Air conditioner maintenance device

The utility model discloses an air conditioner maintenance device which comprises a pressurization and leakage detection system, a vacuum pumping system, a refrigerant recovery system and a change-over switch, and the pressurization and leakage detection system comprises a first switch, a first pressure gauge, a first fluorine connector and a pressurization electromagnetic valve. The vacuumizing system comprises a second switch, a second pressure gauge, a second fluorine connector and a vacuum electromagnetic valve. The refrigerant recovery system comprises a third switch, a third pressure gauge, a third fluorine connector, a recovery electromagnetic valve, a filter, a compressor, an isolation electromagnetic valve, a condenser, a balance electromagnetic valve, a time relay and a fan. The utility model has the beneficial effects that the switching among the pressurizing, leakage detecting, vacuumizing and refrigerant recycling functions can be conveniently and quickly realized, the operation steps are simple,