Heatcraft BOHN MAC7X - Monitoring Smart Controller; SUPRHT - Superheat; EXVSET - Expansion valve step setting; SUCTMP - Evaporator Suction temperature

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Monitoring Smart Controller
MONITORING SMART CONTROLLER
The monitoring function can be used to monitor live system data.
The information displayed, such as super-heat, is the actual
superheat of the system as it is changing.
Press the MONITOR button and follow the steps below
(to back up one step during monitoring, while pressing
the “PROGRAM REVIEW” button, press the
“MONITOR” button):
•
SUPRHT
– Superheat (use + button to check superheat of
other evaporators, if Master/slave)
•
EXVSET
– Expansion valve step setting (Stepper Motor
setting 0 to 255 steps: use + button to check other evaporators
if Master/slave)
•
SUCTMP
– Evaporator Suction temperature
(Measured by the Suction Sensor)
•
SSVTMP
– Saturated Suction temperature at the Evaporator
(Determined by Suction Transducer)
•
SUCPRE
– Evaporator Suction Pressure
(Measured by Suction Transducer)
•
OD TMP
– Actual outdoor ambient temperature
(Measured at the Condensing Unit)
•
DEFTMP
– Evaporator coil temperature
(Used to terminate defrost)
•
DEFTIM
– Defrost Time: Length of last defrost
•
CMPCYC
– Comp Cycles:
No of Compressor Cycles since 12:00 midnight
•
CMPRUN
– Comp run time
(Measured since 12:00 midnight)
•
SPRTMP
– Spare sensor temperature input
•
VERSON
– Software Version: For each Beacon II
Controller (use “+” button to check other evaporators, if
Master/slave)
•
VERSON
– Software Version: for Smart Controller
When multiple evaporators are connected as master/slave
depressing the + or - button will display information specic
to each evaporator. Units in a master/slave connection are
numbered 1 through 4.
The rst evaporator connected to the SMART CONTROLLER
MULTI-OUT Terminals is Evaporator #1 and must be a
“master” board.