M series
MULTI SYSTEM Inverter Heat Pump
MUL
TI
SYSTEMS
TROUBLESHOOTING
C-548
MXZ-3B/4B/5B
LED1(Red) LED2(Yellow)
Lighting
Twice
Outdoor power system
Lighting
3 times
Discharge temperature
thermistor
Outdoor heat exchanger
temperature thermistor
Defrost thermistor
Lighting
7 times
Nonvolatile memory data
Lighting
8 times
Current sensor
Lighting
11 times
Communication error
between P.C. boards
Lighting
12 times
Zero cross detecting
circuit
Abnormal point / Condition
A short circuit is detected in the thermistor during operation, or an open
circuit is detected in the thermistor after 5 minutes (in cooling) and 10
minutes (in heating) of compressor start-up.
A short circuit is detected in the thermistor during operation, or an open
circuit is detected in the thermistor after 5 minutes of compressor start-up.
Indication
Overcurrent protection stop is continuously performed three times
within 1 minute after the compressor gets started, or converter protection
stop or bus-bar voltage protection stop is continuously performed three
times within 3 minutes after start-up.
A short circuit is detected in the thermistor during operation, or an open
circuit is detected in the thermistor after 10 minutes of compressor start-up.
Condition
The nonvolatile memory data cannot be read properly.
Fin temperature
thermistor
P.C board temperature
thermistor
Lighting
4 times
Ambient temperature
thermistor
Current sensor protection stop is continuously performed twice.
Communication error occurs twice between the outdoor electronic control
P.C. board and power board for more than 10 seconds.
The protection stop of the zero cross detecting circuit is continuously
performed 10 times.
A short or open circuit is detected in the thermistor during operation.
A short or open circuit is detected in the thermistor during operation.
5 times
Lighting
IPM protection
Lock protection
3 times
Goes out
Discharge temperature
protection
Fin temperature
protection
P.C. board temperature
protection
High-pressure
protection
8 times
Goes out
Converter protection
Bus-bar voltage
protection (1)
Bus-bar voltage
protection (2)
13 times
Goes out
Outdoor fan motor
Lighting
8 times
Current sensor
protection
Lighting
11 times
Communication protection
between P.C. boards
Lighting
12 times
Zero cross detecting circuit
protection
Twice
Goes out
4 times
Goes out
5 times
Goes out
9 times
Goes out
Overcurrent is detected after 30 minutes of compressor start-up.
Overcurrent is detected within 30 minutes of compressor start-up.
The bus-bar voltage exceeds 400 V or falls to 200 V or below during
compressor operating.
The bus-bar voltage exceeds 400 V (
MXZ-3B54/3B68/4B71VA
)/
430 V (
MXZ-4B80/5B100VA
) or falls to 50 V or below during
compressor operating.
Discharge temperature exceeds 116°C during operation. Compressor can
restart if discharge temperature thermistor reads 100°C or less 3 minutes
later.
The fin temperature exceeds 89°C during operation.
The P.C. board temperature exceeds 87°C during operation.
High-pressure is detected with the high-pressure switch (HPS) during
operation. (
MXZ-3B68/4B71/4B80/5B100VA
)
Failure occurs continuously three times within 30 seconds after the fan
gets started.
A short or open circuit is detected in the current sensor during compressor
operating.
Communication error occurs between the outdoor electronic control P.C.
board and power board for more than 10 seconds.
Zero cross signal cannot be detected while the compressor is operating.
The outdoor heat exchanger temperature exceeds 70°C during cooling
or indoor gas pipe temperature exceeds 70°C during heating.
A failure is detected in the operation of the converter during operation.
Outdoor unit
does not
operate.
Lighting
Once
LEV for drain
The indoor unit detects any abnormality in the LEV for drain.
No.
1
2
3
4
5
6
7
9
8
10
11
12
13
14
15
16
17
18
19
Symptom
'Outdoor unit
stops and
restarts 3
minutes
later' is
repeated.
Содержание M-SERIES
Страница 6: ...M series C WALL MOUNTED ...
Страница 38: ...WALL MOUNTED Outdoor Unit M series WIRING DIAGRAM WALL MOUNTED C 36 MUH GD80VB OUTDOOR UNIT ...
Страница 39: ...WALL MOUNTED Outdoot Unit M series WIRING DIAGRAM WALL MOUNTED C 37 MUZ FD25VA MUZ FD35VA OUTDOOR UNIT ...
Страница 40: ...WALL MOUNTED Outdoor Unit M series WIRING DIAGRAM WALL MOUNTED C 38 OUTDOOR UNIT MUZ FD50VA ...
Страница 41: ...WALL MOUNTED Outdoot Unit M series WIRING DIAGRAM WALL MOUNTED C 39 MUZ FD25VABH MUZ FD35VABH OUTDOOR UNIT ...
