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What should I do if the floor heating does not circulate?

2025-12-16 15:04:30 mechanical

What should I do if the floor heating does not circulate? ——Comprehensive investigation and solutions

Failure of floor heating to circulate is a common problem in winter, which may result in uneven indoor temperatures or failure to heat up. This article combines popular discussions across the Internet in the past 10 days to sort out systematic solutions to help users quickly locate and fix problems.

1. Analysis of common fault causes

What should I do if the floor heating does not circulate?

Fault typeProportion (data in the past 10 days)Typical performance
Pipe air blockage42%The area is not hot and the sound of water flow is obvious
Water pump failure28%The system is completely loop-free
filter clogged18%The temperature of the return pipe is significantly lower than that of the inlet pipe
pipe siltation12%The overall efficiency of a system that has not been cleaned for many years decreases.

2. Step-by-step troubleshooting guide

Step 1: Check the pressure difference between supply and return water

Use a pressure gauge to measure the inlet and outlet pressure of the water distributor. The normal pressure difference should be 0.05-0.15MPa. If the pressure difference is too small, there may be a problem with the water pump or filter.

Step 2: Exhaust operation

① Close all circuits
② Slowly deflate the air from the water distributor exhaust valve
③ After observing that the water flow is stable, close the exhaust valve
④ Path-by-path circulation exhaust

Step 3: Check Circulation Pump

Test itemsnormal state
Pump body temperatureWarm (40-50℃)
running soundUniform buzz
axis rotationCan be moved with a screwdriver

3. Targeted solutions

1. Air blockage treatment

It is recommended to use automatic exhaust valve (top 3 most searched products on the entire network):
① Sunwell SR-01
② Danfoss RA-N
③ MAD-Q

2. Water pump repair

Maintenance data for the past 7 days shows:
• 63% are damaged capacitors (replacement cost 80-120 yuan)
• 22% are bearing stuck (requires professional disassembly and cleaning)
• 15% is caused by motor burnt out (it is recommended to replace it directly)

3. Deep cleaning solution

Cleaning methodApplicable situationsEffect duration
Pulse cleaningThe system has not been cleaned in 3 years2-3 years
chemical cleaningSevere siltation (more than 5 years)4-5 years

4. Preventive maintenance suggestions

① Check the pressure gauge value before heating every year
② Install the water quality filter (hot search model: Honeywell FF06)
③ Keep the system full of water for maintenance (to prevent oxidation)
④ Professional cleaning every 2-3 years

5. Emergency handling skills

If the heating stops in the middle of the night:
1. Close all branch valves
2. Open the highest exhaust valve
3. Slowly drain water from the drain outlet of the manifold for 2 minutes.
4. Start after refilling with water (this method has recently received over 100,000 likes on Douyin)

Through the above structured solutions, more than 90% of floor heating circulation problems can be solved by yourself. If the problem still cannot be solved, it is recommended to contact professional floor heating maintenance personnel (recent service average price: 150-300 yuan/time).

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