Service manual
Reverse Phase (Phase Loss) Protection (If the power is of inconsistent phase sequence or phase
loss, the unit will not be started and the fault code will be displayed).
Antifreeze Protection (When the surface temperature of indoor heat exchanger is too low, the
compressor will be stopped and the fault code will be displayed).
Over-temperature Protection (When the surface temperature of indoor heat exchanger is too high,
the compressor will be stopped and the fault code will be displayed).
Sensor Fault Alarm (When the sensor is in short circuit or open circuit, the fault code will be
displayed).
◇ Display Function:
CLOCK Display (To display and set the real time).
AUTO START / STOP Display (To display and set the time for auto start or stop).
CANCEL TIMER Display (To display the timer cancellation).
FAN SPEED Display (The fan speed is displayed in HIGH, MEDIUM or LOW).
RUN MODE Display (Cooling, Dehumidify, Heating, Fan)
DEFROST Display (Display when the unit under heating mode is defrosting)
TEST Display (Display when under test mode).
ENERGY SAVING Display (Display when running under energy saving mode)
TEMPERATURE Display (Display the room temperature and preset temperature)
Fault Code Display
★ Centralized Week Timer Control Function
This unit is available with centralized week timer control function for your option. One piece of
centralized week timer controller can realize simultaneous control over 16 main units for their start / stop
and timing. And it can also execute separate control over one unit for its start / stop and timing. This
relieves you from the trouble to run back an forth to start or stop the main unit. The centralized week
timer controller for air duct model communicates with the manipulator of a single unit by 485 mode, with
maximum communication distance up to 1200m. The number of each unit will be shown on the
centralized week timer controller. The number of the unit depends on the position of the dial switch on
the manipulator for each duct type air conditioner. The connection between centralized controller and
manipulator is shown below:
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