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6.2 The air conditioner does not work
6.2.1 Leakage protector is open or fuse is burnt.
A. Setting leakage protector to “ON”, it opens immediately (can not reset).
There is possibility of ground fault.
Check insulation resistance (The insulation resistance shall be more than 2M
Ω
).
B. Leakage protector is
OFF.
C. The fuse is open in several minutes after turning air conditioner on.
Disconnect unit wires from terminal
block of outdoor unit. And measure
insulation resistance of outdoor unit.
Poor insulation performance
No
Measure the insulation resistance of
the electric parts of outdoor unit.
Check the rated power of fuse.
Check the resistance of indoor fan
motor coil.
Check the resistance of transformer
coil.
Replace it with a proper one
Replace indoor fan motor.
Replace transformer.
No
No
No
Yes
Yes
Disconnect unit wires from terminal
block of indoor unit. Unplug the unit
and
measure
the
insulation
resistance of indoor unit.
No
Measure the insulation resistance of
the electric parts of outdoor unit.
Poor insulation performance
