SiMX042215E
Troubleshooting
Part 6 Service Diagnosis
77
Reference
4.16 High Pressure Control in Cooling
Error Code
F6
Method of Error
Detection
High-pressure control (operation halt, frequency drop, etc.) is activated in cooling mode if the
temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Error Decision
Conditions
The temperature sensed by the outdoor heat exchanger thermistor rises above
A
°C.
The error is cleared when the temperature drops below
B
°C.
Supposed
Causes
Installation space not large enough
Dirty outdoor heat exchanger
Defective outdoor fan motor
Defective stop valve
Defective electronic expansion valve or coil
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
Troubleshooting
Check No.01
Refer to P.90
A
(°C)
B
(°C)
12 class
62.5
55.5
18 class
63
55.5
24 class
60
55
(R2041
8
)
Caution
Replace the o
u
tdoor fan
motor.
Reconnect the connector or
fan motor lead
w
ires.
Replace the stop
v
al
v
e.
Replace the o
u
tdoor heat
exchanger thermistor.
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Replace the electronic
expansion
v
al
v
e or the coil.
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Change the installation
location or direction.
Clean the o
u
tdoor heat
exchanger.
Check the installation space.
N
G
OK
OK
N
G
N
G
OK
OK
OK
N
G
N
G
Check No. 19
Check the o
u
tdoor fan.
Check No. 18
Check the discharge
press
u
re.
Check No. 12
Check the electronic
expansion
v
al
v
e.
Check No. 17
Check the installation
condition.
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
Check No. 01
Check the o
u
tdoor heat
exchanger thermistor.
