See Figure 1
The compressor cycles ON and OFF to maintain the evaporator temperature within a specified range. When the evaporator temperature falls below the specified temperature, the thermal control amplifier interrupts the compressor operation. When the temperature rises, the amplifier turns the compressor ON.
REMOVAL & INSTALLATION
Automatic Temperature Control
See Figure 2
Remove the screws securing the thermistor retainer at the front of the cooling unit. Replace the thermal control amp assembly with a new one. The cooling unit does not have to be removed for these procedures.