Troubleshooting
• Turn off the main power switch immediately if a malfunction is detected. Contact your
servicing or installing dealer. If the unit continues to run during a malfunction, the unit may
be damaged or electric shock or fire may occur.
• Do not try to move or reposition the units. Please contact the servicing/installing dealer to
repair or move the units.
• Check the following items before contacting the dealer.
WARNING
Improper operation may lead to personal injury or casualty.
33
115V Mini-Split
Condition
Possible Reason
Unit doesn’t run
When the unit is restarted
immediately after it has just
been turned off
Overload protection switch delays unit start up for
three minutes
When power is turned on
The unit is in standby for one minute
Mist comes from the unit
When cooling cycle starts
Indoor high humidity air is cooled rapidly
Sound comes from the unit
Slight cracking sound is heard
when unit starts
This sound occurs when the electronic expansion
valve initializes.
There is sound when cooling
The sound of refrigerant gas flowing through the
unit may be audible.
There is sound when unit
starts or stops
This sound occurs when gas refrigerant starts or
stops flowing.
There is slight sound when
unit is running or after running
This sound may be the condensate drain pump
operating.
Cracking sound is heard when
unit is operating and after
operating
This sound occurs when the unit panels expand or
contract due to temperature change.
The unit blows out dust
When the unit has been off for
a period of time
Dust that has collected in the indoor unit is blown
out.
The unit emits odor
When the unit is operating
The room odor absorbed by the unit is blown out
again.
Indoor unit still runs
after switch off
After every indoor unit
receives the "stop" signal, fan
will keep running
Indoor fan motor will keep running 20-70s so as
to use excess cooling and heating and prepare
for the next operation. When the X-Fan or Dry
feature is activated, the fan continues to operate
for a short time to dry off the coil.
Mode conflict
COOL or HEAT mode can not
be operated
When switching between cooling and heating
modes, the outdoor unit will take several minutes
to reverse the direction of refrigerant flow and to
pre-heat the coil in heating mode. COOL mode
doesn't conflict with DRY mode and FAN mode.
Error Code
E7 is shown on one or more
indoor units
E7 means that this indoor unit is calling for a
mode that conflicts with the mode of the outdoor
unit. E7 will disappear a few seconds after the
mode of the unit is changed to match the outdoor
unit mode. The outdoor unit mode will only change
when all indoor units have been changed to the
new mode.
NOTE:
If the problem persists after checking the above items and taking appropriate measures, please stop operation
of the unit immediately and contact your local service agency or dealer. Diagnostics and repairs should be completed
by a professional service technician.
