Manual 2100-746D
Page
57 of 59
Low Temp Alarm
This alarm indicates that there is a lower space temperature than is
desired. The space temperature should be verified and compared to the
controller reading. If the space temperature reading is incorrect ensure
there is no offset applied and then the wiring to the temperature sensors
installed should be verified. If wiring is verified and sensor reading is still
low then sensor replacement may be required. If the space temperature is
low then a heating unit malfunction or inadequate heating capacity should
be investigated.
High Temp Alarm 1
This alarm indicates that the space temperature has risen higher than
desired. The space temperature should be verified and compared to the
controller reading. If the space temperature reading is incorrect ensure
there is no offset applied and then the wiring to the temperature sensors
installed should be verified. If wiring is verified and sensor reading is still
high then sensor replacement may be required. If the space temperature is
proven to be higher than desired malfunction of the cooling equipment or
lack of cooling capacity should be investigated.
High Temp Alarm 2
This alarm indicates that the space temperature has risen higher than
desired. The space temperature should be verified and compared to the
controller reading. If the space temperature reading is incorrect ensure
there is no offset applied and then the wiring to the temperature sensors
installed should be verified. If wiring is verified and sensor reading is still
high then sensor replacement may be required. If the space temperature is
proven to be higher than desired malfunction of the cooling equipment or
lack of cooling capacity should be investigated.
Emergency Off Alarm
This alarm indicates that the continuity between the Emergency Off inputs
has been broken. The function of the device connected to the Emergency
Off inputs should be verified first. If all device functionality is correct and
the alarm is still present the wiring between the device and controller
should be checked. Prior to replacing the I/O board all wiring should be
removed from the Emergency Off inputs and replaced with a jumper. This
should clear the alarm if the board and software are functioning properly.
Generator Run Alarm
This alarm indicates that the Generator Run inputs have continuity. The
function of the device connected to the Generator Run inputs should be
verified first. If all device functionality is correct and the alarm is still
present the wiring between the device and controller should be checked.
Prior to replacing the I/O board all wiring should be removed from the
Generator Run inputs. This should clear the alarm if the board and software
are functioning properly.
Service Alarm (Units 1-6)
This alarm indicates that the Filter inputs for the unit indicated have
continuity. The function of the device connected to the Filter inputs should
be verified first. If all device functionality is correct and the alarm is still
present the wiring between the device and controller should be checked.
Prior to replacing the I/O board all wiring should be removed from the
Filter inputs. This should clear the alarm if the board and software are
functioning properly.
Theft Alarm
This alarm indicates that the Theft inputs have continuity. The function
of the device connected to the Theft inputs should be verified first. If
all device functionality is correct and the alarm is still present the wiring
between the device and controller should be checked. Prior to replacing the
I/O board all wiring should be removed from the Theft inputs. This should
clear the alarm if the board and software are functioning
Troubleshooting Alarms
