Compu-aire SYSTEM 2100 Installation, Operation And Maintenance Manual page 34

Rev. 01
05/27/2016
DIP switches on MCP
are not set correctly.
Heaters are not on
because of loose or
broken wiring.
Page 34 of 42
After setting a
temperature set point
sufficiently higher
than room air, and
waiting one minute,
the display never
shows any stage of
heating.
Display shows stage
one or stage two
heating but the
heaters are not on.
that all control
parameters are set
correctly.
Refer to the section in
this guide, DIP Switch
Settings, and check
that the heaters are
enabled.
Test for 24VAC at pin
27 of the MCP
terminal connector.
Test at pin 30 only if
stage two is off. Test
at both 30 and 33 if
stage two is on. If no
voltage at pin 27 or if
voltage at each, check
back to system
terminal block and
heater contactors. If
voltage at pin 27 but,
no voltage at pin 30
Compu-Aire