How to solve the low temperature problem of wall-hung boiler

How to solve the low temperature problem of wall-hung boiler

As an important piece of heating equipment in modern homes, wall-hung boilers have a direct impact on home comfort. Recently, many users have reported that wall-mounted boilers have experienced low-temperature failures, resulting in poor heating effects. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of the causes and solutions of low-temperature failures of wall-mounted boilers.

1. Common causes of low temperature failures of wall-hung boilers

According to recent user feedback and maintenance data, the main causes of low-temperature failures of wall-hung boilers are as follows:

2. Solve the low temperature failure of the wall-mounted boiler step by step

Step 1: Check water pressure

The normal water pressure of the wall-mounted boiler should be maintained between 1-1.5Bar. If the pressure is too low:

1. Find the water filling valve at the bottom of the boiler (usually a black knob)

2. Rotate the water injection valve counterclockwise and observe the pressure gauge to 1.5Bar.

3. Close the water filling valve clockwise

Step 2: Confirm gas supply

1. Check whether the gas valve is fully open

2. Confirm that the balance of the gas meter is sufficient (smart meters need to insert a card to check)

3. Observe the flame color: Normally it should be blue, yellow flame indicates insufficient combustion

Step 3: Clean the heat exchanger

Solution to blocked heat exchanger:

Step 4: Test the temperature sensor

1. Remove the sensor after powering off

2. Use a multimeter to measure the resistance value: it should be about 10kΩ at 25°C.

3. If the value deviation exceeds 20%, it needs to be replaced.

3. Maintenance suggestions to prevent low temperature failures

According to maintenance big data analysis, regular maintenance can reduce the probability of failure by 80%:

4. Answers to users’ high-frequency questions

Q: The wall-mounted boiler displays low temperature but the actual water temperature is normal?

A: This is a typical sensor failure. You need to check whether the sensor wiring is oxidized or has poor contact.

Q: What should I do if low temperature faults occur repeatedly?

A: It is recommended to check the following aspects: 1) whether the gas pressure is stable; 2) whether there is air in the system; 3) whether the water pump is operating normally.

Q: How to release low temperature protection in winter?

A: Some models need to press and hold the "+" and "-" keys simultaneously for 5 seconds to enter the engineering mode, and set the code P01 to 0 (for details, please refer to the manual).

5. Professional maintenance suggestions

When encountering the following situations, it is recommended to contact professional after-sales immediately:

1. The fault code continues to display for more than 24 hours

2. Smell obvious gas odor

3. The wall-hung boiler makes abnormal noises

4. The problem still exists after multiple resets

Through the above systematic analysis and solutions, I believe you can effectively deal with low-temperature failures of wall-mounted boilers. Regular maintenance and correct use are key to ensuring efficient operation of your wall-hung boiler.