Glowworm back boiler, Inset BBU 40 or 50.

[Briansmad]

Glowworm back boiler, Inset BBU 40 or 50. Keeps cutting out red light comes on.

Plumber said it was the coil in the tank not circulating. But the tank does circulate, it has been de-scaled. Old council house, All radiator pipes come from upstairs, If I run the water out of one downstairs radiator while the boiler is on the water gets hot and it does not reset. There is one radiator downstairs that does not work, It will not get hot or warm. Will this one radiator cause the problem? The hot water pipes get hot at the bottom near the boiler and the top near the tank. The radiator out let gets red/burning hot then stops. Is there an easy way to fix this???? There are four pipes coming from the back as I can see, two 28mm for hot water. Two 22mm with inline pump for radiator, The radiators were getting hot upstairs to when i was running water off radiator with the water pump turned on. Thks.

 

[Deleted member 105431]

Control box faulty (comes with new pcb, boilerstat and leads.) cheapest to ring glow worm for a fixed price repair £215 phone 01773 828100

 

[Briansmad]

Thats what we thought, But if we leave the downstairs radiator draining all the time, the boiler will not trip out. It will stay working for an hour. That's why i thought not the control box???

 

[ChrisR]

Could be dud thermostat, (sensor or whatever it uses), also would have to query pump , and general sludge problems. Air in gravity loop?

 

[Agile]

I am not familiar with this boiler but from the details supplied I would expect that the boiler is overheating.

This "plumber" seems to think that the gravity HW is not circulating. The most common cause of this is a lack of feed water as a result of a stuck ball valve or a blocked feed pipe.

Have you checked the F&E tank to see if it has water?

Why didn't this "plumber" fix the problem?

Tony

 

[Briansmad]

Plumber said we needed a new cylinder or a new combi boiler, £600.00 or £1400.00. I have checked the tank and de-scaled the tank. The system is an Ellison hot water tank, with a cistern on the side and water heating expansion tank that circulates. This circulates when cleaned out but not when boiler is turned on. Also radiators do not get hot unless running the water straight out of the radiator nearest. The hot water heating coil in the boiler is free and water is flowing freely but not when boiler is on.

 

[Briansmad]

I can buy a Glow-worm 801310 PCB and Thermostat 800999 for £110.00 and fit myself, Better then paying over £200 from glowworm. This depends on the full exact problem. I can follow instructions / diagrams.

 

[Agile]

I can buy a Glow-worm 801310 PCB and Thermostat 800999 for £110.00 and fit myself, Better then paying over £200 from glowworm. This depends on the full exact problem. I can follow instructions / diagrams.

I am sure that you can, but you clearly have another problem ( possibly two! ).

A competent boiler engineer would test the various components before replacing them.

Tony

 

[Deleted member 105431]

are u corgi registered? probably not. in which case you shouln't touch the boiler! you clearly haven't a clue.

 

[Briansmad]

Is this a help forum? May be the moderator's should take some control?

PLEASE only post if offering some Help! Otherwise stay out of it.

I have already had an engineer visit who offered to replace the full system. (A competent boiler engineer would test the various components before replacing them) Never bothered to find out what the problem is or tested any equipment. (How many engineers do i need until someone can verify the exact problem).

Do you need to corgi reregistered to undo a few screws and unplug a few wires? (are u corgi registered? probably not. in which case you shouldn’t touch the boiler! you clearly haven't a clue.) I am competent at PC Building, Plumbing, Mechanics, Electrical work etc.

Can you change a cylinder head gasket in 2 Hours? Can you build a fully functional computer in 30 mins? Can you fit your own consumer box? Follow building regs while knocking walls out and installing outside armoured cable? etc etc.

We can start a debate on being competent or not as the case may be! Because my normal day to day job is not plumbing and heating does not class me as been not competent enough to do a small job.

Will you call the heating engineer that came to fix the problem as been not competent because he could not find the problem?

 

[kjharry]

When we used to do council house refurbs using Rolyat or Elson tanks with gravity primaries a Drayton Cyltrol valve was always specified,
http://www.uk-plumbing.com/acl-drayton-invensys-cyltrol-valve-1bsp-angle-p-1377.html
These are set to stop overheat of the domestic hot water due to failure of the boiler thermostat by closing and preventing primary gravity flow, if you have one of these fitted in the primaries it is not unkown for them to go wrong and cause the symptoms you are getting. However, as has already been stated, the boiler thermostat should be cutting in and shutting the boiler off before overheat lockout, so you may have a problem there, also your radiator problems could be the pump, air in rads, sludge in rads, valve turned off, stuck trv, system imbalance, or a combination of any.

 

[Briansmad]

I have checked the full system no other valves fitted. No Drayton valve fitted. Maybe there is 2 issues/problems here?
Just needs diagnosing, i am happy to cut and solder plumbing pipes i have all 15mm, 22mm, 28 mm connectors,
I know the hot water pipes are circulating, and i know the radiators are circulating as 6 rads get hot, 1 rad does not, But i can sort that later after the boiler Stops over heating. What else would this leave to be the problem?
Looking at Inset 50 there are to pipes connected to boiler Flow and Return, Looks like these are teed off so two 28mm pipes for hot water and two 22mm for rads.

 

[Agile]

Let me try to explain why some of us are concerned about what you propose doing.

I am not familiar with your model but there will be a gas connection between the fire and the boiler. To acccess the boiler for maintenance and repairs its necessary to remove the fire. As that involves disconnecting a gas connection that work should only be done by a corgi who will be able to test that its safe afterwards.

My understanding is that no DIYer can fit a new comsumer unit any more as its now a notifyable operation and requires a Certificate issued by the qualified person who replaced it. ( Like a gas appliance ! )

Tony

 

[Briansmad]

Exactly and as I am not stupid! I am sensible and competent I will not be touching or moving the gas connector or pipes in any way shape or form. I am just looking for some help in something I am not familiar with. I value my life and my families. Water/floods can be repaired or fixed. Seems you TAR everyone with the same brush and go OFF on one without providing any help. Maybe you could download the instruction / service manual for the inset bbu 50 and see for yourself. Then maybe provide HELP if this is what you want to do.

 

[AlanE]

are u corgi registered? probably not. in which case you shouln't touch the boiler! you clearly haven't a clue.

PLEASE only post if offering some Help! Otherwise stay out of it.

Oh dear another DIYer who thinks he knows best. Perhaps Dangermouse has offered you the best advise of ANYBODY on this or any other forum.

There are times when a DIYer needs to stop and realise that there are somethings, in the name of safety that are better left to a professional sorry. And thats from someone who makes a living from boiler repairs and one who also does so for a major manufacturer.

However, as always, those wo THINK they know it all simply hate it when told the truth.

I can follow instructions / diagrams.

but no skills to interpretet those instructions. You have actually diagnosed the problem in a previous post yet failed to act upon your findings. The water is not circulating. Pump is not supplied by boiler so a bit of basic fault finding required.