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9. TROUBLESHOOTING
9-1. Check before and after troubleshooting
9-1-1. Check power supply wiring
● Check that power supply wires are correctly connected to terminals No. 5 and No. 6 on the terminal plate
in the outdoor unit.
Hazardous voltage can cause ELECTRIC SHOCK or
DEATH. Disconnect power or turn off circuit break-
er before you start checking or servicing.
WARNING
INDOOR
INDOOR UNIT
Terminal
Disconnect
switch
(Field supply)
1
2
3
1
2
3
4
5
6
GG
Grounding
line
Power supply line
C0951, CL0951.......1-phase, 115 V
C1251, CL1251.......1-phase, 115 V
C1852, CL1852.......1-phase, 230/208 V
(Inter-unit)
Power lines
Terminal
OUTDOOR UNIT
Fuse
L1
L2
9-1-2. Check inter-unit wiring
● Check that inter-unit wiring is correctly connected to the indoor unit from the outdoor unit.
9-1-3. Check power supply
● Check that voltage is in specified range (±10% of the rating).
● Check that power is being supplied.
9-1-4. Check lead wires and connectors in indoor and outdoor units
● Check that coating of lead wires is not damaged.
● Check that lead wires and connectors are firmly connected.
● Check that wiring is correct.
000-215 SM (1-56) 7/19/00 3:47 PM Page 44