TM 9-4120-357-14
remain energized when the temperature is satisfied and the conditioned space would become over-heated. When the
LO HEAT mode is selected only three of the six heating elements are energized when the temperature control is not sat-
isfied and all heat is off when the temperature control is satisfied. In both cases the temperature control thermostat con-
trols and deenergizes or shuts off three of the six heating elements when the room or return air is warmer than the ther-
mostat setting. When overheating occurs, turn the mode selector switch to LO HEAT.
Figure 1-5. Refrigeration Diagram
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