Gree GWH09MB-K3DNA2K

33
Technical Information
Service Manual
F2: Indoor evaporator sensor start and short circuit (continuously measured failure in 30S)
F3: Outdoor ambient sensor start and short circuit (continuously measured failure in 30S)
F4: Outdoor condenser sensor start and short circuit (continuously measured failure in 30S, and dont measure within 10 minutes
after defrosted)
F5: Outdoor exhausting sensor start and short circuit (continuously measured failure in 30S after the compressor operated 3 minutes)
H3: Overload protection of compressor H5: Module protection
PH: High-voltage protection PL: Low-voltage protection
P1: Nominal cooling and heating P2: Maximum cooling and heating
P3: Medium cooling and heating P0: Minimum cooling and heating
(12) Drying Function
You may start or stop the drying function under the modes of cooling and dehumidify at the starting status (The modes of automatism,
heating and air supply do not have drying function). When you start the drying function, after stop the machine by pressing the switch
button, you should keep running the inner fans for 2 minutes under low air damper (The swing will operate as the former status within
2 minutes, cooling indicator is on for 0.5s and then off for 10s in drying and other load is stopped), then stop the entire machine;
When you stop the drying function, press the switch button will stop the machine directly. When you start the drying function,
operating the drying button will stop the inner fans and close the guide louver.
(13) Memory function when interrupting the power supply
Memory content: mode, swing function, light, set temperature and wind speed. After interrupted the power supply, the machine will
start when recovering the power according to the memory content automatically. If the last remote control command has not set
the timed function, the system will remember the last remote control command and operate according it. If the last remote control
command has set timed function and the power supply is interrupted before the timed time, the system will remember the timed
function of the last remote control command, the timed time will recounted form power on. If the last remote control command has
set timed function, the time is out and the system is start or stop according to the set time when the power supply is interrupted, the
system will remember the operation status before the power supply was interrupted, and do not carry out timed action; The timed
clock will not remembered.
(14)Electric heating band control of outdoor unit
①
Compressor electric heating band control:
a) Start condition: the compressor is in off status and the outdoor ambient temperature≤-5°C.
b) Stop condition: the band is off when either of the below condition is met:
1.
The compressor is in on status;
2.The compressor is in off status and the outdoor ambient temperature≥-5°C.
c) When outdoor ambient temperature sensor is in malfunction status, the electric heating band stops operation.
②
Condenser electric heating band control:
1.When Toutdoor ambient≤1°C, the electric heating band starts working;
2. When enter defrosting and defrosting is nished, the chassis electric heating band starts working for 3min as the compressor
starts. After the compressor starts for 3min and Toutdoor ambient≥3°C, the electric heating band stops operation.
3.When Toutdoor ambient≥3°C, the condenser electric heating band doesn’t work.
4.When 1°C<Toutdoor ambient<3°C, the condenser electric heating band keeps the previous status.
When outdoor ambient temperature sensor is in malfunction status, the electric heating band stops operation; the electric heating
band can work again after 2min of last stop.