31
M-43-25 LUF-Series Lufran Manual
Revision - Date 03-01-04-18 Standard outlet, Standard Interface
Engineering Information (Continued):
Alarms (Continued):
Alarms
Alarm History Menu Description
SSR Fault SSR Heatsink Fault
The thermostat on one of the head sinks for the SSRs has
tripped, indicating a high temperature on the heat sink.
This may be caused by a malfunctioning fan, high ambient air
temperature, inadequate air circulation through the cabinet, or a
tripped power fuse in the unit.
The cause of this alarm must be identified and corrected before
the unit can be reset.
Liquid Level
Fault
Liquid Level fault
The liquid level sensor at the top of plumbing does not detect
liquid in the outlet tube of the unit. The system is disabled until
the liquid level sensor detects liquid in the outlet tube of the
heating column. This may be caused by a lack of water to the
unit.
This safety will prevent catastrophic overheat damage to the
heating column. The cause of the liquid level fault must be
identified and corrected before the unit can be reset.
Purge Fault Purge Fault
The purge gas pressure switch does not detect adequate purge
gas pressure. The unit has been disabled to prevent heater
failure. This may be caused by
shutting off the purge gas
supply to the unit.
When the purge gas pressure is at an acceptable pressure, the
unit can be reset.
Leak Fault Leak Fault
The optional cabinet leak detector has detected liquid in the
bottom of the cabinet. The source of the liquid needs to be
Flow Meter Sensor
Disconnected
The flow meter has suffered a fault and should be replaced.
Inlet TC
Open Circuit
Inlet Sensor Disconnected
The inlet temperature sensor has failed (open). The inlet
temperature sensor must be replaced. This may also be
caused by a disconnected sensor connection.
Setpoint
Remote Input Open Circuit
The 4-20mA input signal for the remote setpoint
This alarm is disabled when the unit is in LOCAL or MANUAL
control modes.
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