glowworm flexicom 30cx boiler - over pressure & drip

[ogbsn]

Hi, after some help with a flexicom 30 CX - 9 Years old.
Pressure slowly creeps up toward 3 bar, followed by a very slow drip.
Plumber has been out & done the follwing:
Represurised expansion vessel
Relpaced plate heat exchanger
confirmed both filling loop valves are passing water.
Plumber now out of ideas - suggests Gloworm expensive call out.

Assume pressured system is leaking into hot water / rad system, pressure release valve letting water out.

Help needed
1. Is this a common fault - any idea what part ?
2. Any better option than Gloworm call out.
3. Some concencus this boiler is of poor quality / not worth the hassle ?
4. Easy plumb in replacement ?

Thanks

 

[centralheatking]

If the filling loops are passing then they should be disconnected.
centralheatking or are they integral on this unit ? but there must be an isolator due to regulations. hmmm back to work chking
sounds like a new exp but just get the gsr to fit an external one
dead cheap ...BES Electric Avenue Brum no doubt more will comment this is a regular one.

 

[Scott_D]

The filling loop is passing or isn’t passing?

 

[SimonG]

Get a better plumber if he's out of ideas.

 

[Stu-B]

If the filling loop valves are passing then shouldn’t your guy have replaced them?

 

[ogbsn]

Thanks for the advice, the boiler is at my mom's house, I've been over after the advice given, ensured the two loop valves were off, slackened the chrome nut on the loop pipe, this started to drip rapidly for a long time when only slightly loose. I guess this means I need two new valves - 0020026411 & 0020026408.
Or is it possible to blank the valve outlets & fit a universal part.

Tried the original plumber...now retired. Is this an easy job ?

Thanks again for the help.

 

[Millsy 82]

As Simon says get a decent engineer in

 

[Stu-B]

I’ve had a few of these passing over the years, cap off and fit a generic filling loop to the pipework below.