supplied contactor coil/relay when the defrost option is
used. Terminals are male spade type. Coil voltage rating
should be 220VAC and current ratings, 30VA (hold) and
330VA (inrush). See Figure 6.
For customers using their existing defrost timer, remove
the defrost cable connecting the defrost control board to
the unit control board. Also on the unit control board
change the mode setting dip-switch bit 2 to ON and
proceed to standard defrost wiring. See Table 7.
15. Updated Defrost Control Module
Models produced after mid 2013 include an updated
electronic control module that allows for both interval
based defrost or real time based defrost. See Figure 7
for quick setup guide. See Appendix 2, Defrost
Quickstart, for detailed information.
16. Evaporator Fan Control
An ON/OFF output connection is also provided on the
control board (JP9) for direct connection of a customer
supplied contactor coil controlling the evaporator fans.
Terminals are the male spade type. Coil voltage rating
is to be 220VAC and a maximum power rating of 30VA
(hold) and 330VA (inrush). See Figure 6.
17. Diagnostic Display Board
Each condensing unit is supplied with a one-way
communications and diagnostic display board, see
Figure 5. A two character display will make up the
diagnostic/error code. The first character will display the
unit status as shown in Table 8. The second character
will display the error/warning code as shown in Table 8.
See Figure 5 for a detailed view of the diagnostics
board assembly.
The Main Board Connector terminal will accept the
cable connecting the display board to the main control
board. The Reset Button will reset the diagnostic display
board only. The Message Recall Button will display the
last error signal received by the display board. See
Figure 5.
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