7978
ON SCREEN DESCRIPTION POSSIBLE SOLUTIONS
Master Power Error The Master Power switch to the
powered valve outputs was in the wrong
state.
Remove all valve wires and run the system. If the
problem resolves, there is a wiring issue with the
solenoids. If the problem remains, the Terminal Card
is likely damaged. Check the solenoid connections
for shorts to ground or across the terminals before
installing a new board.
Modbus Card: Shutdown The system shut down because a
remote shutdown command was
received via Modbus.
Check the data being sent through the Modbus
connection.
Modbus Card: Shutdown /
Remote Cmd Error
The system received an undefined
command from the Modbus Expansion
Card.
Check the data being sent through the Modbus
connection.
Pilot Key Stuck The Pilot Key was held for more than
30s while in manual mode.
Check for mechanical failure of the key.
Pro Thermocouple Error The Process Thermocouple is open or
shorted.
Check wiring.
Proof of Closure / Should be
Closed
The Proof of Closure Contact was
detected to be Open when it was not
expected to be.
This may indicate a faulty valve or wiring.
Purge Values Mismatch The Door Card and Terminal Card do not
agree on the value of the Purge Time
Setting.
Reset to factory defaults.
Run CRC Error Main Program Memory CRC Error Reset to factory defaults.
Solenoid Feedback Error /
Check Solenoid Wiring
The solenoids were observed to have a
state opposite to the one being driven
by the PF2100.
Remove all valve wires and run the system. If the
problem resolves, there is a wiring issue with the
solenoids. If the problem remains, the Terminal Card
is likely damaged. Check the solenoid connections
for shorts to ground or across the terminals before
installing a new board.
System Error Illegal Process Control or Display State Reset to factory defaults.
Terminal Card
Ambient Fail
The Terminal Card could not measure
the ambient temperature. The Door Card
failed to detect this.
Reset to factory defaults. Likely a faulty terminal card.
Terminal Card
Command Refused
The Terminal Card received a valid
command from the Door Card but the
command was refused because it would
result in an invalid or unsafe state. The
Door Card failed to detect this.
Remove all valve wires and run the system. If the
problem resolves, there is a wiring issue with the
solenoids. If the problem remains, the Terminal Card is
likely damaged.
Terminal Card
Communication
The Terminal Card is not communicating
with the Door Card. This may indicate
a faulty ribbon cable or incompatible
firmware. The Door Card failed to detect
this.
Make sure the ribbon cable is properly installed. Likely
a fault with door, ribbon or terminal.
Terminal Card
High TC Grounded
The Terminal Card detected that the
High Temp Thermocouple was shorted
to ground. The Door Card failed to detect
this.
Check for continuity from the high temp TC to ground.
If there is no connection remove the thermocouple
and replace it with a jumper. If the problem persists it
is likely a door or terminal card fault.
Terminal Card
High Temp Alarm
The Terminal Card detected that the High
Temp Thermocouple exceeded the High
Temp ESD Setpoint. The Door Card failed
to detect this.
Check for continuity from the high temp TC to ground.
If there is no connection remove the thermocouple
and replace it with a jumper. If the problem persists it
is likely a door or terminal card fault.
Terminal Card
Reciprocal Comp
The Terminal Card detected that the
Door Card status or High Temp ESD
Setpoint did not match. The Door Card
failed to detect this.
Reset to factory defaults. Remove all wires but power,
install default jumpers. If the problem persists there is
likely a problem with the one of the boards.
Terminal Card
Shutdown Detect
The Terminal Card detected an alarm
condition. The Door Card failed to detect
this.
Reset to factory defaults. Remove all wires except
power; install default jumpers. If the problem persists
there is likely a problem with the one of the boards.
ON SCREEN DESCRIPTION POSSIBLE SOLUTIONS
Terminal Card
Voltage Sense
The Terminal Card detected that the
system voltage was outside of allowable
limits. The Door Card failed to detect
this.
Reset to factory defaults. Remove all wires except
power; install default jumpers. If the problem persists
there is likely a problem with the one of the boards.
Thermocouples
Not Equal / Check Wiring
The High Temp and Process
Thermocouples are reading
temperatures that are too far apart.
This may indicate a failed thermocouple
or improper wiring.
Check thermocouple readings with dry block or
process calibrator.
User Stop The user pressed the Stop key on the
keypad.
6.3 | Alarm Codes
The following is a list of alarm codes that may show on the Alarm screen of the PF2100 display. These
codes indicate a persistent problem that must be cleared before the system can be restarted. Use the
table below to determine the meaning of these codes.
ON SCREEN DESCRIPTION POSSIBLE SOLUTIONS
4-20Lvl The 4-20 Input Card’s Level Input is
reading a value below the 4-20 Level
Low Setpoint and “Level Event Restart”
is set to “Off”.
Verify proper settings and check for issues outside the
system.
4-20Prs The 4-20 Input Card’s Pressure Input is
reading a value below the 4-20 Pressure
Low Setpoint and “Auto Restart” is set
to “Off”.
Verify proper settings and check for issues outside the
system.
AuxTC The system is in a mode that requires
the Aux Thermocouple and the Aux
Thermocouple is open or otherwise
wired incorrectly.
Check wiring.
DC_TC The TC430 temperature sensor on the
Door Card is not responding.
ESD_Inp The ESD Contact is Open. Check wiring.
FlmTest There is a problem with the Flame
Detection wiring or circuitry.
Check wiring.
PoC_Inp The Proof of Closure contact is open. Check wiring.
HiVolt The system voltage is above the High
Voltage Alarm point.
Verify proper settings and check for issues outside the
system.
HT_ESD The Process Temperature is above the
High Temp ESD Setpoint.
Verify proper settings and check for issues outside the
system.
HT_TC The High Temp Thermocouple is open or
otherwise wired incorrectly.
Check wiring.
LoVolt The system voltage is below the Low
Voltage Alarm point.
Verify proper settings and check for issues outside the
system.
LowPrs The Low Pressure Contact is Open or
the 4-20mA Expansion Card’s Pressure
Input is reading a value below the 4-20
Pressure Low Setpoint. In either case,
“Auto Restart” is set to “Off”.
Verify proper settings and check wiring.
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