Страница 42: ...WALL MOUNTED Outdoor Unit M series WIRING DIAGRAM WALL MOUNTED C 40 OUTDOOR UNIT MUZ FD50VABH ...
Страница 43: ...WALL MOUNTED Outdoot Unit M series WIRING DIAGRAM WALL MOUNTED C 41 MUZ GE25VA MUZ GE35VA OUTDOOR UNIT ...
Страница 44: ...WALL MOUNTED Outdoor Unit M series WIRING DIAGRAM WALL MOUNTED C 42 OUTDOOR UNIT MUZ GE25VAH MUZ GE35VAH ...
Страница 45: ...WALL MOUNTED Outdoot Unit M series WIRING DIAGRAM WALL MOUNTED C 43 MUZ GE42VA OUTDOOR UNIT ...
Страница 46: ...WALL MOUNTED Outdoor Unit M series WIRING DIAGRAM WALL MOUNTED C 44 MUZ GE42VAH OUTDOOR UNIT ...
Страница 47: ...WALL MOUNTED Outdoot Unit M series WIRING DIAGRAM WALL MOUNTED C 45 MUZ GE50VA OUTDOOR UNIT ...
Страница 48: ...WALL MOUNTED Outdoor Unit M series WIRING DIAGRAM WALL MOUNTED C 46 MUZ GE50VAH OUTDOOR UNIT ...
Страница 49: ...WALL MOUNTED Outdoot Unit M series WIRING DIAGRAM WALL MOUNTED C 47 OUTDOOR UNIT MUZ GE60VA MUZ GE71VA ...
Страница 50: ...WALL MOUNTED Outdoor Unit M series WIRING DIAGRAM WALL MOUNTED C 48 MUZ HC25VA OUTDOOR UNIT ...
Страница 51: ...WALL MOUNTED Outdoot Unit M series WIRING DIAGRAM WALL MOUNTED C 49 OUTDOOR UNIT MUZ HC35VA MUZ HC35VAB ...
Страница 192: ...WALL MOUNTED Inverter Heat Pump M series INSTALLATION PROCEDURE WALL MOUNTED C 190 ...
Страница 199: ...WALL MOUNTED MSC MS MSH Series M series C 197 OPERATION AND ACTUATOR CONTROL WALL MOUNTED MUH MUH ...
Страница 202: ...WALL MOUNTED MSC MS MSH Series M series C 200 OPERATION AND ACTUATOR CONTROL WALL MOUNTED MSH g TIMER OPERATION ...
Страница 271: ...FLOOR STANDING MFZ KA VA Series M series OPERATION FLOOR STANDING C 269 ...
Страница 272: ...FLOOR STANDING MFZ KA VA Series M series OPERATION FLOOR STANDING C 270 f i save OPERATION ...
Страница 274: ...FLOOR STANDING MFZ KA VA Series M series OPERATION FLOOR STANDING C 272 i EMERGENCY TEST OPERATION ...
Страница 289: ...CEILING CASSETTE Inverter Heat Pump M series INSTALLATION PROCEDURE CEILING CASSETTE C 287 ...
Страница 290: ...CEILING CASSETTE Inverter Heat Pump M series INSTALLATION PROCEDURE CEILING CASSETTE C 288 ...
Страница 292: ...CEILING CASSETTE Inverter Heat Pump M series INSTALLATION PROCEDURE CEILING CASSETTE C 290 ...
Страница 293: ...CEILING CASSETTE Inverter Heat Pump M series INSTALLATION PROCEDURE CEILING CASSETTE C 291 ...
Страница 294: ...CEILING CASSETTE Inverter Heat Pump M series INSTALLATION PROCEDURE CEILING CASSETTE C 292 ...
Страница 300: ...CEILING CASSETTE M series CEILING CASSETTE C 298 ...
Страница 496: ...M series C 494 MULTI SYSTEM Inverter Heat Pump MULTI SYSTEMS WIRING DIAGRAM OUTDOOR UNIT MXZ 3B54VA ...
Страница 497: ...M series C 495 MULTI SYSTEM Inverter Heat Pump MULTI SYSTEMS WIRING DIAGRAM OUTDOOR UNIT MXZ 3B68VA ...
Страница 498: ...M series C 496 MULTI SYSTEM Inverter Heat Pump MULTI SYSTEMS WIRING DIAGRAM OUTDOOR UNIT MXZ 4B71VA ...
Страница 499: ...M series C 497 MULTI SYSTEM Inverter Heat Pump MULTI SYSTEMS WIRING DIAGRAM OUTDOOR UNIT MXZ 4B80VA ...
Страница 500: ...M series C 498 MULTI SYSTEM Inverter Heat Pump MULTI SYSTEMS WIRING DIAGRAM OUTDOOR UNIT MXZ 5B100VA ...