Stove Reaching 70-80 Degrees, But Radiators Remain Cold: Heating Issues

Question

Hello,
I have a problem with the stove, or rather with the radiators. The temperature on the stove reaches 70-80 degrees and the radiators are cold. Hot on the outlet manifolds, cold on the return. The heaters do not heat up at all anymore. I am asking for some help.

kamil12239 · Answer

Bleed the radiators and let the water circulate

marqqv · Answer

What kind of installation can pictures drawing. Is there a circulation pump or just gravity?

Sa1rus · Answer

Radiators vented, the pump is very old-nova. I have a Vitodens 100 stove with a Vitocell 100 tank. The installation is working
5 years And so far there has been no problem. Service done once a year. From last year I had a leak somewhere and the pressure from the furnace dropped, so I allowed it, now the service technician made a leak, but it does not heat up ?

marqqv · Answer

Filter cleaned at the pump.

Sa1rus · Answer

The service technician said so

marqqv · Answer

Did you check the pump?

BUCKS · Answer

The radiators have valves to isolate the radiators from the system. In the case of bottom feed radiators, you can cut off the supply and return separately. Check all shutoff valves. If the radiators are cold, you have a blockage to the water flow somewhere. It is your installation, you should know where you have all the valves that may block the water flow.

MonikaMarcin · Answer

Without a drawing or a photo, we can only confuse ourselves.

Marcinzabrze · Answer

And the return at the stove is cold? warm? Is there a 4-way valve in the system?

mirrzo · Answer

Clogged filter; for sure.

MonikaMarcin · Answer

Colleagues, guessing without specifics (about the installation) from the author for a long time? But maybe the pump fell ... Maybe the gravity valve ... Maybe the filter ... Maybe, maybe, maybe ...

marqqv · Answer

See what you are writing for? The author is just sitting in the basement, taking pictures, cleaning the filter and checking whether the pump is working. So wait while I write something.

Sa1rus · Answer

The radiators were left untouched (previously there was no problem), the valves were unscrewed, and how to check if the pump works without unscrewing it? Photo of the installation

marqqv · Answer

Touch with your hand you will feel you can change gear (revolutions) or something changes.

piotr_boncza · Answer

Go back to the basics, that is, clean the filter. Then it is worth making sure that the three-way in the boiler switches completely to what. It may also be that the ball valve at the filter did not open after moving the handle.

Sa1rus · Answer

There is no vibration at the pump

marqqv · Answer

Where do you have this service technician who checked everything? If you are not able to continue to act, call him or another one and the problem will probably disappear.

MonikaMarcin · Answer

From the photo you can see that it is a little WILO. Let us not expect an earthquake. There is no bleeding screw from the face on it? You would see the rotor.

marqqv · Answer

Check if it is connected to the electricity or if it is being supplied with electricity. If you know how to do it, so that you don't get electrocuted I see the best solution for you to call a service technician

MonikaMarcin · Answer

The tension comes to her at all. Look inside the tin and measure. Maybe the cable broke.

piracik · Answer

Star-Z NOVA is a circulation pump o 4W power It is in no way suitable for a heating system. She circulates barely stirring. Unfortunately, the photos do not show the manifolds mentioned. The pump that you can see is a circulation pump installed rather on DHW and has no effect on central heating.

Sa1rus · Answer

The voltage is coming, I checked with a phaser, but the vibrations are ?

piracik · Answer

Forget this push-up. It is for something else. :roll:

First of all, the filter as he wrote mirrzo
But the filter on the CO installation, which is not visible in the photo.

marqqv wrote:
Filter cleaned at the pump.

Sa1rus wrote:
The service technician said so

Forget a service technician who left you with such a topic. I wouldn't trust :cry:

Then the condenser in the pump, but the one in the boiler.

Check if the boiler is overheating. The 3D valve may also be blocked, but this is as a last resort.

MonikaMarcin · Answer

We write about photos from the very beginning. We already have one. So, dear author, maybe finally do some more tips.

piracik · Answer

Look for a filter on the return from the system to the boiler. But not on the pump tube.

If the filter is clean, replace the condenser in the pump, but the one in the boiler.

There are also service valves under the boiler. The question is whether they are open. The one on the left looks open.

MonikaMarcin · Answer

Vibrations do not necessarily represent proper pump operation. Maybe it is just buzzing but not spinning, or something has slowed it down considerably. Probably, however, disassembly and inspection.

piracik · Answer

Are you talking about the green one under the cauldron?

Sa1rus · Answer

Is it on the return the one in the picture where you can see the pump?

Stove Reaching 70-80 Degrees, But Radiators Remain Cold: Heating Issues

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