Variable frequency heat pump unit with self-checking function

The utility model discloses a variable frequency heat pump unit with a self-checking function, which comprises a heat pump unit, a self-checking component is arranged at the top end of the heat pump unit, the self-checking component comprises a shell, the shell is fixedly connected with the heat pump unit, a detection mechanism is arranged in the shell, the detection mechanism comprises a movable plate, and the movable plate is fixedly connected with the heat pump unit. The movable plate is movably connected with the shell, a detection assembly is arranged on the side edge of the movable plate and comprises a resistor arc plate, a swing rod is arranged on the side edge of the resistor arc plate, a guide plate is arranged on the side edge of the swing rod, and the guide plate is connected with the swing rod and the resistor arc plate at the same time. The heat pump unit solves the problems that an existing heat pump unit lacks an inclination self-checking function, and when the heat pump unit inclines, an alar