GD Midea Refrigeration Equipment Co. Ltd Service manual for K portable Series
4
Anti-icing function at cooling mode.
Temperature sensor err self-diagnose.
Both temperature mode display
2.2.4 Protection
2.2.4.1 The compressor functions protection with
a delay of three minutes.
2.2.4.2 Sensor protection at open or short circuit.
2.2.4.3 Evaporator anti-icing protection at cooling
mode.
2.2.4.4 Water full alarm
There are two water position switches used in
the unit. One detects the water depth in the
chassis and the other detects the water in the
tank.
2.2.4.4.1 Water full alarm will be on when the unit
is standing by or operating.
2.2.4.4.2 When the water adds up to the first
position on the chassis, the pump will be
activated. If the water drops down through
the position, the pump will be on and stop
after 2 minutes.
2.2.4.4.3 When the water adds up to the position
on the tank, the compressor, outdoor fan
motor, electric heater and pump will stop
operation. And the LED will display “P1” while
the water full lamp flashes at 2Hz.
2.2.4.4.4 When the water adds up to the second
position on the chassis and the switch has
been on for 10 seconds, the whole unit will
stop operation. The LED will display “P2” and
the water full lamp will flash at 5Hz. After you
have clear the problem, you should unplug
the unit and plug again. Then the unit will be
ready to operate.
2.2.4.4.5 When the unit is standing by, if the unit
displays “P1”, the pump will not operate. After
the problem is cleared, the unit will be ready
to operate. But if you push the power button,
the unit will shut the “P1” display and shut
down.
2.2.5 Fan-only Mode Function Requirement
2.2.5.1 The compressor and outdoor fan are OFF
at Fan-only mode.
2.2.5.2 The speed of indoor fan can be optionally
chosen as High/Mid/Low.
2.2.6 Cooling Mode Function Requirement
2.2.6.1 The speed of indoor fan can be optionally
selected as High/Mid/Low.
2.2.6.2 The compressor operate as:
O
C
room temperature (TA)
TS+1
TS
Comp ressor ON
Temp down
Temp up
Compressor OFF
2.2.7 Drying mode
2.2.7.1 When the unit starts to operate in Drying
mode, the compressor will start while the
room temperature is over 13
o
C. After the
compressor started, the compressor will
operate as:
O
C
room temperature (TA)
13 C
o
Compressor and outdoor
fan ON
Temp down
Temp up
Compressor and
outdoor fan OFF
15 C
o
2.2.7.2 The indoor fan will operate with high
speed. The outdoor fan will operate with
compressor.
2.2.8 Heating mode
2.2.8.1 The speed of indoor fan can be optionally
chosen as High/Mid/Low.
2.2.8.2 Electric heater operate as :
O
C
room temperature (TA)
TS+1
TS
Electric heater OFF
Temp down
Temp up
Electric heater ON
2.2.9 Temperature display
2.2.9.1 The setting temperature will be displayed
in Cooling and Heating mode. The room
temperature will be displayed in Drying and
Fan only mode.
2.2.9.2 The setting temperature range is from
17
o
C to 30
o
C or 62
o
F to 88
o
F. The display
temperature range is from 10
o
C to 35
o
C or
48
o
F to 98
o
F. If the room temperature is lower
than 10
o
C or 48
o
F, the display will be 10
o
C or
48
o
F.
2.2.10 Timer Function
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