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171
SCM-HG
(4 room)
Indoor fan motor error
[Defective fan motor,
defective PCB]
YES
YES
NO
NO
Is connector connection good?
Is voltage applied to fan motor?
(Between White - Red)
Defective fan motor
Correct connector
connection.
Defective indoor unit
PCB
Serial signal transmission abnormality
[Indoor/outdoor printed circuit board defect
Outdoor power source abnormality]
High pressure abnormality
[Overcharge
Short circuit]
Drain abnormality
[Drain piping defective,
pump defect]
Are receiving lamps (LEDs 3 to 5) on?
Outdoor printed circuit board defect.
The outdoor printed circuit board is defective.
Does the voltage between
2
and
3
on the outdoor side oscillate
between 0 and 12V?
Does the voltage between
2
and
3
on the indoor side oscillate between
0 and 12V?
The indoor printed circuit board is defective.
The power supply and signal wire are defective.
YES
YES
YES
NO
(Flashing)
NO
NO
Please see page 174 for the inspection proce-
dure for the serial signal transmission abnor-
mality in the outdoor power supply.
Note:
Is the refrigerant charge correct?
Is there a short circuit?
Is the fan motor operating properly?
Release refrigerant.
Check the installation conditions.
Inspect the fan motor.
Inverter defective.
YES
YES
YES
NO
NO
NO
(1)
(1)
Cooling: Outdoor side, outdoor fan motor
Heating: Indoor side, indoor fan motor.
Also check for air filter and heat-
exchange fin clogging.
Notes (1)
(2)
Has an overflow developed?
Is the float switch operating?
Indoor printed circuit board
is defective.
Inspect float switch.
Repair and clean.
Indoor printed circuit board is defective.
Is the drain piping clogged or at the
wrong gradient?
Drain motor is defective. Inspect
wiring.
Is there output for drain motor driver?
YES
YES
YES
YES
NO
NO
NO
NO
Note (1) Drain pump is an option.
Содержание SRRM40HENG-L
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Страница 52: ...50 SRK GZ MEMO ...
Страница 94: ...92 SRK H MEMO ...
Страница 104: ...102 102 SRK C MEMO ...
Страница 180: ...178 SCM HG 4room MEMO ...
Страница 222: ...220 SCM HG 2room MEMO ...
Страница 234: ...232 SCM CG 2room MEMO ...
Страница 266: ...SCM C 264 MEMO ...
Страница 406: ...404 FDT N C MEMO ...
Страница 442: ...440 FDEN H MEMO ...
Страница 470: ...468 FDEN C MEMO ...
Страница 504: ...502 FDKN H MEMO ...
Страница 580: ...578 FDR H MEMO ...
Страница 698: ...696 V MULTI Models FDR258 A 308 A ...
Страница 724: ...722 V MULTI MEMO ...
Страница 1094: ...1092 FDC HKXR MEMO ...