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Step Component
5
Inverter
assembly
1. Detachment
AMP Air Conditioning
Procedure
WARNING
Do not detach the inverter for 5 minutes after
turning off the breaker as doing so may cause
electric shocks.
1) Remove the front panels, upper panel,
discharge cabinets, side panels, and reactor
box. [Step.1, Step.2, Step.3, and Step.4]
2) Unplug the two fan motor lead connectors and
remove the lead wire clamps (1 position). (Fig.
5-1, 5-2)
Remove the two metal bands, and disengage
the fan motor leads from the inverter fi xing
plate (lower) hooks (2 positions). (Fig. 5-3)
CN700 ...Fan motor lead (3P: blue)
CN750 ...Fan motor lead (3P: white)
3) Unplug the connectors of the sensors
connected to other components on the
interface P.C. board.
CN502 ...TD sensor (3P: white)
CN507 ...TO sensor (2P: yellow)
CN520 ...TE sensor (2P: green)
CN505 ...TS sensor (2P: white)
CN523 ...TL sensor (2P: white)
CN317 ...4-way valve coil (3P: blue)
CN300 ...PMV coil (6P: white)
CN312 ...2-way valve coil (3P: red)
CN314 ...2-way valve coil (4P: white)
CN311 ....2-way valve coil (3P: white)
CN308 ...Case thermostat (2P: blue)
CN501 ...High-pressure sensor (4P: red)
CN500 ...Low-pressure sensor (4P: white)
CN600 ...Connection with fan P.C. board (CN504) (5P: blue)
CN400 ...Connection with noise fi lter P.C. board (CN08) (3P: white)
4) Remove the sensor lead wire clamp
(2 positions). (Fig. 5-4)
5) Remove the clamp wires. (3 positions)
(Fig. 5-5)
CAUTION
Disengage the locks on the housing to unplug
the connectors.
(Fig. 5-1)
(Fig. 5-2)
Inverter fixing plate (lower) hooks
(2 positions)
(Fig. 5-3)
(Fig. 5-4)
(Fig. 5-5)
156
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Remarks
Lead wire clamp
of fan motor
(1 position)
Fan motor connectors
(2 positions)
Notes
lead of the upper part in
CN700 (3P: blue).
Metal bands (2 each)
Sensor lead wire
clamps
(2 positions)
Clamp wire
(3 positions)
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Troubleshooting
