How to deal with the failure of the air pressure switch of the wall-mounted boiler

How to deal with the failure of the air pressure switch of the wall-mounted boiler

Wall-hung boilers are common heating equipment in modern homes, and their normal operation cannot be separated from the coordinated work of various components. Among them, the air pressure switch is one of the important components to ensure combustion safety. Once the air pressure switch fails, it may cause the wall-mounted boiler to be unable to ignite or frequently shut down. This article will introduce in detail the causes, detection methods and treatment plans of the wall-mounted boiler air pressure switch failure to help users solve the problem quickly.

1. The function of air pressure switch

The air pressure switch is mainly used to monitor the air pressure in the combustion chamber of the wall-mounted boiler to ensure sufficient oxygen supply during the combustion process and to prevent exhaust gas from being injected back. When the wind pressure is abnormal, the switch will cut off the gas supply to avoid safety hazards.

2. Common causes of air pressure switch failure

1.Air pressure switch is damaged: The internal diaphragm is broken or the contacts are oxidized, resulting in signal transmission failure.
2.Flue blocked: Foreign objects or snow impede smoke exhaust and affect wind pressure detection.
3.Fan failure: The fan speed is insufficient or stalled, unable to generate sufficient wind pressure.
4.Air leakage in connecting pipes: The silicone tube ages and cracks, resulting in loss of pressure signal.

3. Steps to deal with air pressure switch failure

1.preliminary inspection: Turn off the power, check whether the flue is clear, and clean any foreign objects that may be blocked.
2.Test the air pressure switch: Use a multimeter to measure the switch contacts. There should be on-off changes under normal conditions.
3.Check fan: Restart the wall-mounted boiler and observe whether the fan is operating normally.
4.Replace faulty parts: If the switch or fan is damaged, contact a professional to replace it.

4. Suggestions for preventing air pressure switch failure

1. Clean the flue regularly to avoid clogging.
2. Conduct a comprehensive overhaul of the wall-mounted boiler before the heating season every year.
3. Avoid disassembling the air pressure switch by yourself to avoid damaging precision components.

5. Maintenance cost reference

If the above methods still cannot solve the problem, it is recommended to contact the after-sales service or professional maintenance personnel of the wall-mounted boiler brand to deal with it. Do not force the operation to avoid expanding the fault.