TM 9-4120-407-14
2-7. OPERATING PROCEDURES. (Cont)
(3) If the TEMPERATURE/PRESSURE FAULTS indicator light comes on, immediately turn the mode
selector rotary switch to OFF RESET position and disconnect power. Notify Unit Maintenance.
NOTE
The TEMPERATURE/PRESSURE FAULTS indicator light will come
on if either of the evaporator fan motors exceed safe operating
temperature limits and air conditioner will shutdown.
d. Operation in Heat Mode.
Obstructing the airflow across the heating elements will cause
excessively high temperatures and could severely damage the
equipment.
(1) Adjust the evaporator air discharge and return grilles and the fresh air damper as desired.
NOTE
If the fresh air damper is to be opened, the fabric cover must be
rolled up and secured.
Figure 2-10. Fabric Cover
(2) Adjust the TEMPERATURE potentiometer midway between WARM and COOL.
Figure 2-11. HEAT Control Setting
2-22