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Table 4-1. TROUBLESHOOTING (cont.) - 506780086
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TM-5-4120-359-14 Air Conditioner Split Package 18 000 BTU/HR Cooling 30 000 BTU/HR Heating 208 Volt 3 Phase 400 Hertz Manual
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Table 4-1. TROUBLESHOOTING (cont.) - 506780088
TM 5-4120-359-14
Table 4-1. TROUBLESHOOTING (cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WARNING
The following test must be conducted with the power on.
Exercise extreme
caution.
(c) Apply power.
(d) Test for 208 Vac between P12 pins:
D and E
D and F
E and F
(e) If 197 to 229 Vac is present in all three phases, go step 9.
(f) If not, use electrical schematic (figure 4-2) or wiring diagram (figure 4-3), to locate defect.
Repair or replace defects as indicated.
Step 9.
Check DC voltage output.
(a) Make sure all connections have been restored.
(b) Apply power.
WARNING
The following test must be conducted with power on. Exercise extreme caution.
(c) Check for voltage between pins A and H of remote cable at washboard or P14.
(d) If 25 to 31 Vdc is not indicated, go to steps 10 thru 12.
4-5

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