Mitsubishi SRK25ZSP-W Service Manual page 24

(c) Error code, stop code table
Number of flashes when in
service mode
Stop coad
RUN TIMER or
light Error coad
light
(10's digit) (1's digit)
0 Normal
OFF
Can not receive signals for 35
OFF
5 time
05
seconds
flash
(if communications have recovered)
5 time
35 Cooling high pressure control
flash
6 time
36 Compressor overheat 110°C
flash
Outdoor heat exchanger sensor
7 time
37
is abnormal
3 time flash
flash
8 time Outdoor air temperature sensor
38
is abnormal
flash
Discharge pipe sensor is
9 time
39
abnormal (anomalous stop)
flash
2 time
42 Current cut
flash
4 time
flash
7 time
47 Active filter voltage error
flash
Outdoor unit's fan motor is
8 time
48
abnormal
flash
Short circuit in the power
1 time
transistor (high side)
51
flash
Current cut circuit breakdown
7 time
Refrigeration cycle system
57
flash
protective control
5 time
8 time
58 Current safe
flash
flash
Compressor wiring is unconnection
9 time
V oltage drop
59
flash
Low speed protective control
OFF 60 Rotor lock
6 time
Connection lines between the
flash
1 time
61 indoor and outdoor units are
flash
faulty
2 time
62 Serial transmission error
flash
Indoor unit's fan motor is
80
OFF
abnormal
Indoor heat exchanger sensor
2 time
82
is abnormal (anomalous stop)
flash
8 time
4 time
flash 84 Anti-condensation control
flash
5 time
85
Anti-frost control
flash
6 time
86 Heating high pressure control
flash
Error content Cause
Power source is faulty.
Power source cables and signal lines are improperly wired.
Indoor or outdoor unit PCB are faulty.
Cooling overload operation.
Outdoor unit fan speed drops.
Outdoor heat exchanger sensor is short circuit.
Refrigerant is insufficient.
Discharge pipe sensor is faulty.
Service valve is closed.
Outdoor heat exchanger sensor wire is
disconnected.
Connector connections are poor.
Outdoor unit PCB is faulty.
Outdoor air temperature sensor wire is
disconnected.
Connector connections are poor.
Outdoor PCB is faulty.
Discharge pipe sensor wire is
disconnected.
Connector connections are poor.
Outdoor unit PCB is faulty.
Compressor lock.
Compressor wiring short circuit.
Compressor output is open phase.
Outdoor unit PCB is faulty.
Service valve is closed.
Electronic expansion valve is faulty.
Compressor is faulty.
Defective active filter.
Outdoor fan motor is faulty.
Connector connections are poor.
Outdoor unit PCB is faulty.
Outdoor unit PCB is faulty.
Power transistor is damaged.
Service valve is closed.
Refrigerant is insufficient.
Refrigerant is overcharge.
Compressor lock.
Overload operation.
Compressor wiring is disconnected.
Power transistor is damaged.
Power source construction is defective.
Outdoor unit PCB is faulty.
Compressor is faulty.
Compressor is faulty.
Compressor output is open phase.
Electronic expansion valve is faulty.
Overload operation.
Outdoor unit PCB is faulty.
Connection lines are faulty.
Indoor or outdoor unit PCB are faulty.
Indoor or outdoor unit PCB are faulty.
Noise is causing faulty operation.
Indoor fan motor is faulty.
Connector connections are poor.
Indoor unit PCB is faulty.
Indoor heat exchanger sensor wire is
disconnected.
Connector connections are poor.
High humidity condition.
Humidity sensor is faulty.
Indoor unit fan speed drops.
Indoor heat exchanger sensor is broken wire.
Heating overload operation.
Indoor unit fan speed drops.
Indoor heat exchanger sensor is short-circuit.
22
-
Occurrence conditions
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 initial 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 initial 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 initial detection of this anomalous
temperature.
Compressor start fails 42 times in succession and the
reason for the final failure is current cut.
When the wrong voltage connected for the power source.
When the outdoor unit 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.
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.
When the compressor command speed is lower than 32
rps for 60 minutes.
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 minutes 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 min or lower speed with the fan motor in the ON
-1
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.
-
'09•SRK-DB-087D
'18 • SRK-SM-259
Error Auto
display recovery
(5 times)
(2 times)
(3 times)
(3 times)
(3 times)
(2 times)
or lower continues for 30
-1
(3 times)
(3 times)
(2 times)