Gree GKH12K3BI, Service Manual

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7
U-MATCH Air
Conditioners
Service Manual
QSPEVDU
3 FUNCTION
Function Description
Memory function
when unit restart after power off, it will run on former status,
the mode and parameter are kept the same
Remote control function
wireless controller and remote controller can be opted, and the
maximum control distance of remote controller is 10m.
Timing function it can timing ON/ OFF separately, meanwhile, it can also can timing on circularly
Self-diagnosis with alarm function once unit has malfunction, the malfunction code will be indicated
Sleep function it can self control for saving energy in energy saving mode.
Automatic function
the fan of indoor unit can adjust fan speed automatically based on actual
demand when cooling or heating under automatic mode
Cool air proof function
the fan starts only when the temperature of indoor unit heat exchanger
is higher than indoor temperature under heating mode
Weekly Timer
Centralized Control and Week Timer Functions: The centralized controller and the
weekly timer are integrated in the same wire controller. The system has both the
centralized control and the week timing functions. Up to 16 sets of units can be
controlled simultaneously by the centralized controller (weekly timer). The weekly timing
function is able to realized four timing ON/OFF periods for any unit every day, so as
to achieve fully automatic operation. No timing control can be set for holidays.
High/low pressure protection
when suction pressure is too low or discharge pressure is too high,
compressor will stop and unit display malfunction code
Overload protection
compressor has its own overheat protection, once the temperature of compressor is higher than
allowable level, compressor will stop and only when temperature recovery, compressor restart
Over current protection
once the current of compressor is higher that normal level,
compressor will stop and unit display malfunction code
Discharge high
temperature protection
once the discharge temperature of compressor is higher than allowable
value, compressor will stop and unit display malfunction code
Reverse (open) phase protection once the phase sequence of power supply is incongruent or the phase is absent, unit can’t work
Anti-high temperature protection once the heat exchanger temperature of indoor unit is too high, compressor stop.
Timing ON/OFF display display and timing turn ON/OFF time (only with wired controller have this function)
Fan speed display display the speed (high, medium, low) of fan(only with wired controller have this function)
Function model display
cooling mode, dehumidifying mode, heating mode, fan mode
(only with wired controller have this function)
Testing display display testing mode(only with wired controller have this function)
Temperature display
display room temperature and set temperature (with wired
controller or remoter board have this function)