Service manual

7.2.10 Setting of De-energization Memory Function (Fig. 7-11)
Under turn-off state, you may hold MODE button for 10 seconds to validate the memory of turn-on and
turn-off state after a power failure. 01 will be displayed in the temperature setting area, indicating that the
memory of turn-on and turn-off state after a power failure is activated. 02 indicates that the memory of
turn-on and turn-off state after a power failure is deactivated. Press ON/OFF button to save and exit the
setting.
7.2.11 Test Function (Fig. 7-12)
Under turn-off state, you may simultaneously press and hold “FAN”+“SLEEP” buttons for 10 seconds to
call out the test menu, in which case the TEST icon will be displayed. You may use MODE button to
adjust the setting and use “▲” or “▼” to set the actual value.
Setting of Environment Temperature Sensor
Under test state, use the MODE button to adjust the temperature setting to “01” (TEST icon on the left
side). The setting state is displayed in the environment temperature area (TEST icon on the right side).
Use “▲” and “▼” to adjust. You have two options:
① The indoor environment temperature is the environment temperature at the air intake (01
is displayed in environment temperature area).
② The indoor environment temperature is the environment temperature at the wired
controller (02 is displayed in environment temperature area)
The environment temperature sensor is factory defaulted at the air intake.
7.3 Display of Errors (Fig. 7-13)
When an error occurs in the system, the ERROR icon on the wired controller will blink and the error code
will be displayed as well. In case multiple errors occur in the system, the wired controller will display the
error codes cyclically. The first digit indicates the system number, but the system will not be displayed if
there is only one system. The last two digits are the error code. For example, Fig. 7-13 indicates that the
compressor of the system 1 is under low-pressure protection.
Definition of Error Code
Error Code Error Error Code Error
E0
Water pump error
F0
Error to the indoor environment sensor at
air intake
E1
Compress high-pressure protection
F1 Evaporator temperature sensor error
E2
Indoor antifreeze protection
F2 Condenser temperature sensor error
E3
Compressor low-pressure protection
F3 Outdoor Ambient Sensor error
E4
Compressor exhaust over-temperature
protection
F4 Exhaust temperature sensor error
E5
Compressor overload protection
F5
Error to the indoor environment sensor on
wired controller
E6
Communication error
EH Auxiliary heater error
E8
Indoor fan protection
EE Button locked (not error)
E9
Water-full protection
CC
This unit is put under remote control or
controlled by centralized controller, while the
wired controller operation is shielded (not error)
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