What to do if the geothermal return pipe is not hot
Geothermal heating systems are a common heating method in modern homes, but sometimes there is a problem that the return pipe is not hot, which affects the heating effect. This article will analyze the reasons why the return pipe is not hot and provide solutions to help you restore heating quickly.
1. Analysis of the reasons why the return pipe is not hot
The lack of heat in the return pipe may be caused by many reasons. The following are common problems and corresponding symptoms:
| Reason | performance |
|---|---|
| There is air in the system | The return pipe is cold and there is a sound of water flowing in the pipe |
| filter clogged | The temperature of the return pipe is significantly lower than that of the inlet pipe |
| Circulation pump failure | The system does not circulate at all and the return pipe has no temperature. |
| clogged pipes | The local return pipe is not hot, but other areas are normal |
| The valve is not fully open | Uneven temperature in return pipe |
2. Specific methods to solve the problem that the return water pipe is not hot
1.Exhaust treatment
If there is air in the system, it needs to be vented. Specific steps:
- Turn off the circulation pump
- Open the exhaust valve until water comes out
- Close the exhaust valve and restart the system
2.Clean filter
Clogged filters will affect water circulation:
- Close the water inlet and return valves
- Remove filter for cleaning
- Open the valve after reinstallation
3.Check circulation pump
Checking methods for circulating pump failure:
| Check items | normal state |
|---|---|
| Power indicator light | Always on |
| Pump body temperature | lukewarm |
| running sound | Even and no noise |
4.Unclogging pipelines
For pipe blockage issues:
- Use professional cleaning equipment
- Or contact professional maintenance personnel to handle it
5.Valve inspection
Make sure all valves are fully open:
- Check each branch valve
- Check the main valve opening
3. Preventive measures
In order to avoid the recurrence of the problem of the return pipe not being hot, it is recommended to take the following preventive measures:
| Precautions | Execution frequency |
|---|---|
| Exhaust gas regularly | Once a month during heating season |
| Clean filter | Once before heating and once during heating period |
| Check circulation pump | Once every two months during the heating season |
| System cleaning | Once every 2-3 years |
4. Professional maintenance suggestions
If the problem is not solved after self-treatment, it is recommended to contact professional maintenance personnel. Here are some things to consider when choosing a repair service:
- View service provider qualification certificate
- Ask about repair plans and quotes
- Confirm warranty period
- Request a formal invoice
5. Frequently Asked Questions
Q: Why is the return pipe not hot but the inlet pipe hot?
A: The most common cause is air in the system or a clogged filter.
Q: Why does it stop getting hot soon after exhausting the air?
A: There may be a leak in the system, and the pipe tightness needs to be checked.
Q: How often does the geothermal system need to be fully cleaned?
A: It is recommended to carry out professional cleaning every 2-3 years.
Through the above analysis and solutions, I believe you can effectively solve the problem of the geothermal return pipe not being hot. If the problem is complex or cannot be solved by yourself, please contact professional maintenance personnel in time to ensure the normal operation of the heating system.
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