Who will solve the problem if the heating in the community is not hot?

Every winter heating season, many users call to report that the heating at home is not hot. What is the reason and how to solve it? The problem that the heating is not hot is actually a common problem, but there are many reasons for this problem. Today 1 HVAC series lists the most common reasons why 13 heating is not hot, hoping to help parents.

There is gas in the radiator.

The performance is as follows: a group of radiators are hot or not, for the bathroom radiator, it is hot below and not hot above, or the radiator has the sound of water running. Especially in the first half of heating, this often happens because there are many gases in the heating system of the whole community.

Solution: Always open the manual exhaust valve on the radiator until there are no bubbles in the running water.

2. The valve of the water separator is not opened.

Performance: Some radiators are hot and some are not.

Solution: Check whether each branch valve on the water separator is open. If not, tighten the valve handle parallel to the branch pipe.

3. The temperature control valve on the radiator is not opened.

The performance is that the radiator is not hot.

Solution: Check whether the inlet and outlet water temperature control valve of unheated radiator is open.

4. The radiator is not installed correctly.

The performance is: the radiator is partially hot, or only the lower supervisor is hot. If the radiator with four ports (also called "upper inlet and lower outlet") is installed as "lower inlet and lower outlet", water will flow directly from the lower main pipe, only the lower main pipe is hot, and the upper radiator is not hot; the radiator installed as "upper inlet and lower outlet" is installed as "upper inlet and lower outlet", and some radiators are not hot, and so on.

Solution: Find the HVAC company that installed the radiator to reinstall or replace the radiator.

5. Radiator enters return pipe.

The performance is that the lower part of the radiator is hotter than the upper part without the reverse connection of the main pipe, and the heating effect is worse than normal.

Solution: find the company that installed the radiator and adjust it.

6. The temperature control valve is blocked.

Performance: the blocked radiator is not hot. Because the stolen goods in the system blocked the inner cavity of the temperature control valve, water could not pass through.

Solution: find a property or HVAC company to remove the temperature control valve for cleaning or replace it with a new one.

7. The radiator or system is blocked by stolen goods.

The performance is as follows: the heating effect of all radiators at home is lower than that of the previous year or stage, or some radiators are not hot at all, especially those users who have not installed filters on the outdoor supervisor.

Solution: find a property to thoroughly wash the whole heating system at home.

8. The heating supervisor is connected backwards.

The performance is as follows: the upper and lower radiators are heated first, and the temperature of the main pipe connected with the heat meter is lower than that of the other main pipe. The connection of the main pipe is very harmful, not only the heating effect of the radiator is poor, but also the heating water flows into the indoor heating system from return pipe without filtration, and the radiator and pipeline are easily blocked by stolen goods.

Solution: If the standpipe water supply is wrong, find a property management company to adjust it. If it is only answered by the resident supervisor, ask the company of indoor heating system to adjust it.

9. The responsible filter is blocked by stolen goods.

The performance is as follows: each group of radiators at home is hot at first, and after a while, most radiators gradually become less hot.

Cause: The filter installed on the water inlet pipe in the pipeline well was blocked by stolen goods.

Solution: Find a property to clean the filter.

10, heating system pressure is low.

The performance is: some radiators in the room are hot, some radiators are not hot, or not hot at all, or the effect is poor.

Reason: It is generally necessary to ensure that the indoor heating pressure is not lower than 0.3Mp (normally 4-8Mp). At the beginning of heating every year, there is a low-pressure trial operation stage because the property company is afraid of high system pressure. If the indoor heating pressure is still less than 0.3Mp after formal heating 10, it needs to be solved by the property management company, and the radiator supplier can't solve it.

1 1, and the pressure difference between inlet and outlet is small.

The performance is: the radiator is not hot, or some are hot and some are not hot, or the radiator is hot above and not hot below. Turn off other radiators and turn on only the radiator that is not hot. If it is hot at this time, it means that the pressure difference between goods under pressure is small.

The reason is that the pressure difference between inlet and outlet water is small, and the water flow is slow or does not flow at all. Generally speaking, the difference between the inlet pressure and the backwater pressure is not less than 0.05Mp, otherwise, even if the inlet pressure is higher, because the pressure difference is small, just like a calm river without a drop of water, it will not flow and the heating effect will certainly not be good.

Solution: find a property company to adjust the pressure difference at home.

12, heating water temperature is low.

The performance is: the radiator is not too hot, or although the radiator is a little hot, the indoor temperature can't reach the national standard 18℃. The general design standards for heating in residential quarters are: inlet water 80℃, return water 60℃, room temperature 18℃, and radiators are also configured according to this standard. If the water temperature is low, the heat dissipation of the radiator will be reduced, which will not meet the indoor heat load, and of course the indoor temperature will not rise.

Solution: find a property to improve the water temperature of household heating to meet the design requirements.

13, there are not enough radiators.

The performance is as follows: when the temperature difference and pressure difference of supply and return water meet the design requirements (the general national design standards are inlet water 80℃, return water 60℃, room temperature 18℃, household pressure not less than 0.3Mp, and pressure difference not less than 0.05Mp), the surface temperature of radiator is very high, but the indoor temperature never reaches the national standard 18℃.

Solution: If there is no energy-saving design at home, such as single-layer glass window, adding a layer of glass window, or changing thick curtains, etc. If the temperature is not enough, consider changing to a more powerful radiator.