Gloworm 30C hot water problem

[Robert Tyrrell]

A mate of mine has asked me to have a look at his boiler because the water flow has just about stopped and he's getting grief from his family
I'd like to know if any of you have come across this problem, with this boiler, and have any insights, before I travel 40 miles to help him out.
He called an 'Emergency Gas Man' (His words not mine) last night but the guy apparently just checked the gas rate and diverter valve, and cleaned out the system filter without sorting the problem.
The water flow is, apparently, extremely poor. Not enough to run the shower. The mains pressure is ok.
Any of your (sensible) thoughts on this would be appreciated

 

[Harvest Fields]

Is the water flow hot still? Possible a blocked filter or plate heat exchanger?

 

[Scott_D]

Do they have a filter on the cold?
Any valves under the boiler been shut or partially closed?
Same at all taps or just the shower? Maybe a shower fault

 

[jtsplumbing]

Hard water area ??

 

[Harvest Fields]

Do they have a filter on the cold?
Any valves under the boiler been shut or partially closed?
Same at all taps or just the shower? Maybe a shower fault

I think it is a built in non return On the Glowworm's bit I may be wrong. Have you checked the filters on the shower if it a bar mixer?

 

[Robert Tyrrell]

New plateX and temperature is very warm but not what you'd call hot apparently.
Flow rate of 20ltrs per minute on cold and 2.5 on hot, at the kitchen tap

I think it is a built in non return On the Glowworm's bit I may be wrong. Have you checked the filters on the shower if it a bar mixer?

The water's the same all over the house what's behind the plate X? He reckons there might have been some water spilt by the 'Gas Man' when he changed the plate X

 

[Robert Tyrrell]

btw - there was a filter on the cold but the 'Gas Man' removed it. made no difference apparently. Boiler works fine on CH side but not on HW side; Pressure sensor?

 

[Scott_D]

Sounds like it must be restricted somewhere
Any chance the cold under the boiler was turned off and the valve is now broken?

 

[Gary80gas]

Did the hot water pressure drop suddenly? Only a few options, first check inlet and outlet of hot isolation valve.

 

[townfanjon]

New plateX and temperature is very warm but not what you'd call hot apparently.
Flow rate of 20ltrs per minute on cold and 2.5 on hot, at the kitchen tap


The water's the same all over the house what's behind the plate X? He reckons there might have been some water spilt by the 'Gas Man' when he changed the plate X

20 litres a min !!!! If you are sure

 

[Robert Tyrrell]

20 litres a min !!!! If you are sure

Welllll - that's what he told me over the phone. He's not a plumber so I reckon he probably used a mug to measure the flow and just said 20. I translated that as 20lpm so it's my mistake really. I think that I'll be going over to have a look when he gets back from his holiday