Introduction Of Basic Mode Function - Gree GDN10AH-K4EBB1C Service Manual

Service Manual

6.2 Introduction of Basic Mode Function

1. Basic Function
1) Dry conditions and process
a. When HUMIDITYpreset≤HUMIDITYamb.-5%, compressor and fan will run.
b. When HUMIDITYpreset≥HUMIDITYamb.+5%, compressor stop to run and fan will stop operation after 3min.
c. When DEHUMITYamb.-5%<HUMIDITYpreset<HUMIDITYamb.+5%, when compressor is operation, it will run with condition a; when
compressor stops, it will run with condition b. If under this condition when the unit is on, the compressor is off and fan will stop to run
after 3min delay.
2) Humidity Range
a. 5% is one step, it can be adjusted continuously from CO, 35%-80% (CO stands for dehumidify continuously).
b. Adjust preset temperature by "+" and "-".
2. Protection Function
(1) Working temperature range
a. Detect the unit after energized, when 2 ℃ ≤Tamb. ≤45 ℃ , the unit is running normally; when Tamb. <2 ℃ or Tamb.> 45 ℃ , the
compressor stops, and fan will run with the detected temperature humidity;
b. During operation, when Tamb. <2℃ or Tamb.> 45℃ , the compressor stops, and fan will run with the detected temperature humidity;
when 2℃ ≤Tamb. ≤45℃ , the compressor will be started up.
(2) Compressor Protection
a. After energization, under any situation and after compressor stops, it will restart 3min delay at least.
b. Under operation state except temperature sensor malfunction, on/off button, water-blow protection, after compressor starts up, it will
stop after it runs for 3min at least.
(3) Detection for temperature sensor malfunction (Temperature sensor malfunction is AD value≤5 or 250≤AD value)
a. When the unit is energized, it is detected that the ambient temperature sensor is open or short circuit for 30s, compressor and fan
stops, LED indicator is off, buttons are invalid, and nixie tube displays "F1".
b. It is detected that the pipe temperature sensor is open or short circuit for 30s, compressor and fan stops, LED indicator is off, buttons
are invalid, and nixie tube displays "F2".
c. When it detected that the humidity sensor is short-circuited for 30s successively, compressor and fan will stop operation. Meanwhile,
LED will be off, buttons are invalid and dual-8 nixie tube will display L1.
d. When theres multiple malfunctions, the error codes will be displayed in turn.
(4) Water blow protection (off switch)
a. The water blow protection will be occurred when the water level of water tank is exceeded. After water blow protection, compressor
stops and fan stops after 3mins. If water blow protection occurred for 3min, the buzzer will stop after it gives out a beep for 10s,
indicator of water blow will blinks and all the buttons are invalid. When the water level or assembly of water tank resume to normal,
signal of water blow protection will cancelled, indicator is off, buzzer stops to give out a beep and resume to normal operation state.
b. When the unit is off, water blow protection is occurred, water blow indicator blinks, compressor and fan stops, all the buttons are
invalid except on/off buttons. When the unit is on, water blow indicator blinks, buzzer will not give out a beep, compressor and fan
stops.
3. Other Functions
(1) Power-off memory
Upon power failure, the unit after power recovery will automatically start to run according to memory content.
(2) Nixie tube display
a. When the unit is running, it will display current humidity, preset temperature will be adjusted by "+" or "-", it will resume current
humidity after the set is finished for 5s.
b. Under any situation and the temperature sensor is malfunction, nixie tube displays "F1" , "F2" or "L1", timer lamp,
continuous humidity lamp, fan speed lamp and filter lamp will not display.
(3) Front panel button
On/off : turn on/off the unit
Timer: use for timer setting
+: Adjust humidity
-: Adjust humidity
Fan speed: adjust fan speed
Filter: adjust filter function
(4) LED indicator
Continuous humidity lamp: "CON" lamp is on, nixie tube display "CO";
Power supply indicator: it is on after the unit is energized;
2H timer lamp: the lamp is on after setting 2H timer;
4H timer lamp: the lamp is on after setting 4H timer;
High fan speed indicator: the lamp is on after setting fan is in high speed.
Med fan speed indicator: the lamp is on after setting fan is in med speed.
Low fan speed indicator: the lamp is on after setting fan is in low speed.
Installation and Maintenance
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