Introduction Of Basic Mode Function - Gree GDN12AJ-K4EBC1A Service Manual

Service Manual

6.2 Introduction of Basic Mode Function

1. Basic functions of system
(1) Drying mode
① Dry conditions and process: under operation status
a. When set humifity≤ambient humidity-5%, compressor and fan will operate.
b. When set humidity≥ambient humidity+5%, compressor stop operation and fan will stop operation after 3min.
c. When ambient humidity-5%<set humidity<ambient humidity+5%, if compressor is operating, and it will operation with condition a; if
compressor stops operation, it will operate with condition b.
② Humidity Range
a. 5% is the first notch. It can be adjusted continuously from CO, 35%-80% (CO stands for dehumidify continuously).
b. Adjust set humidity by "+" and "-" buttons.
2. Protection Function
(1) Compressor Protection
After energization, under any situation and after compressor stops, it will restart 3min delay at least.
Under operation state except there's malfunction of temperature sensor , when turn off unit by on/off button, water-blow protection,
or after compress is starts up, the compressor will stop operation after it operates for 3min at least.
(2) Detection for temperature sensor malfunction
When there's malfunction for temperature sensor, compressor and fan stop operation. LED indicator is OFF and buttons are invalid.
Nixie tube displays F2. After the temperature is resumed normally, restart the unit.
(3) Bucket full protection (off switch)
Under operation status, if there's bucket full protection or the water tank hasn't been installed well, compressor stop operation and
the fan also stop operation after the fan operates continously for 3min. If water blow protection occurred for 3min, the buzzer will
stop after it gives out a beep for 10s.Indicator of bucket full blinks and all the buttons are invalid except on/off button. When the water
level or assembly of water tank resume to normal, signal of bucket full protection will cancelled. Indicator is off, buzzer stops to give
out a beep and the fan resumes to normal operation state. Compressor resumes to operation normally after 3mins. When the unit is
off, bucket full protection is occurred, water blow indicator blinks, compressor and fan stop operation, and all the buttons are invalid
except on/off button.
(4) Freeze protection
If freeze protection is detected during operation, compressor stops operation, fan operates at compulsory high speed and the fan
speed buttons are invalid. When freeze protection is completed, fan speed button are valid, fan operates at set status and the
compressor can be restarted up after stopping for 3 minutes.
3. Other Functions
(1) Buttons on front panel
Timer button: use for timer setting
Fan speed button: adjust fan speed
+/- button : adjust humidity
Filter button: adjust filter function
Power button: turn on or turn off unit
(2) LED indicator
2H timer indicator: the indicator is on after setting 2H timer;
4H timer indicator: the indicator is on after setting 4H timer;
High fan speed indicator: the indicator is on after the fan is set at high fan speed;
Low fan speed indicator: the indicator is on after the fan is set at low fan speed;
CONTINUOUS indicator: After continue humidifying is set, continue humidifying indicator is on;
FILTER RESET indicator: the indicator is on when the operation time of fan reaches to 250h totally. After filter is cleaned, press
Technical Information
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