Installation Instructions (cont)

TM 5-4120-393-14

(4) With zero voltage on pin D of P1 connector, check voltages between remaining pins as shown on following

chart.

P1 CONNECTOR

Measure

To Pin

From

N/A

208

120

208

N/A

208

120

208

N/A

120

N/A

Voltages should be approximately as shown. If voltages are not within ten volts of those

indicated on chart, disconnect power. Locate and correct problem.

CAUTION

Check that mode selector switch is OFF.

(5) After proper voltages are indicated on all pins of connector P1, turn power off at power source and connect

P1 to connector J1 on air conditioner. Turn power back on at source after J1 has been connected to the ACU.

NOTE

The following steps require two people. One must be at control panel. The other

must be in position at rear of air conditioner to see condenser fan rotation.

(Condenser fans can be seen through condenser air outlet grilles.) Should

dampers be closed, remove lower front panel to observe fans.

(6) The person at control panel should turn mode selector switch to COOL and immediately back to OFF.

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