Mitsubishi SRK50ZHX-S Technical Manual page 39

(c) Error code, stop code table (Assignment of error codes and stop codes is done in common for all models.)
Number of flashes when in
service mode
Stop coad
or
RUN TIMER
Error coad
light light
(10's digit) (1's digit)
OFF OFF 0 Normal
5 time 05
Can not receive signals for 35
flash
seconds
(if communications have recovered)
3 time 5 time 35
Cooling high pressure control
flash flash
6 time 36
Compressor overheat
flash
(115˚C)
7 time 37
Outdoor heat exchanger sensor
flash
is abnormal
8 time 38
Outdoor air temperature sensor
flash
is abnormal
9 time 39
Discharge pipe sensor is
flash
abnormal (anomalous stop)
4 time 2 time 42
Current cut
flash flash
7 time 47
Active filter voltage error
flash
48
8 time
Outdoor unit's fan motor is
flash
abnormal
5 time 1 time 51
Short circuit in the power
flash flash transistor (high side)
Current cut circuit breakdown
57
7 time
Refrigeration cycle system
flash
protective control
8 time 58
Current safe
flash
59
9 time
Compressor wiring is unconnection
flash
Voltage drop
Low speed protective control
6 time OFF 60
Rotor lock
flash
1 time 61
Connection lines between the
flash
indoor and outdoor units are
faulty
2 time 62
Serial transmission error
flash
8 time OFF 80
Indoor unit's fan motor is
flash
abnormal
2 time 82
Indoor heat exchanger sensor
flash
is abnormal (anomalous stop)
4 time 84
Anti-condensation control
flash
5 time 85
Anti-frost control
flash
6 time 86
Heating high pressure control
flash
Error content
-
Power supply is faulty.
Power supply cables and signal lines are improperly wired.
Indoor or outdoor unit circuit boards 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 air temperature sensor wire is
disconnected.
Connector connections are poor.
Discharge pipe sensor wire is
disconnected.
Connector connections are poor.
Compressor lock.
Compressor wiring short circuit.
Compressor output is open phase.
Outdoor unit's circuit board 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's circuit board is faulty.
Outdoor unit's circuit board 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 supply construction is defective.
Outdoor unit's circuit board is faulty.
Compressor is faulty.
Compressor output is open phase.
Electronic expansion valve is faulty.
Overload operation.
Outdoor unit's circuit board is faulty.
Connection lines are faulty.
Indoor or outdoor unit circuit boards
are faulty.
Indoor or outdoor unit circuit boards
are faulty.
Noise is causing faulty operation.
Indoor fan motor is faulty.
Connector connections are poor.
Indoor unit's circuit board 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.
-
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.
When a temperature of
seconds while the power is turned on or after the outdoor unit's speed
has continued at 0rps or higher for 2 minutes (the compressor stops).
When a temperature of
seconds while the power is turned on or after the outdoor unit's speed
has continued at 0rps or higher for 2 minutes (the compressor stops).
When a temperature of
seconds after the outdoor unit's speed has continued at 0rps or higher
for 10 minutes (the compressor stops).
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 supply.
When the outdoor control PCB is faulty.
When a fan speed of 75 rpm or lower continues for 30
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 supply voltage drops during operation.
When the outdoor unit's speed is lower than 26 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 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 rpm or lower speed with the fan motor in the ON
condition while the air conditioner is running.
When a temperature of
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.
36
-
Occurrence conditions
–
55˚C or lower is sensed continuously for 20
–
55˚C or lower is sensed continuously for 20
–
25˚C or lower is sensed continuously for 20
–
28˚C or lower is sensed
Error Auto
display recovery
(5 times)
(2 times)
(3 times)
(3 times)
(3 times)
(2 times)
(3 times)
(2 times)