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1077
FDC-HKXR
Did turn off
the power of outdoor
unit during
operation?
Power supply
ON
NO
(1)
YES
YES
NO
Note (1) This case is limited to the separate power supplies to indoor/outdoor units. (Combination of (indoor unit) red LED 2
time flash and (outdoor unit) green LED stays off means that the power supply to the outdoor unit has been
interrupted during operation.)
Power supply reset
Is it
normalized?
Defective outdoor unit
PCB
→
Replacement (De-
fective network communi-
cation circuit)
• Blown fuse?
• Broken or loose wire at L
1
, L
2
or N
Phase?
• Was not there the power failure?
(1)
Malfunction due to noise, etc.
(Out of control CPU of outdoor
unit due to noise during power on)
Signal wire poor
connection at outdoor
unit?
Repair
Repair
Power supply reset
Is it
normalized
Signal wire poor
contact between indoor/
outdoor units?
Unit is normal.
(Malfunction by
accidental noise)
YES
YES
YES
NO
NO
Defective outdoor unit
PCB
→
Replacement (De-
fective network communi-
cation circuit)
(1)
(2)
Indoor unit
Red LED
Green LED
2time flash
Keeps flashing
Outdoor unit
Red LED
Green LED
Stays OFF
Stays OFF
2
Error display:
[Outdoor unit signal line error, power supply error]
Red LED
Green LED
Stays OFF or
keeps flashing
Stays OFF or
Lights continuously
Outdoor unit
Outdoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Notes (1) Check for poor connection (Iooseness, mis-
connection) at outdoor unit terminal block
and broken signal wires between outdoor
units.
(2) Check the poor connection or broken signal
wires between indoor/outdoor units.
Summary of Contents for SRRM40HENG-L
Page 1: ...MITSUBISHI DAIYA 2000 AIR CONDITIONING HEAT PUMP MACHINERY HANDBOOK ...
Page 52: ...50 SRK GZ MEMO ...
Page 94: ...92 SRK H MEMO ...
Page 104: ...102 102 SRK C MEMO ...
Page 180: ...178 SCM HG 4room MEMO ...
Page 222: ...220 SCM HG 2room MEMO ...
Page 234: ...232 SCM CG 2room MEMO ...
Page 266: ...SCM C 264 MEMO ...
Page 406: ...404 FDT N C MEMO ...
Page 442: ...440 FDEN H MEMO ...
Page 470: ...468 FDEN C MEMO ...
Page 504: ...502 FDKN H MEMO ...
Page 580: ...578 FDR H MEMO ...
Page 698: ...696 V MULTI Models FDR258 A 308 A ...
Page 724: ...722 V MULTI MEMO ...
Page 1094: ...1092 FDC HKXR MEMO ...