Csc400 Controller Shutdown Display Codes - ACL CSC400 Installation And Operation Manual

CSC400 Controller Shutdown Display Codes

The following table provides a summary of all the possible Shutdown Display codes that the user may see on the CSC400
Controller's 4-line LED display.
LED Display Indicator
Common Operational /
Shutdown Messages
(Shutdown line only)
PWR Fail
FF
OFF
TC1 OPEN
TC2 OPEN
TC3 OPEN
POC
RemStop
High Gas
Low Gas
Level
Aux 1
Aux 2
Hi Temp
HT TC3
Name Description and/or Corrective Action if Necessary
Power Fail / Power Indicates there was a power failure on the main input power to the
Fail Latch controller. Seen if the Power Fail Latch menu setting is set to
Latched and a power failure occurs. Pressing the Stop then Start
buttons, or a toggling of the Modbus Remote Stop/Start power rung is
required to reset this condition.
Flame Fail Indicates that the pilot has gone out and/or failed to re-light. "FF" will
flash on the bottom right part of the display beside the respective
ignitor ("1:" or "2:") indicating Flame Fail status.
Press the Stop then Start buttons, toggle the Remote Start/Stop switch,
or send Modbus Remote Stop then Start commands to retry the
ignition sequence.
Power is Off Indicates that the system is in the Off state (Stop button was pressed,
Modbus Remote Stop command received).
TC1 is Open TC1 thermocouple is currently open. Check TC1 thermocouple and
terminal connections.
TC2 is Open TC2 thermocouple is currently open. Check TC2 thermocouple and
terminal connections.
TC3 is Open TC3 thermocouple is currently open. Check TC3 thermocouple and
terminal connections.
Proof of Closure Indicates that the "POC" input is open, preventing power from going
to the ignition module and allowing the system to start.
Remote Stop Indicates that the "Remote Start/Stop" input terminals are in the Off
or Stop (open) position. Jumper with a wire jumper when not used.
High Gas Indicates that the "High Gas Shutdown" switch inputs (or terminals)
Shutdown are open (in shutdown). Jumper with a wire jumper when not used.
Low Gas Indicates that the "Low Gas Shutdown" switch inputs (or terminals)
Shutdown are open (in shutdown). Jumper with a wire jumper when not used.
Level Shutdown Indicates that the "Level Shutdown" switch inputs (or terminals) are
open (in shutdown). Jumper with a wire jumper when not used.
Auxiliary 1 Indicates that the " Auxiliary 1 Shutdown" switch inputs (or
Shutdown terminals) are open (in shutdown). Jumper with a wire jumper when
not used.
Auxiliary 2 Indicates that the " Auxiliary 2 Shutdown" switch inputs (or
Shutdown terminals) are open (in shutdown). Jumper with a wire jumper when
not used.
High Temperature Indicates that the measured temperature on TC2 is at or above the
Shutdown TC2 setpoint, thereby shutting off all solenoid valve outputs (Pilot,
Main, T/Main) for both Ignitor output blocks.
May also indicate that the system is in High Temp Latch mode if the
"HT Latch" menu option is Enabled. Pressing the Stop then Start
buttons, or issuing Modbus Remote Stop then Start commands is
required to reset this condition.
High Temperature Indicates that the measured temperature on TC3 is at or above the
Auxiliary TC3 setpoint, thereby shutting off all solenoid valve outputs (Pilot,
Shutdown - TC3 Main, T/Main) for both Ignitor output blocks.
This will only be seen if the menu option " TC3 AUX HT SD" is set
to "Yes" and if TC3 is enabled.
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