Gree TERRA09HP230V1A Installation, Service & Troubleshooting page 73

Troubleshooting 18,000/24,000 btuh Units, cont.
Indoor Unit Display
Malfunction
#
Name
Indoor
Display
Limit/decrease
15 frequency due F6
to overload
Decrease fre-
16 quency due to F8
overcurrent
Decrease
frequency due
17 F9
to high air dis-
charge
Voltage for DC
18 bus-bar is too PH
high
Malfunction of
complete units
19 U5
current detec-
tion
Outdoor Unit
Method
Display Method
(repeated every 5
seconds)
o = Off
Cool Indicator
n = Illuminated
« = Blink
Off 3S and
n o
blink 6 times
Off 3S and
n n
blink 8 times
Off 3S and
n n
blink 9 times
Off 3S and
o n
blink 11 times
Off 3S and
o n
blink 13 times
A/C Status
All loads operate normally,
while operation frequency
« «
for compressor is decreased.
All loads operate normally,
while operation frequency
o n
for compressor is decreased.
All loads operate normally,
while operation frequency
for compressor is decreased.
o o
During cooling and drying
operation, compressor will
stop while indoor fan will
operate. During heating
operation, the complete unit
will stop operation.
o
During cooling and drying
operation, compressor will
stop while indoor fan will
« n
operate. During heating
operation, the complete unit
will stop operation.
Possible Causes
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)
1. Measure the voltage of
position L and N on wiring
board (XT), if the voltage
is high 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)
Theres circuit malfunction
on outdoor units control
panel AP1, please replace
the outdoor units control
panel AP1.
73