Mitsubishi Electric M-SERIES, Руководство пользователя

Страница: 164 / 586

WALL-MOUNTED Inverter Heat Pump
M series
TROUBLESHOOTING
W
ALL-
MOUNTED
C-162
Outdoor unit failure mode table
NOTE: Blinking patterns of this mode differ from the ones of "Troubleshooting check table".
w
OPERATION INDICATOR lamp
POWER lamp ( MSZ-FD )
Upper lamp ( MSZ-GE , MSZ-HC )
MUZ-FD25VA MUZ-GE25VA MUZ-GE42VA MUZ-GE60VA MUZ-HC25VA
MUZ-FD25VABH MUZ-GE25VAH MUZ-GE42VAH MUZ-GE71VA MUZ-HC35VA
MUZ-FD35VA MUZ-GE35VA MUZ-GE50VA MUZ-HC35VAB
MUZ-FD35VABH MUZ-GE35VAH MUZ-GE50VAH
Upper/Power
lamp of
OPERATION
INDICATOR
lamp
(Indoor unit)
Abnormal point
(Failure mode/protection)
LED indication
(Outdoor P.C. board)
Condition
Indoor/outdoor
unit failure
mode recall
function
Outdoor unit
failure mode
recall function
OFF None (Normal)
— — — —
2-time flash
2.5 seconds
OFF
Outdoor power system
—
Overcurrent protection stop is continuously performed 3 times
within 1 minute after the compressor gets started.
○ ○
3-time flash
2.5 seconds
OFF
Discharge temperature
thermistor
1-time flash every
2.5 seconds
Thermistor shorts or opens during compressor running.
○ ○
Defrost thermistor
Fin temperature thermistor 3-time flash
2.5 seconds OFF
P.C. board temperature
thermistor
4-time flash
2.5 seconds OFF
MSZ-FD, GE
Ambient temperature
thermistor
2-time flash
2.5 seconds OFF
Outdoor heat exchanger
temperature thermistor
—
4-time flash
2.5 seconds
OFF
Overcurrent 11-time flash
2.5 seconds OFF
Large current flows into intelligent power module.
—
○
Compressor synchronous
abnormality (Compressor
start-up failure protection)
12-time flash
2.5 seconds OFF
Waveform of compressor current is distorted.
—
○
5-time flash
2.5 seconds
OFF
Discharge temperature
—
Temperature of discharge temperature thermistor exceeds
116°C, compressor stops.
Compressor can restart if discharge temperature thermistor
reads 100°C or less 3 minutes later.
—
○
6-time flash
2.5 seconds
OFF
High pressure
—
Temperature of indoor coil thermistor exceeds 70°C in HEAT
mode. Temperature of defrost thermistor exceeds 70°C in
COOL mode.
—
○
7-time flash
2.5 seconds
OFF
Fin temperature/P.C. board
temperature
7-time flash
2.5 seconds OFF
Temperature of fin temperature thermistor on the inverter
P.C. board exceeds 75 °C ~80 °C ( MUZ-FD , MUZ-GE )/82°C
( MUZ-HC25 )/83°C ( MUZ-HC35 ), or temperature of P.C. board
temperature thermistor on the inverter P.C. board exceeds
70 °C~75 °C ( MUZ-FD , MUZ-GE )/81°C ( MUZ-HC25 )/85°C
( MUZ-HC35 ).
—
○
MSZ-FD, GE
8-time flash
2.5 seconds
OFF
Outdoor fan motor
—
Outdoor fan has stopped 3 times in a row within 30 seconds
after outdoor fan start-up.
—
○
9-time flash
2.5 seconds
OFF
Nonvolatile memory data 5-time flash
2.5 seconds OFF
Nonvolatile memory data cannot be read properly.
○ ○
MUZ-GE
Power module
6-time flash
2.5 seconds OFF
The interphase short circuit occurs in the output of the
intelligent power module (IPM).
The compressor winding shorts circuit.
10-time flash
2.5 seconds
OFF
Discharge temperature
—
Temperature of discharge temperature thermistor has been
50°C or less for 20 minutes. —
○
11-time flash
2.5 seconds
OFF
DC voltage 8-time flash
2.5 seconds OFF
DC voltage of inverter cannot be detected normally.
—
○
Each phase current of
compressor
9-time flash
2.5 seconds OFF
Each phase current of compressor cannot be detected
normally.
12-time flash
2.5 seconds
OFF
Overcurrent Compressor
open-phase
10-time flash
2.5 seconds OFF
Large current flows into intelligent power module (IPM).
The open-phase operation of compressor is detected.
The interphase short circuit occurs in the output of the
intelligent power module (IPM).
The compressor winding shorts circuit.
—
○
14-time flash
2.5 seconds
OFF
Stop valve (Closed valve) 14-time flash
2.5 seconds OFF
Closed valve is detected by compressor current.
○ ○