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 TM 9-4120-428-14
0010 00
MALFUNCTION 10
CONDENSER AIR OUTLET VOLUME LOW
SYMPTOM
The condenser air outlet is running low.
MALFUNCTION
The condenser coil or guard is dirty.
CORRECTIVE ACTION
Check for a dirty condenser coil or guard and clean the coil and guard if necessary.
The condenser fan is damaged.
CORRECTIVE ACTION
Inspect the condenser fan for damage and replace fan if necessary.
The air outlet louvers are stuck or jammed in the closed position.
CORRECTIVE ACTION
Check to be sure the air outlet louvers are not stuck or jammed in the closed position. If
necessary, free louvers and control cable, adjust the control, and notify your supervisor if
the actuating cylinder not working properly.
MALFUNCTION 11
UNIT FAILS TO HEAT
SYMPTOM
The air conditioner will not heat.
MALFUNCTION
The MODE SELECTOR switch is not properly set.
CORRECTIVE ACTION
If necessary, set the MODE SELECTOR switch to the LOW HEAT or the
HIGH HEAT setting and wait for temperature change.
The TEMPERATURE SELECTOR switch is not properly set.
CORRECTIVE ACTION
Ensure the TEMPERATURE SELECTOR switch is set properly. Reset the
switch if necessary.
The evaporator return air filter is dirty.
CORRECTIVE ACTION
Clean the filter if necessary.
The evaporator fan motor is not operating properly.
CORRECTIVE ACTION
Replace the motor if necessary.
There is no existing continuity of the TEMPERATURE SELECTOR switch and the MODE
SELECTOR switch.
CORRECTIVE ACTION
Replace bad switch if necessary.
0010 00-7
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