Mitsubishi SCM100ZJ-S1, Руководство по обслуживанию

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'11 • SCM-SM-110
When a heat exchanger sensor 1 wire disconnection is detected while
operation is stopped. (If a temperature of –28ºC or lower is detected for
15 seconds, it is judged that the wire is disconnected.)
(Not displayed during operation.)
When a room temperature sensor wire disconnection is detected while
operation is stopped. (If a temperature of –45ºC or lower is detected for
15 seconds, it is judged that the wire is disconnected.)
(Not displayed during operation.)
• Broken heat exchanger sensor
1 wire, poor connector
connection
• Indoor PCB is faulty
• Broken room temperature
sensor wire, poor connector
connection
• Indoor PCB is faulty
Heat exchanger
sensor 1 error
Room
temperature
sensor error
When conditions for turning the indoor unit’s fan motor on exist during air
conditioner operation, an indoor unit fan motor speed of 300 (SRF : 150) rpm
or lower is measured for30 seconds or longer. (The air conditioner stops.)
• Defective fan motor, poor
connector connection
Indoor fan
motor error
–55ºC or lower is detected for 5 seconds continuously 3 times within
40 minutes after initial detection of this anomalous temperature.
Or –55ºC or higher is detected for within 20 seconds after power ON.
(The compressor is stopped.)
–55ºC or lower is detected for 5 seconds continuously 3 times within
40 minutes after initial detection of this anomalous temperature.
Or –55ºC or higher is detected for within 20 seconds after power ON.
(The compressor is stopped.)
• Broken heat exchanger sensor
wire, poor connector
connection
• Outdoor main PCB is faulty
Outdoor heat
exchanger
sensor error
–25ºC or lower is detected for 5 seconds continuously 3 times within 40
minutes after initial detection of this anomalous temperature.
(The compressor is stopped.)
• Broken discharge pipe sensor
wire, poor connector
connection
• Outdoor main PCB is faulty
Discharge pipe
sensor error
The compressor output current exceeds the set value during compressor
start.
(The air conditioner stops.)
• Compressor locking, open phase
on compressor output, short
circuit on power transistor,
service valve is closed
Current cut
Outdoor suction
pipe sensor error
• Broken suction pipe sensor wire,
poor connector connection
• Outdoor sub PCB is faulty
–55ºC or lower is detected for 5 seconds continuously 3 times within 40
minutes after initial detection of this anomalous temperature.
Or –55ºC or higher is detected for within 20 seconds after power ON.
(The compressor is stopped)
When there is an emergency stop caused by trouble in the outdoor unit,
or the input current value is found to be lower than the set value.
(The air conditioner stops.)
When power transistor anomaly is detected for 15 minutes continuosly
(The compressor is stopped.)
• Broken compressor wire
• Compressor blockage
Trouble of
outdoor unit
When the value of the discharge pipe sensor exceeds the set value.
(The air conditioner stops.)
• Gas shortage, defective
discharge pipe sensor, service
valve is closed
Over heat of
compressor
When there is no signal between the indoor PCB and outdoor PCB for
10 seconds or longer (when the power is turned on), or when there is no
signal for 7 minute 35 seconds or longer (during operation)(the
compressor is stopped).
• Defective power supply,
Broken signal wire, defective
indoor/outdoor sub PCB
Error of signal
transmission
• Service valve is closed.
• Refrigerant is insufficient
Outdoor sub PCB
communication
error
• Outdoor sub PCB fauly
• Poor connection of wire between
outdoor sub PCB – main PCB
Communication error for 15 minutes: Detected more than 15 seconds
4 times.
Limit switch
error
• Defective limit switch
• Defective suction panel set
• Defective indoor control PCB
Actuation limit switch
When the outdoor unit’s fan motor speed continues for 30 seconds or
longer at 75 rpm or lower. (3 times) (The air conditioner stops.)
• Defective fan motor, poor
connector connection
Outdoor fan
motor error
Indoor unit display panel
Description
of trouble
Cause Display (flashing) condition
The wired remote controller wire Y is open. The wired remote
controller wires X and Y are reversely connected. Noise is penetrating
the wired remote controller lines. The wired remote controller or indoor
PCB is faulty. (The communications circuit is faulty.)
• Broken wired remote controller
wire, defective indoor PCB
• Broken high pressure sensor
wire
Error of wired
remote controller
wiring
• Outdoor inverter PCB is faulty
• Outdoor controol PCB is faulty
• Outdoor fan motor is faulty
Inverter and
fan motor
anomaly
When a heat exchanger sensor 2 wire disconnection is detected while
operation is stopped. (If a temperature of –28ºC or lower is detected for
15 seconds, it is judged that the wire is disconnected.)
(Not displayed during operation.)
If the float switch OPEN is defected for 3 seconds continuously or if
float switch connector or wire is disconnected.
• Broken heat exchanger sensor
2 wire, poor connector
connection
• Indoor PCB is faulty
• Defective drain pump (DM),
broken drain pump wire
•Anomalousfloat s witchoperation
• Defective indoor PCB faulty
Heat exchanger
sensor 2 error
Drain
trouble
(3)
When anomalous rise of the high pressure sensor is detected 5 times
within 1 hour.
When high pressure sensor anomaly is detected for 10 minutes
continuously.
• Overload operation, overcharge
• Broken high pressure sensor
wire
• Service valve is closed
When anomalous rise of the high pressure sensor is detected 5 times
within 1 hour.
When high pressure sensor anomaly is detected for 10 minutes
continuously.
• Overload operation, overcharge
• Broken high pressure sensor
wire
• Service valve is closed
Cooling high
pressure
protection
Heating high
pressure
protection
When refrigeration cycle system protective control operates.
Refrigeration
cycle system
protective
control
ON
ON
ON
1 time
flash
5 times
flash
6 times
flash
7 times
flash
TIMER
light
—
4 times
flash
2 times
flash
ON
ON
ON
6 times
flash
ON
ON
ON
ON
ON
RUN
light
—
— —
— —
ON
3 times
flash
4 times
flash
ON
7 times
flash
E 16
E 9
• Broken outdoor air temp.
sensor wire, poor connector
connection
• Outdoor main PCB is faulty
Outdoor air
temperature
sensor error
Keeps
flashing
Keeps
flashing
Keeps
flashing
Keeps
flashing
Keeps
flashing
Keeps
flashing
E 38
E 37
E 39
E 53
E 42
E 59
E 36
E 5
E 48
E 35
E 1
E 51
Wired
(2)
remote
controller
display
E 57
E 45
—
—
—
Notes (1) The air conditioner cannot be restarted using the remote controller for 3 minutes after operation stops.
(2) The wired remote controller is optional parts.
(3) SRR series only.
Stays
OFF
Stays
OFF
Stays
OFF
Stays
OFF
Stays
OFF
8 times
flash
8 times
flash
8 times
flash
8 times
flash
5 times
flash
4 times
flash
2 times
flash
1 time
flash
2 times
flash
1 time
flash
5 times
flash
6 times
flash
Keeps
flashing
2 times
flash
2 times
flash
4 times
flash
Power transistor
error
• Power transistor overheat
When anomalous rise of the power transistor temperature is detected
2 times within 1 hour.
— — E 41
1 time
flash
— —
E 40
2 times
flash
High pressure
sensor error
If the detected for 5 second continuously within 2 minutes to 2 minutes
and 20 seconds after the compressor ON, the compressor stops.
— —
E 54
8 times
flash
Outdoor
main PCB
Red LED
Stays
OFF
Stays
OFF
1 time
flash
2 times
flash
1 time
flash
(ii) SCM100,125