Gree GWH09ACC-K6DNA1F/I Service Manual page 57

Outdoor ambient
temperature sensor is F3
open/short circuited
Outdoor condenser
temperature sensor is F4
open/short circuited
Outdoor discharge
temperature sensor is F5
open/short circuited
Limit/decrease
frequency due to F6
overload
Decrease frequency
F8
due to overcurrent
Decrease frequency
due to high air F9
discharge
Limit/decrease
frequency due to FH
antifreezing
Voltage for DC bus-
PH
bar is too high
Voltage of DC bus-bar
PL
is too low
Compressor Min
P0
frequence in test state
Compressor rated
P1
frequence in test state
Compressor maximum
P2
frequence in test state
Compressor
intermediate P3
frequence in test state
Overcurrent protection
of phase current for P5
compressor
Charging malfunction
of capacitor PU
54
During cooling and drying operating,
compressor stops while indoor fan
operates; During heating operation, the
complete unit will stop operation
During cooling and drying operation,
compressor stops while indoor fan will
operate; During heating operation, the
complete unit will stop operation.
During cooling and drying operation,
compressor will sop after operating for
about 3 mins, while indoor fan will operate;
During heating operation, the complete unit
will stop after operating for about 3 mins.
All loads operate normally, while operation
frequency for compressor is decreased
All loads operate normally, while operation
frequency for compressor is decreased
All loads operate normally, while operation
frequency for compressor is decreased
All loads operate normally, while operation
frequency for compressor is decreased
During cooling and drying operation,
compressor will stop while indoor fan will
operate; During heating operation, the
complete unit will stop operation.
During cooling and drying operation,
compressor will stop while indoor fan will
operate;
During heating operation, the complete
unit will stop
During cooling and drying operation,
compressor will stop while indoor fan will
operate;
During heating operation, the complete
unit will stop operation.
During cooling and drying operation,
compressor will stop while indoor fan will
operate;
During heating operation, the complete
unit will stop
Outdoor temperature sensor hasnt been connected well or is
damaged. Please check it by referring to the resistance table
for temperature sensor)
Outdoor temperature sensor hasnt been connected well or is
damaged. Please check it by referring to the resistance table
for temperature sensor)
1.Outdoor temperature sensor hasnt been connected well
or is damaged. Please check it by referring to the resistance
table for temperature sensor)
2.The head of temperature sensor hasnt been inserted into
the copper tube
Refer to the malfunction analysis (overload, high temperature
resistant)
The input supply voltage is too low; System pressure is too
high and overload
Overload or temperature is too high; Refrigerant is
insufficient; Malfunction of electric expansion valve (EKV)
Poor air-return in indoor unit or fan speed is too low
1. Measure the voltage of position L and N on wiring board
(XT), if the voltage is higher than 265VAC, turn on the unit
after the supply voltage is increased to the normal range.
2.If the AC input is normal, measure the voltage of electrolytic
capacitor C on control panel (AP1), if its normal, theres
malfunction for the circuit, please replace the control panel
(AP1)
1. Measure the voltage of position L and N on wiring board
(XT), if the voltage is higher than 150VAC, turn on the unit
after the supply voltage is increased to the normal range.
2.If the AC input is normal, measure the voltage of electrolytic
capacitor C on control panel (AP1), if its normal, theres
malfunction for the circuit, please replace the control panel
(AP1)
Showing during min. cooling or min. heating test
Showing during nominal cooling or nominal heating test
Showing during max. cooling or max. heating test
Showing during middle cooling or middle heating test
Refer to the malfunction analysis (IPM protection, loss of
synchronism protection and overcurrent protection of phase
current for compressor.
Refer to the part three—charging malfunction analysis of
capacitor
Installation and Maintenance