Hussmann GSVM Installation & Service Manual page 16

I
2-4
NSTALLATION
• Rear connections:
– Case temperature sensor:
• Typically senses the temperature
of the air in the case.
Used by the controller to determine when
to power on or power off the compressor
or refrigeration.
– Evaporator temperature sensor:
• Senses the temperature of the
refrigeration coil.
Terminates a defrost cycle when
refrigeration coil ice melts.
– Compressor or refrigeration relay:
• Switches on the compressor or
refrigeration valve for cooling.
– Defrost / reversing condenser switch
• Swtiches on the defrost or reversing
condenser fan motor - when used with the
condenser fan motor option.
The optional evaporator fan remains ON
when the adjustment knob is in the OFF
position.
DISPLAY
The display includes three red LEDs and two
digits for temperature, defrost status, and error
codes.
The three display LEDs are red, and their
P/N 0515275_F
START-UP
The OFF Position does not disconnect line
voltage to the case, refrigeration unit, fan,
or heater.
1. Plug in the merchandiser.
2. Wait for the self check to complete. During
the self check, each LED flashes for one
second, then all LEDs turn on for two
seconds. If the LEDs do not flash, make
sure the adjustment knob is not in the Off
position.
• After the self check, all LEDs turn off
until the compressor starts. There may be a
delay before the compressor starts. If the
red Temperature or Sensor Alarm LED
stays on after the self check.
• The green Compressor Powered On LED
turns on when the compressor starts.
NOTE: Do NOT load product until AFTER
merchandiser operates for 24 hours and reaches
desired operating temperature.behavior matches
the LEDs on the controller.
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.
U.S. & Canada 1-800-922-1919 • Mexico 01 800-890-2900 • www.hussmann.com