Simplex NORTHSTAR 125 KW, Manual

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9.3 Failure Subsystem
Excessive intake/exhaust temperatures, any reduction in cooling air flow, or a Loss of
Communication from either the hand-held controller or the controlling load bank is
indicated by the illumination
of the “Error” indicator on the
hand-held remote control.
Any of the above conditions
will result in the load bank
entering a failure state. The
“Failure” indicator on the
hand-held controller will
illuminate and the load de-
energizes. All load steps are
locked out until the problem is
corrected. Until the failure is
investigated/corrected and the control system is reset the load cannot be reapplied.
Problem Cause Resolution
High Exhaust
The unit has
overheated due to:
1
The fan has
stopped running.
The unit needs to be serviced.
Please contact a technician for
your problem.
2
The unit lacks
sufficient exhaust
space.
Move the unit to an area that
allows for proper air circulation.
Metering Sys Fault
Communications failure between PLC and
meter.
Turn the unit off, disconnect all
power cables, and wait a couple
of seconds. Reapply power and
turn the unit on. If the problem
persists, contact a technician for
your problem.
Over KW/Under KW
Metered load does not match expected
load.
The connection may be loose
or the wire may have become
disconnected. Please contact a
technician for your problem.
Slave # Failure
When multiple units are chained together, the primary unit will display “Slave [Unit
Number] Failure.” You must inspect that unit to resolve the failure.
Table 5 Trouble Shooting Table
WARNING
If a failure occurs during Load Bank opera -
tion, the Load Bank will de-energize all load
steps The operator must reset the Load
Bank by turning it “Off” then “On.” The
load failure must be investigated and cor -
rected before load application can resume.