your hands and knees, pulling up carpets and floor boards downstairs looking for water.

Android 07 said:

Copy-pasted engineer's report above.

Click to expand...

And?

Rang home insurance and trace and access came and had a look and found a leak.
Trying to ring local plumbers now.

So, I had a plumber come round and he fixed the leak and boiler is now working as normal. Happy days!
He mentioned that whoever had done the joint work had not done it properly. He merely tugged at the pipe and it came off.

I am also delighted at the payment method used. You don't have to run to get cash. You get an invoice by post and simply pay that by card over the phone or do BACS.