Manual 2100-652A
Page
35 of 42
High Pressure Switch Operation
– The control has a
built-in lockout system that allows the unit to have the
high pressure switch trip up to two times in 1 hour and
only encounter a “soft” lockout. A “soft” lockout shuts
the compressor off and waits for the pressure switch to
reset, which at that point then allows the compressor to
be restarted as long as the 5-minute short cycle timer has
run out. If the high pressure switch trips a third time
within 1 hour, the unit is in “hard” lockout indicating
something is wrong and it will not restart itself.
120*
SW
1
SW
2
TIME (SEC)
OFF
OFF
ON
ON
OFF
ON
OFF
ON
30
60
180
LOW PRESSURE BYPASS TIMER SWITCH
(FACTORY SETTING 120 SECONDS)
ACCUMULATED RUN TIME SELECTOR
(FACTORY SETTING 30 MIN.)
MIS-2684 A
ON
OFF
Figure 24
Defrost Control Board
