Gree GWH09ACC-S6DBA1A Service Manual page 48

Service Manual
Malfunction
NO.
Name
Decrease
frequency
19 due to
high air
discharge
Limit/
decrease
20 frequency
due to
antifreezing
Voltage for
21 DC bus-bar
is too high
Voltage of
22 DC bus-bar
is too low
Compressor
Min
23
frequence in
test state
Compressor
rated
24
frequenc e in
test state
Compressor
maximum
25
frequence in
test state
Installation and Maintenance
Display Method of Indoor Unit
Indicator Display (during
blinking, ON 0.5s and OFF
Dual-8
0.5s)
Code
Display
Operation Cool Heating
Indicator Indicator Indicator
F9
FH
PH
PL
P0
P1
P2
A/C status
Overload or temperature is too
All loads operate normally,
high;
while
operation frequency for
Malfunction of electric expansion
compressor is decreased
valve (EKV)
All loads operate normally,
Poor air-return in indoor unit or fan
while operation frequency for
speed is too low
compressor is decreased
1. Measure the voltage of position
L and N on wiring board (XT), if the
During cooling and drying voltage is higher than 265VAC, turn
on the unit after the supply voltage
operation, compressor will stop
is increased to the normal range.
while indoor fan will operate;
2.If the AC input is normal,
During heating operation, the
measure the voltage of electrolytic
complete unit will stop
capacitor C on control panel (AP1),
operation. 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
During cooling and drying
voltage is increased to the normal
operation, compressor will stop
range.
while indoor fan will operate;
2.If the AC input is normal,
During heating operation, the
measure the voltage of electrolytic
complete unit will stop
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
Possible Causes
45