Search the forum,

Oil fired boiler not getting heat to any radiator with Honeywell V4073A1039 3 way valve

Discuss Oil fired boiler not getting heat to any radiator with Honeywell V4073A1039 3 way valve in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Status
Not open for further replies.
T

Trevormp

I have an oil fired boiler that is firing up fine, but reaching temperature quickly as it is not heating up the radiators. The pipes in and out are hot. I also have a junction upstairs with feed in pipe and the two pipes leading off are also both hot (one to HW tank and the other to the radiators). I have bled the radiators, there was a lot of air in two radiators but now sorted, but heat is still not reaching the radiators - any of them! The pump seems fine as it is vibrating. Can you suggest a solution (advices would be appreciated as my wife is not impressed with my efforts so far!)
Thanks
 
it sounds like you have a 3 way valve(the 'junction' you describe)This valve opens to allow water to flow to HW,to Heating,or to both.It has a lever on the head that you can manually open,if you do this and the radiators get hot,then the head is probably faulty.

The pump could be the problem also.Is the hot water working?

Try to open the manual lever on the 3 way valve and see if that works first.
 
Many thanks for your reply Bartdude.

I do have a Honeywell V4073A1039 3 way valve. but i cannot see a lever on it - can you tell me where it is situated? The hot water is working fine, so it sounds like it could well be the valve.

Further advice will be much appreciated.

Bartdude said:
it sounds like you have a 3 way valve(the 'junction' you describe)This valve opens to allow water to flow to HW,to Heating,or to both.It has a lever on the head that you can manually open,if you do this and the radiators get hot,then the head is probably faulty.

The pump could be the problem also.Is the hot water working?

Try to open the manual lever on the 3 way valve and see if that works first.
Click to expand...
 
images-23.jpgThe lever is situated on the side of the silver box on the valve head.You can see it in the picture below the black cable.

You need to push the lever sideways,there should be resistance.Push it as far as it will go,you then need to hold it up to engage it into a slot to hold it in place. If your heating then works the valve head needs to be replaced. The head only can be replaced,there's no need to drain the water system. It's a job for an engineer though.
 
Last edited by a moderator:
Bartdude said:
View attachment 1782The lever is situated on the side of the silver box on the valve head.You can see it in the picture below the black cable.

You need to push the lever sideways,there should be resistance.Push it as far as it will go,you then need to hold it up to engage it into a slot to hold it in place. If your heating then works the valve head needs to be replaced. The head only can be replaced,there's no need to drain the water system. It's a job for an engineer though.
Click to expand...


Many thanks, Bartdude. My valve is fitted vertically and the lever is on the underside so had not seen it until now. Have just tried your suggestion and that seems to be the problem, so will get head replaced. Once again thanks for your help - much appreciated.
 
Status
Not open for further replies.

Reply to Oil fired boiler not getting heat to any radiator with Honeywell V4073A1039 3 way valve in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Similar plumbing topics

T
Demand for Heating Not Firing Boiler
Hi, I have a Vailant EcoTec Boiler with a Megaflo. These are controlled by a Honeywell controller. I have one 3 port diverter, where one of the outputs goes to a 2 port diverter prior to the Megaflo (I believe this is some safety feature). I have run into an intermittent problem where some...
Replies
5
Views
226
Basher
B
M
Radiator Not Heating Up
Hi, Sorry if question already answered in previous posts, but I can't find a solution to the below: We recently moved house to a new home that has previously been extended. In one of the bedrooms that has been extended there are 2 radiators, one which looks like it was fitted when the...
Replies
7
Views
472
Ben-gee
B
B
Radiators not heating.
Hi. I hope some one can help. I have a condensing oil burner and it runs fine but the radiators don't heat. Heats the hot water fine. The pump runs and the thermostat turns the boiler on and off. Thinking it could be a thermistor. All help greatly appreciated.
Replies
1
Views
312
oz-plumber
O
J
Towel heaters not getting hot in small pipe system
I have just moved into a late 1990s new-build house with a small bore (about 1/2" OD pipes) gas fired boiler central heating system. All the normal radiators get hot but two of the three towel heater/radiators don't get hot and the pipes feeding them are cool to the touch even after the boiler...
Replies
4
Views
463
Ben-gee
B
D
Radiator Heat Up Order
I am trying to workout in what order my radiators heat up in order to then balance them. I am able to figure out which radiator pipe is the flow/return on each radiator so that I can then grab the right pipe to check which heats up first. There has been an extension done on this house at some...
Replies
1
Views
296
exedon2
exedon2
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock