Compressor Circuit Board
C o m p re s s o r C o n t r ol Circuit Switch
(“ON/OFF”) shuts off all power to the com-
pressor contactor and all components in that
c o m p r e s s o r ’s control circuit, and resets the
alarm circuit. After a failure condition is cor-
rected and reset, the switch must be turned
“OFF” until the alarm light turns off then the
switch may be turned “ON” again.
Board Power – Green LED – indicates that
120VAC is applied to the board. It can only be
turned off at the panel circuit breaker.
C o m p re s s o r O n – Yellow LED – indicates
that there is 120VAC to the contactor coil.
Alarm – Red LED – indicates that this com-
pressor has had an alarm failure, and the
alarm relay is energized. This light will go off
when the alarm condition is corrected and the
control switch is reset.
Fuse Failure – Red LED – lights if the fuse
has blown. (Fuse is on board.)
High Pre s s u re Failure – Red LED – lights
under high pressure failure condition.
Oil Failure – Red LED – lights under oil fail-
ure condition.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 • Printed in USA
ELECTRICAL Revised August 1, 1996
4 - 6
ON/OFF switch does not remove power
from the circuit board.
The Control Panel Circuit Breaker
must be shut off.
WARNING
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