Hoshizaki Steelheart Series Service Manual page 11

2. Cabinet Sequence
Cabinet Fan Motor(s) relay energized through rail control module
1. Startup/Cool Down 2. Cool Down Achieved
Cycle Steps
Power on
*CabFM energized
*CabFMR energized
Legend:
CabFM-cabinet fan motor
CabFMR-cabinet fan motor relay
CCM-cabinet control module
CTh-cabinet thermistor
RCM-rail control module
Cabinet Sequence Flow Chart
3. Cool Down Restart
CTh cools to
1.8°F (1°C)
CTh above setpoint below setpoint or
RCM not in Defrost RCM in defrost
*CabFM de-energized
*CabFMR de-energized
Cabinet Factory Default Setpoint:
Cabinet Control Module: 35°F (1.7°C)
*Note:
a) RCM de-energizes CabFMR when rail is in defrost.
b) CabFM(s) are energized when the CCM cooling icon is on and
CabFMR is energized. The cooling icon represents a call for cooling
from the CTh. When displayed, CCM provides 115VAC to CabFMR
for CabFM operation. CabFMR only energizes when EvapFM(s) are
energized through the RCM. The CCM cooling icon may be on when
the CabFMR is not energized due to the appliance being in defrost.
11
CTh warms
to 1.8°F (1°C)
above setpoint and
RCM not in defrost