Question about Heating & Cooling

1 Answer

My oil fired central heating system has stopped heating up stairs.The rads and pipes have been flushed out,when the system was refilled the upstairs rads heated ok untill the system was switched off for the night, the following evening when the boiler came on there was no heat upstairs. We have twice repeated the draining down and refilling of the system with the same results. Can you help?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 230 Answers

Since you have done a good job bleeding the system, I will suggest that the impeller on the pump is bad. Many times these will simply deteriorate in the volute causing the symptoms that you describe.

This looks like it is in the wrong forum. Try reposting this in the heating section of the FixYa web site to get more responses.

Posted on Jul 03, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

We had no heat in rads downstairs we changed pump and flushed system no we have heat downstairs but not up any ideas?


Make sure the air is bled from the upstairs rads.
[air = top of rad is cold & bottom hot]

If you need to balance the rads to maintain an even flow through all then :-
Turn off all rads [one valve fully open and the other closed] Get heat going and open each rad valve, in turn, about 1 or 2 turns. Start with upstairs. The position you need to get to is when the return pipe fron each rad is a few degrees below the flow pipe. Adjust each rad valve to get this effect a few times may be necessary

Mar 19, 2010 | Water Heaters

1 Answer

Boiler fires up for 15 secs and then drops off. pcb has been changed twice, heat exchanger changed rads flushed. boiler is 2years old


Check that the overheat thermostat is working [i.e. the wires are connected] - If in doubt connect the terminals together to bypass.
Check that the air extractor fan is working and that the coaxial pipes have no gaps.
Check the air sensor plastic tubes to the fan are connected and intact
Check the central heating valves below the boiler and not turned off

Mar 13, 2010 | Long Life Water Heaters

1 Answer

We were away for a month we got home 2 days ago our friends put the heating on for a few hours,but yesterday the rads that were hot yesterday arent warming up today nor the upstairs ones,we wondered if...


drain your system and check all your valves,if in dout get an engineer out,dont risk it.
refill the system and put it on low.
more likely you will have lying sludge and you will need a flush.

Jan 12, 2010 | Desa International CBN30T Central Heating...

1 Answer

I can only get heating to the radiators upstairs, not downstairs


balance the rads.
upstair radiators turn all valves off,heat will then divert downstairs,open valves upstairs 4 turns on locksheilds and number 4 on trvs if u have any.
then if that does not work get a combi or powerflush.
if u cant afford then drain a little from rads,get x300 sludge remover from plumb shop and put in header tank(not hot water tank).
then fill system up and repeat balancing.

www.jollygreenplumbingmachine.co.uk

Dec 26, 2009 | Desa International CBN30T Central Heating...

1 Answer

Just replaced thermostat and flushed system but got no heat!


disconnect the heater supply pipes and put the hose through the heater pipes and the reverse the flow direction this should help .If it doesnt the put some caustic soda in the rad and run engine for till it gets hot then for a further 5 mins ,then flush it out again ,try it if it works then refill with antifreeze .use about 200grms of caustic soda

Dec 08, 2009 | 1994 Honda Accord

1 Answer

We had to drain down the central heating system due to repairs,we fix repair and flushed out the system,we refilled and vented from the lowest to highest rads, vented pump ,top rad heated,next two rads...


Just fill it up until the water reaches to the highest rads.
With the system running, try venting out the vacuum on
the rads starting from the lowest to the highest until
the warm water will be felt from each rad. Just send your e-mail comments and God bless you.

Oct 15, 2009 | Plumbing

1 Answer

Downstairs toilet won't stop filling, upstairs toilet won't fill


for the upstairs if the valve is fully on there is not much you can do other than replace water service to the house or heaven forbid repipe.Valves usually don't restrict fill volume.But you can take the supply loose from the tank and stick it in a bucket turn the valve on and check the flow.this should narrow it down.Down stairs repair or replace flush valve

Aug 04, 2009 | Home

1 Answer

3 out of 7 rads working with hot water


This is a flow problem within the system and you have ruled out the two major problems already.
asuming the pump has been fitted in the correct way round and the pump isolation valves are open fully. have you tried closing down the radiator valves upstairs and forcing the flow around the downstairs circuit? also is there any zone valves on the circuit not opening.
Is it a conventional type system with a header tank ?

Feb 01, 2009 | Heating & Cooling

2 Answers

Upstairs rads r cold appears to be no pressure 2 vent rads


you have air lock in top floor rads must bleed it out start with the one closest to boiler and work your way out to what you figure is the end of line as best you can figure

Dec 03, 2008 | Water Heaters

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

145 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2097 Answers

Dan Webster
Dan Webster

Level 3 Expert

8205 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...