Outside Air Thermostat - TM-5-4120-273-150047

TM 5-4120-273-15

Figure 3-13. Junction box, fuses, time delay relay, terminal board, heater

relay, compressor motor relay, circuit breaker and phase sequence relay, removal and

installation.

b. Removal. Remove outside air thermostat as

3-43. Outside Air Thermostat

illustrated on figure 3-14.

a. General. The outside air thermostat is

c. Testing. Test the thermostat for continuity

mounted to the rear housing of the air conditioner.

with a multimeter set on OHMS. Refer to the wir-

It prevents the compressor from being started

ing diagram, figure 15 for the points to establish

when the outside temperature is below 50F. This

prevents the unit from being operated at a time

when low condensing and suction pressures will

d. Installation. Refer to figure 3-14 and install

hamper system operation. (fig. 3-14).

outside air thermostat.

3-17