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33
DHM36CMB21S
DHM42CMB21S
Conditions
Causes
Corrective Actions
The unit does not run
B
lown
fuse or opened breaker.
Change the fuse or close the breaker.
Power off.
Restart the unit when power on.
Power supply plug is loose.
Plug the power supply properly.
Insufficient batteries voltage of the
remote controller
Change new batteries.
Remoter controller out of the control
scope.
Keep the control distance within 8 meters.
The unit stops soon
after it starts
Clogged inlet/outlet of the indoor/
outdoor unit.
Clear the obstacle.
Cooling/Heating
is abnormal
Clogged inlet/outlet of the indoor/
outdoor unit.
Clear the obstacle.
Improperly set temperature.
Adjust the setting of the remote or wired
controller.
Too low set fan speed.
Adjust the setting of the remote or wired
controller.
Adjust the setting of the remote or wired
controller.
Opened door and window.
Close the door and window.
Direct sunlight.
Hang a curtain or blinds over the window.
Too m
any
people in the room.
Too
many
heat sources in the room.
Reduce the heat sources.
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