1. Chimney blockage: The main function of the range hood of the wall-hung boiler is to discharge the waste gas generated after the combustion of the wall-hung boiler. If the chimney is blocked and the flue gas cannot be discharged, it will lead to backward flow of flue gas, so it is necessary to clean the chimney in time;

2. Fan failure: the fan of the smoke exhaust machine provides forced wind direction, so that the exhaust gas in the smoke exhaust pipeline can be discharged quickly. In the process of operation, the fan may be damaged, aging and other faults, which need to be repaired or replaced;

3. Installation of smoke exhaust pipe: The installation of smoke exhaust pipe should conform to the specifications, and there should be no bending or blocking the passage, otherwise the exhaust gas will flow backwards;

4. Not cleaned in time: The range hood will produce all kinds of dirt when running. If it is not cleaned for a long time, it will not only affect the function of the range hood, but also affect the service life of the burner, shell and other equipment. Therefore, it should be cleaned and maintained regularly.

The above are the common faults of wall-hung boiler range hood. If there is a fault, it needs to be handled in time, and spare parts cannot be disassembled and replaced at will, so as not to cause greater losses and potential safety hazards. It is recommended to find professional technicians to check and repair.