The air pressure switch of wall-hung boiler is faulty.

The gas pressure switch of wall-hung boiler is a key safety device in wall-hung boiler, which can detect whether the gas pressure is normal or not, and automatically cut off the gas valve when the pressure is insufficient or too high, so as to ensure the safe use of gas equipment. However, due to the use environment and other factors, the air pressure switch may fail, leading to safety problems such as air leakage.

The failure of air pressure switch of wall-hung boiler mainly includes the following points:

1. Gas can't be ignited: When the air pressure switch fails, gas may not be ignited. At this time, it is necessary to check whether the gas valve is open and whether the gas pipeline is normal.

2. Gas leakage: When the air pressure switch fails, the pressure in the gas pipeline may be uncontrollable, resulting in gas leakage. At this time, the air valve should be closed immediately and the professional should be informed to carry out maintenance.

3. Unstable gas injection: Failure of air pressure switch will also lead to unstable gas injection, resulting in "crack" sound. At this time, it is necessary to immediately close the gas valve and check the pipeline.

4. Insufficient combustion of gas or yellowing of flame: Failure of air pressure switch will also lead to insufficient combustion of gas and yellowing of flame. At this time, it is necessary to check whether the gas-oxygen ratio is normal and contact maintenance personnel for maintenance.

In order to ensure the normal operation of the air pressure switch of the wall-hung boiler, it is suggested to check and clean the gas equipment regularly. If the air pressure switch is found to be out of order, the air valve should be closed in time and professional maintenance personnel should be contacted for treatment. It can't be handled by temporary methods, which may easily lead to unpredictable safety accidents.