1. If the wall-hung boiler has been used continuously for more than two heating seasons, it is necessary to clean and maintain the wall-hung boiler.

2. The running sound of the wall-hung boiler becomes louder and accompanied by abnormal noise.

3. There is a problem with the heating of the wall-hung boiler. For example, the heating speed is slower than before, the hot water is suddenly cold and hot during bathing, the water output speed is slow, and the water output is smaller.

4. Gas bills are much higher than before.

①Noisy.

②The hot water is small.

③Exhaust gas, the gas consumption in the heating season gradually increases, but the indoor temperature is not high.

④The boiler shuts down in the cold winter, which affects the user experience.

①Fume from high temperature combustion

②The ash layer in the air

③Scale, corrosive condensate produced when the condensing gas boiler is heated.

1. High efficiency and energy saving. Clean the soot and scale to improve the heat exchange efficiency; regularly check the combustion status of the boiler to ensure the combustion efficiency of the boiler; experience shows that regular maintenance can achieve 6-10% energy saving every year.

2. Safer and more durable. Prolonged use will lead to loose flue pipes, gas leakage, blockage of condenser pipes, blockage of burners, and corrosion of water quality. Regular inspection can remove potential safety hazards and prolong the service life of components.

3. Avoid the unexpected shutdown of the boiler. Allowing your family to enjoy warmth and comfort in the cold winter.

4. Energy saving regulations: It is required that heating and hot water equipment require professional maintenance and maintenance by professionals, and it is recommended at least once a year.

1. External inspection of the wall-hung boiler

2. Wiring harness inspection of internal components of wall-hung boilers

3. Check the pressure of the expansion tank

4. Check and replace the ignition needle

5. Use the endoscope to inspect the main replacement interior

6. Main replacement cleaning

7. Water seal cleaning

8. Burner and fan cleaning

9. According to the actual situation, clean and maintain the inlet and outlet valve bodies and plate replacement of the wall-hung boiler.