Gree GWH09ACC-K6DNA1F/I Service Manual page 62

Outdoor ambient
temperature sensor is
open/short circuited
Outdoor condenser
temperature sensor is
open/short circuited
Outdoor discharge
temperature sensor is
open/short circuited
Limit/decrease
frequency due to
overload
Decrease frequency
due to overcurrent
Decrease frequency
due to high air
discharge
Limit/decrease
frequency due to
antifreezing
Voltage for DC bus-
bar is too high
Voltage of DC bus-bar
is too low
Compressor Min
frequence in test state
Compressor rated
frequence in test state
Compressor maximum
frequence in test state
Compressor
intermediate
frequence in test state
Overcurrent protection
of phase current for
compressor
Charging malfunction
of capacitor
Installation and Maintenance
During cooling and drying operating,
compressor stops while indoor fan
F3
operates; During heating operation, the
complete unit will stop operation
During cooling and drying operation,
compressor stops while indoor fan will
F4
operate; During heating operation, the
complete unit will stop operation.
During cooling and drying operation,
compressor will sop after operating for
F5 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
F6
frequency for compressor is decreased
All loads operate normally, while operation
F8
frequency for compressor is decreased
All loads operate normally, while operation
F9
frequency for compressor is decreased
All loads operate normally, while operation
FH
frequency for compressor is decreased
During cooling and drying operation,
compressor will stop while indoor fan will
PH
operate; During heating operation, the
complete unit will stop operation.
During cooling and drying operation,
compressor will stop while indoor fan will
PL operate;
During heating operation, the complete
unit will stop
P0
P1
P2
P3
During cooling and drying operation,
compressor will stop while indoor fan will
P5 operate;
During heating operation, the complete
unit will stop operation.
During cooling and drying operation,
compressor will stop while indoor fan will
PU 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
59