DEFROST CIRCUIT BOARDS
Defrost Control Circuit Switch
(“ON/OFF”)
shuts off all power to the defrost branch circuit.
Branch On
– Green LED – indicates that there is
120VAC to the system branch circuit. If the
switch is off, the light will turn off.
Defrost
– Yellow LED – indicates the system is
in defrost. This light will turn off if the defrost has
been terminated due to time or temperature, and if
the branch is in drip cycle.
EPR Solenoid
– Green LED – indicates the suc-
tion stop solenoid is energized, which means the
valve is open.
Liquid Branch Solenoid
– Green LED – indi-
cates the liquid branch solenoid is energized. It
will turn off when the thermostat no longer calls
for refrigeration.
ELECTRICAL
September 1, 1997
4 - 20
HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
Figure 4-15 — Branch Board Faceplate
BRANCH ON
DEFROST
EPR
SOLENOID
LIQUID
BRANCH
SOLENOID
ON
OFF
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