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Table 12 — ComfortLinkt Alarm Codes (cont)
ALARM
OR
ALERT
NUMBER
DESCRIPTION
ACTION TAKEN BY
CONTROL
RESET
METHOD
PROBABLE CAUSE
A154 Serial EEPROM Hardware Failure Unit Shutdown Automatic Software failure or MBB failure
T155 Serial EEPROM Storage Failure Error Unit operation errors Automatic Software failure or MBB failure
A156 Critical Serial EEPROM Storage Fail Error Unit Shutdown Automatic Software failure or MBB failure
A157 A/D Hardware Failure Unit Shutdown Automatic Software failure or MBB failure
A163
Circuit A Down Due to Failure
Lockout Circuit A Manual Circuit has 3 strikes or has been locked out by another alarm
Service Test - Circuit A Down Due to Failure
A164
Circuit B Down Due to Failure
Lockout Circuit B Manual Circuit has 3 strikes or has been locked out by another alarm
Service Test - Circuit B Down Due to Failure
A165
Circuit C Down Due to Failure Lockout Circuit C Manual Circuit has 3 strikes or has been locked out by another alarm
Service Test - Circuit C Down Due to Failure
T173
Loss of communication with the Energy
Management Module
No action Automatic MBB Software failure, reload software or replace board
T179
Loss of communication with the Economizer
Control Board
No economizer operation Automatic Communication wiring problem with ECB or faulty MBB or ECB
T180
Loss of communication with the Economizer
Actuator
No economizer operation Automatic Communication wiring problem with actuator.
T181 Loss of communication with Outside Air Unit Reset OAU data Automatic Wiring Problem or OAU communication failure
A200 Linkage Timeout Error - Comm Failure
No Linkage Operation fall
back to local SPT
Automatic
Received a table write from Linkage before, now not receiving
any linkage commands
A404 Fire Shutdown Unit Shutdown Automatic Smoke detected by smoke detector
T408 Dirty Air Filter Alert Generated Automatic Dirty Filter
T409
Fan Status Switch ON, fan commanded off
If IDF.F = Yes, then Unit
Shutdown
If IDF.F =
YES, then
Manual,
otherwise
automatic
Bad Fan Status Switch. Configuration incorrect.
Fan Status Switch OFF, fan commanded on
If IDF.F = Yes, then Unit
Shutdown
If IDF.F =
YES, then
Manual,
otherwise
automatic
Tripped Circuit Breaker. Broken belt. Bad indoor fan motor.
Configuration incorrect. Bad fan status switch.
T410
R-W1 Jumper Not Installed in Space Temp Mode Unable to run heat Automatic Missing jumper wire
R-W1 Jumper Must Be Installed to Run Heat In
Service Test
Unable to Test Heat Outputs Automatic Missing jumper wire
T411 Thermostat Y2 Input Activated without Y1 Activated
Run unit as if Y2 and Y1 are
On
Automatic Bad Thermostat or Thermostat Wiring
T412
Thermostat W2 Input Activated without W1
Activated
Run unit as if W2 and W1 are
On
Automatic Bad Thermostat or Thermostat Wiring
T413
Thermostat Y and W Inputs Activated
Simultaneously
Run unit in mode activated
first
Automatic Bad Thermostat or Thermostat Wiring
T414
Economizer Damper Actuator Out of Calibration Alert Generated Automatic
Calibrate economizer (E.CAL). If problem still exist then
determine what is limiting economizer rotation.
Economizer Damper Actuator Torque Above Load
Limit
Alert Generated Automatic Actuator load too high. Check damper load.
Economizer Damper Actuator Hunting Excessively Alert Generated Automatic Damper position changing too quickly.
Economizer Damper Stuck or Jammed Alert Generated Automatic
No economizer motion. Check damper blades, gears, and
actuator.
Economizer Damper Actuator Mechanical Failure Alert Generated Automatic Check actuator and replace if necessary.
Economizer Damper Actuator Direction Switch
Wrong
Alert Generated Automatic Actuator direction control switch (CCW, CW) wrong.
T415 IAQ Input Out of Range No IAQ Operations Automatic Bad sensor, bad wiring, or sensor configured incorrectly.
T416 OAQ Input Out of Range No OAQ Operations Automatic Bad sensor, bad wiring, or sensor configured incorrectly.
T418
OAU Motor Failure Alert generated Automatic Check OAU motors for failure
OAU Dirty Filter Alert generated Automatic Check/change OAU filters
OAU Low CFM Alert generated Automatic Check OAU air flow
OAU General Alarm Alert generated Automatic Check OAU
LEGEND
ECB - Economizer Control Board
IGC - Integrated Gas Controller
MBB - Main Base Board
OAT - Outdoor-Air Thermistor
48/50PG and PM