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 TM 9-4120-428-14
0010 00
CORRECTIVE ACTION
If necessary, free the louvers and the control cable, adjust the control, or notify
your supervisor if actuating cylinder is not working properly.
MALFUNCTION 8
UNIT OPERATES CONTINUOUSLY ON COOLING CYCLE
SYMPTOM
The unit operates continuously on cooling cycle.
MALFUNCTION
The TEMPERATURE SELECTOR switch is in the wrong position.
CORRECTIVE ACTION
Check the position of the TEMPERATURE SELECTOR switch. If necessary,
move the selector to WARMER. (WP 0030 00).
The TEMPERATURE SELECTOR is broken or defective.
CORRECTIVE ACTION
Check the TEMPERATURE SELECTOR switch and replace if defective. (WP
MALFUNCTION 9
EVAPORATOR AIR OUTPUT VOLUME LOW
SYMPTOM
The output volume of evaporator air is low.
MALFUNCTION
Louvers or filters are dirty.
CORRECTIVE ACTION
Clean louvers or filters and replace if necessary.
The evaporator coil is dirty or icy.
CORRECTIVE ACTION
De-Ice and clean coil when necessary. (WP 0054 00).
The evaporator fan is damaged.
CORRECTIVE ACTION
Inspect the evaporator fan for damage and replace the fan, if necessary. (WP 0050 00).
The evaporator fan has a bad motor.
CORRECTIVE ACTION
Check for a bad fan motor and replace motor if necessary. (WP 0050 00).
The EVAPORATOR FAN SPEED switch set at a low speed.
CORRECTIVE ACTION
Check to ensure the EVAPORATOR FAN SPEED switch is NOT set at LOW speed. If
necessary, reset the switch to HIGH speed.
0010 00-6
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