Table of Contents
Advertisement
(c) Error code, stop code table
Models SCM71, 80
Number of flashes when in
service mode
Stop code
RUN
TIMER
or
light
Error code
light
(10's digit)
(1's digit)
0
OFF
OFF
5-time
05
flash
5-time
35
flash
6-time
36
flash
7-time
37
3-time
flash
flash
8-time
38
flash
9-time
39
flash
2-time
42
flash
4-time
5-time
flash
45
flash
7-time
47
flash
8-time
48
flash
1-time
51
flash
3-time
53
flash
7-time
5-time
57
flash
flash
8-time
58
flash
9-time
59
flash
60
OFF
6-time
flash
1-time
61
flash
2-time
62
flash
80
OFF
2-time
82
flash
8-time
4-time
84
flash
flash
5-time
85
flash
6-time
86
flash
7-time
87
flash
Error content
Normal
Can not receive signals for 35
Power source is faulty.
seconds
Power source cables and signal lines are improperly wired.
Indoor or outdoor sub PCB are faulty
(if communications have recovered)
Cooling overload operation.
Cooling high pressure control
Outdoor unit fan speed drops.
Outdoor heat exchanger sensor is short circuit.
Refrigerant is insufficient.
Compressor overheat 115°C
Discharge pipe sensor is faulty.
Service valve is closed.
Outdoor heat exchanger sensor wire is
Outdoor heat exchanger sensor
disconnected.
is abnormal
Connector connections are poor.
Outdoor main PCB is faulty
Outdoor air temperature sensor wire is
Outdoor air temperature sensor
disconnected.
Connector connections are poor.
is abnormal
Outdoor main PCB is faulty
Discharge pipe sensor wire is
Discharge pipe sensor is
disconnected.
Connector connections are poor.
abnormal (anomalous stop)
Outdoor main PCB is faulty
Compressor lock.
Compressor wiring short circuit.
Compressor output is open phase.
Current cut
Outdoor main PCB is faulty
Service valve is closed.
Electronic expansion valve is faulty.
Compressor is faulty.
Outdoor sub PCB fauly.
Anomalous outdoor sub
Poor connection of wire between
PCB commuication
outdoor sub PCB-main PCB.
Active filter voltage error
Defective active filter.
Outdoor fan motor is faulty.
Outdoor unit's fan motor is
Connector connections are poor.
abnormal
Outdoor main PCB is faulty.
Short circuit in the power
Outdoor main PCB is faulty
transistor (high side)
Power transistor is damaged.
Current cut circuit breakdown
Suction pipe sensor wire is
disconnected.
Suction pipe sensor
Connector connections are poor.
is abnormal
Outdoor sub PCB is faulty.
Service valve is closed.
Refrigeration cycle system
Refrigerant is insufficient.
protective control
Refrigerant is overcharge.
Current safe
Compressor lock.
Overload operation.
Compressor wiring is disconnected.
Power transistor is damaged.
Compressor wiring is unconnection
Power source construction is defective.
V
oltage drop
Outdoor main PCB is faulty
Compressor is faulty
Compressor is faulty.
Compressor output is open phase.
Rotor lock
Electronic expansion valve is faulty.
Overload operation.
Outdoor main PCB is faulty
Connection lines between the
Connection lines are faulty.
indoor and outdoor units are
Indoor or outdoor sub PCB are faulty .
faulty
Indoor or outdoor sub PCB are faulty
Serial transmission error
Noise is causing faulty operation.
Indoor fan motor is faulty
Indoor unit's fan motor is
Connector connections are poor
abnormal
Indoor PCB is faulty
Indoor heat exchanger sensor wire is
Indoor heat exchanger sensor
disconnected.
is abnormal (anomalous stop)
Connector connections are poor
High humidity condition.
Anti-condensation control
Humidity sensor is faulty.
Indoor unit fan speed drops.
Anti-frost control
Indoor heat exchanger sensor is broken wire
Heating overload operation.
Heating high pressure control
Indoor unit fan speed drops.
Indoor heat exchanger sensor is short circuit.
Defective drain pump (DM).
broken drain pump wire
Drain trouble
Anomalous float switch operation
Defective indoor PCB faulty
-
Cause
When 35 seconds passes without
communications signals from either the outdoor unit or
.
the indoor unit being detected correctly.
When the outdoor heat exchanger sensor's value exceeds
the set value.
When the discharge pipe sensor's value exceeds the set
value.
–55°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after intial detection of this anomalous
temperature.
Or–55°C higher is detected for 5 seconds continuously
.
within 20 seconds after power ON.
–55°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after intial detection of this anomalous
temperature.
Or–55°C higher is detected for 5 seconds continuously
.
within 20 seconds after power ON.
–25°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after intial detection of this anomalous
temperature.
.
Compressor start fails 42 times in succession and the
.
reason for the final failure is current cut.
Communication error for 15 minutes: Detected more than
15 seconds 4 times.
When the wrong voltage connected for the power source.
When the outdoor main PCB is faulty.
When a fan speed of 75 min
seconds or longer.
.
When it is judged that the power transistor was
damaged at the time the compressor started.
–55°C or lower is detected for 5 seconds continuously 3 times
within 40 minutes after intial detection of this anomalous
temperature.
Or–55°C higher is detected for 5 seconds continuously
within 20 seconds after compressor ON.
When refrigeration cycle system protective control
operates.
When there is a current safe stop during operation.
.
When the current is 1A or less at the time the
.
compressor started.
.
When the power source voltage drops during operation.
.
After the compressor starts, when the compressor stops
due to rotor lock.
.
.
When 10 seconds passes after the power is turned on
without communications signals from the indoor or
outdoor unit being detected correctly.
When 7 minute 35 seconds passes without
.
communications signals from either the outdoor unit or
the indoor unit being detected correctly.
.
When the indoor unit's fan motor is detected to be running
.
at 300 (SRF : 150) min
.
in the ON condition while the air-conditioner is running.
When a temperature of –28°C or lower is sensed
continuously for 40 minutes during heating operation.
(the compressor stops).
.
Anti-condensation prevention control is operating.
When the anti-frost control operates and the compressor
stops during cooling operation.
.
When high pressure control operates during heating
operation and the compressor stops.
If the float switch OPEN is defected for 3 seconds
continuously or if float switch connector or wire
is disconnected.
209
-
'17 • SCM-T-225
Occurrence conditions
or lower continues for 30
-1
or lower speed with the fan motor
-1
Error
Auto
display
recovery
(5 times)
(2 times)
(3 times)
(3 times)
(3 times)
(2 times)
(3 times)
(3 times)
(3 times)
(2 times)
(4 times)
Hide quick links:
Advertisement
Table of Contents
