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4.Operation details
Remote controller:
The remote controller is not preset as Cooling Only Air Conditioner or Heat Pump by manufacturer.
Each time after the remote controller replace batteries or is energized, the arrowhead will flashes on
the front of Heat or Cool on LCD of the remote controller.
User can preset the remote controller depending on the air conditioner type you have purchased as
follows:
Press any button when the arrow head flashes on the front of Cool, Cooling Only is set.
Press anybutton when the arrow headflashes onthe frontof Heat, Heat Pump is set.
If you don’ t press any button within 10 seconds, the remote controller is preset as Heat Pump
automatically.
Note:
If the air conditioner you purchased is a Cooling Only one, but you preset the remote controller as Heat
Pump, it doesn’t bring any matter. But if the air conditioner you purchased is a Heat Pump one, and
you preset the remote controller as Cooling Only, then you CAN NOT preset the Heating operation
with the remote controller.
Electronic Controller
1. Safety Protection
(1) Time Delay for Safety protection
!3 minutes delay for compressor ---The compressor is ceased for 3minutes before restarting to
balance the pressure in the refrigeration cycle in order to protect the compressor.
!2 minutes delay for 4-way valve---The 4-way valve will be ceased for 2 minutes late after
compressor to prevent the refrigerant-gas abnormal noise when the HEATING
operation is
OFF or switch to the other operation mode.
(2) Discharge temperature protection
There is a temperature sensor on top of compressor, when temperature on top of
compressor
exceeded the limit, system control will shut down the compressor and the display board will
show the error code.
(3) Lower voltage protection
When AC voltage ≤158V and keep it for 10 seconds, unit will be shut down for protection.
(4) Over voltage protection
When AC voltage ≥260V, unit will be shut down and recover while AC≤255V.
(5) Over current protection
When the current of outdoor unit is overload, controller shut down the unit immediately and show
error code.
(6) Compressor abnormity protection
When compressor start on or in the process of running, if there is no feedback to controller or
load of compressor is abnormity, the air conditioner will shut down, and show error code.
(7) IPM module protection
IPM module has high temperature & over current protection itself, if there is signal feedback to
IPM, the outdoor unit will shut down, LED on outdoor PCB will show the error code.
