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 TM9-4120-423-14&P
1
Evaporator section electrical module assembly must be connected to an operable air conditioner.
2
208V, 3 phase, 400 Hz power, and power cable must be available.
3
Top evaporator cover must be removed. (See WP0026.)
4
Top module cover must be removed. (See WP0041.)
WARNING
AC power tests must be conducted with the power on. Exercise extreme caution.
5
Connect power to air conditioner.
6
Turn mode selector switch to LOW HEAT.
7
Turn temperature control to maximum COOLER.
8
Using multimeter, check voltage across AC terminals of CR1. Voltage should be 27 to 33 Vac.
9
Using multimeter, check voltage across + and - terminals of CR1. Voltage should be 25 to 31
Vdc. If voltage is low or there is no voltage, rectifier should be changed.
10
Remove power to air conditioner.
11
Check capacitor for evidence of overheating. Replace if discolored or damaged.
END OF TASK
0037 00-4
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