Gree TERRA09HP230V1A Installation, Service & Troubleshooting page 72

Troubleshooting 18,000/24,000 btuh Units, cont.
Malfunction
#
Name
Indoor
Display
Indoor ambient
temperature
9 F1
sensor is open/
short circuited
Overcurrent
protection of
10 P5
phase current
for compressor
Indoor evapora-
tor temperature
11
sensor is open/
short circuited
Outdoor ambi-
ent temperature
12
sensor is open/
short circuited
Outdoor con-
denser tem-
13 perature sensor
is open/short
circuited
Outdoor dis-
charge tem-
14 perature sensor
is open/short
circuited
72
Indoor Unit Display
Method
Display Method
(repeated every 5
Cool
o = Off
Indicator
n = Illuminated
« = Blink
Off 3S and
blink once
Off 3S and
o
blink 15 times
Off 3S and
F2
blink twice
Off 3S and
F3
o
blink 3 times
Off 3S and
F4
o
blink 4 times
Off 3S and
F5
blink 5 times
Outdoor Unit
seconds)
During cooling and drying
operation, indoor unit op-
erates while other loads will
stop, during heating opera-
tion, the complete unit will
stop operation.
During cooling and drying
operation, indoor unit op-
erates while other loads will
« o o
stop, during heating opera-
tion, the complete unit will
stop operation.
AC stops operation once
reaches the setting tem-
perature. Cooling, drying;
internal fan motor stops
operation while other loads
stop operation; heating: AC
stop operation
During cooling and drying
operating, compressor stops
while indoor fan operates;
o « n
During heating operation,
the complete unit will stop
operation.
During cooling and drying
operation, compressor stops
while indoor fan will operate;
o « o
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.
A/C Status
1. Loosening or bad
contact of indoor ambient
temp sensor and main-
board terminal; 2. Com-
ponents in mainboard fell
down leads short circuit;
3. Indoor ambient temp
sensor damaged (check
with sensor resistance
value chart); 4. Mainboard
damaged.
Refer to the malfunction
analysis (IPM protec-
tion, loss of synchronism
protection and overcurrent
protection of phase current
for compressor).
1. Loosening or bad con-
tact of indoor evaporator
temp sensor and main-
board terminal; 2. Com-
ponents on the mainboard
fall; 3. Indoor evaporator
temp sensor damaged; 4.
Mainboard damaged.
Outdoor temperature
sensor hasn't been con-
nected well or is damaged.
Please check it by referring
to the resistance table for
temperature sensor
Outdoor temperature
sensor hasn't been con-
nected well or is damaged.
Please check it by referring
to the resistance table for
temperature sensor
1. Outdoor temperature
sensor hasn't been con-
nected well or is damaged.
Please check it by referring
to the resistance table for
temperature sensor; 2. The
head of temperature sensor
hasn't been inserted into
the copper tube.
Possible Causes