Glow Worm 35ci - Pressure problems

[Darren42]

Glow Worm 35ci Pressure problems

Evening all, I have just replaced the PRV, charged the system to 1 bar, turned on the heating - Water discharge and a pressure of 2.7 bar when I turned the heating off. The pressure then dropped to 0.6 bar. The temperature was reading 65 degrees C.

Is temperature a related issue or has anybody any other reason for the discharge with new valve fitted ? Any thoughts would be gratfully appreciated.

Thanks
Darren.

Hi folks,

Thanks for your questions and comments, I changed the PRV because it was constantly discharging, I am not clear about the expansion vessel issue, however will investigate further.

Re; Good or bad boiler; up until this point it has done what it said on the tin (installed 2004).

Once again thanks for the dialogue.

Darren.

 

[GPlumb]

Is the expansion vessel ok?

Why did you change the PRV?

 

[Gasguru]

Read the FAQs on expansion vessel re-charging but it is very likley the vessel hose is blocked...another common design fault on this horrible boiler (actually a Saunier Duval).

 

[Deleted member 105431]

you may have a kinked or blocked expansion vessel hose (silver braided). these can be removed and unblocked but more often just altering the radius of the bend by twisting it will cure the problem. These are good boilers despite what gasguru says and if looked after by a glow worm themselves very very reliable. Glow worm do fixed cost repairs and maintenance that can prove good value.

 

[Gasguru]

DM stop pushing Glowworms...you're the only one that rates them.

 

[Deleted member 105431]

DM stop pushing Glowworms...you're the only one that rates them.

which? magazine rates the ultracom best buy actually. they sell very well too and are well priced imho.

 

[Darren42]

Is the expansion vessel ok?

Why did you change the PRV?

Hi Graham

Because the system was discharging on a daily basis, more often than not during the am heating cycle.

Thanks
Darren

 

[Darren42]

Read the FAQs on expansion vessel re-charging but it is very likley the vessel hose is blocked...another common design fault on this horrible boiler (actually a Saunier Duval).

Hi Gasguru,

Thanks for your comments, there is not a lot of detail about the
expansion vessel but I will investigate further.

Darren

 

[Deleted member 105431]

you could always call glow worm 01773 828100

 

[erisar2001]

I have one of them 24ci from new,(2004) was repaired 4 times.
worst company I had ever got boiler...
till 2004 I used german boilers. 20 years no problem.
and now again n/w. e/v and water pressure sensor faulty.
"e/v ...another common design fault on this horrible boiler (actually a Saunier Duval)."