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170
SCM-HG
(4 room)
Outdoor unit e
rror
[Broken power transistor,
broken compressor wire]
Is output voltage applied to all 3
phases of power transistor?
YES
YES
NO
NO
Inspect compressor. (Broken coil
wire)
Is compressor wiring connected
securely?
Connect securely.
Over current
[Overload operation, compressor
lock, overcharge]
Defective inverter
Secure space for inlet and outlet.
Discharge refrigerant.
Is refrigerant charge quantity adequate?
Is outdoor ventilation condition good?
Inspect compressor.
Defective inverter
YES
YES
NO
NO
YES
Power transistor overheat
[Poor cooling]
Secure space for inlet and outlet.
Inspect outdoor fan motor.
Is outdoor fan motor operating
properly?
Is there any shortcircuit?
YES
YES
NO
NO
Defective inverter
Compressor overheat
[Gas shortage, defective
discharge pipe sensor]
Is discharge pipe sensor resistance
value good?
Is sufficient quantity of refrigerant
circulated?
Defective inverter
YES
YES
NO
NO
YES
NO
Gas shortage
Connector connection check, resistancevalue
check, replacement of discharge pipe sensor
Does trouble persist after
charging gas?
Clogged capillary tube,
etc.
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 ...