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Technical Information
Service Manual
6.4 Brief Description of Modes and Functions
1. This controller design has the following functions:
(1) Auto; (2) Cool (3) Dry; (4) Fan; (5) Heat;
2. Targets of controller control:
(1) Indoor fan:
Cooling mode: totally 7 fan speeds (including quiet, fan speed 1, fan speed 2, fan speed 3, fan speed 4, fan speed 5 and turbo);
Heating mode: totally 7 fan speeds (including quiet, fan speed 1, fan speed 2, fan speed 3, fan speed 4, fan speed 5 and turbo);
Fan mode: totally 5 fan speeds (including fan speed 1, fan speed 2, fan speed 3, fan speed 4 and fan speed 5);
Dry mode: totally 1 fan speed (fan speed 1);
Auto mode: totally 5 fan speeds (including fan speed 1, fan speed 2, fan speed 3, fan speed 4 and fan speed 5);
(2) Up&down swing step motor;
(3) Swing mechanisam step motor;
(4) Left&right swing step motor;
(5) Normal buzzer;
(6) Indoor display board;
(7) WiFi module;
(8) I Sense module (only for the model with I Sense function);
3. Basic functions of the system:
(1) Cooling mode:
①
Cooling conditions and process (for the inverter model, please refer to the instructions of outdoor unit);
②
Protection Functions (for the inverter model, please refer to the instructions of outdoor unit).
(2) Dry mode:
①
Dry conditions and process (for the inverter model, please refer to the instructions of outdoor unit);
②
Protection Functions (for the inverter model, please refer to the instructions of outdoor unit).
(3) Heating mode (not available for cooling only unit):
①
Heating conditions and process (for the inverter model, please refer to the instructions of outdoor unit);
②
Defrosting conditions and process (indoor unit control, for the inverter model, please refer to the instructions of outdoor unit)
Normal intelligent defrosting, automatically defrost according to the defrosting situation with power indicator on (on for 10s and off for
0.5s with blinking circulation display).
③
Protection functions (for the inverter model, please refer to the instructions of outdoor unit).
(4) Fan mode:
Under this mode, indoor fan motor operates according to the set fan speed. The compressor, outdoor fan, 4-way valve and electric
heating tube stop operation. Under this mode, temperature setting range is 16~30
℃
. The display displays operation icon and set
temperature.
(5) Auto mode:
Under this mode, the system will select its operation mode (cooling, heating or fan) automatically according to the change of ambient
temperature. The display displays set temperature. There is 30s delay protection for mode switching. Protection functions are the same
as those in any other mode.
4. Display status of indoor indicator
(1) Status of IDU display board
①
During energizing, the display board are all on and then only the power indicator is on. When during on the unit by remote control,
the power indicator is off and only current set temperature is displayed.
②
During defrosting, the power indicator blinks in every 10s interval.
③
Under auto mode, the nixie tube displays set temperature.
5. Other controls
(1) Timer function:
Timer on: timer on can be set under unit off status. If selected on time is reached, the controller will run according to previous setting
status. Timer interval is timer off: under unit on status, timer off can be set under unit on status. If selected off time is reached, the unit
will stop. Time setting range is 0.5
～
24hr in 30-minute increments.
(2) Auto button:
If this button is pressed, the unit will operate in auto mode and IDU fan will operate at auto speed; meanwhile, the swing motor
operates. Press this button again to turn off the unit. It is valid only within 5min after energizing.
(3) Buzzer:
When the controller is energized or receives any command or signal from the buttons or the remote controller, the buzzer will give out
●
Indoor Unit
