Carrier 48/50PG C03-14, 48/50PM C16-28 manual ComfortLinkt Alarm Codes cont, 48/50PG and PM

Table 12 — ComfortLinkt Alarm Codes (cont)

48/50PG and PM

ALARM
OR		DESCRIPTION
ALERT
NUMBER
A154		Serial EEPROM Hardware Failure
T155		Serial EEPROM Storage Failure Error
A156		Critical Serial EEPROM Storage Fail Error
A157		A/D Hardware Failure
A163		Circuit A Down Due to Failure
		Service Test - Circuit A Down Due to Failure
A164		Circuit B Down Due to Failure
		Service Test - Circuit B Down Due to Failure
A165		Circuit C Down Due to Failure
		Service Test - Circuit C Down Due to Failure
T173		Loss of communication with the Energy
		Management Module
T179		Loss of communication with the Economizer
		Control Board
T180		Loss of communication with the Economizer
		Actuator
T181		Loss of communication with Outside Air Unit
A200		Linkage Timeout Error - Comm Failure
A404		Fire Shutdown
T408		Dirty Air Filter
		Fan Status Switch ON, fan commanded off
T409
		Fan Status Switch OFF, fan commanded on
		R-W1 Jumper Not Installed in Space Temp Mode
T410		R-W1 Jumper Must Be Installed to Run Heat In
		Service Test
T411		Thermostat Y2 Input Activated without Y1 Activated
T412		Thermostat W2 Input Activated without W1
		Activated
T413		Thermostat Y and W Inputs Activated
		Simultaneously
		Economizer Damper Actuator Out of Calibration
		Economizer Damper Actuator Torque Above Load
		Limit
T414		Economizer Damper Actuator Hunting Excessively
		Economizer Damper Stuck or Jammed
		Economizer Damper Actuator Mechanical Failure
		Economizer Damper Actuator Direction Switch
		Wrong
T415		IAQ Input Out of Range
T416		OAQ Input Out of Range
		OAU Motor Failure
T418		OAU Dirty Filter
		OAU Low CFM
		OAU General Alarm
LEGEND
ECB	-	Economizer Control Board
IGC	-	Integrated Gas Controller
MBB	-	Main Base Board
OAT	-	Outdoor-Air Thermistor

ACTION TAKEN BY	RESET	PROBABLE CAUSE
CONTROL	METHOD
Unit Shutdown	Automatic	Software failure or MBB failure
Unit operation errors	Automatic	Software failure or MBB failure
Unit Shutdown	Automatic	Software failure or MBB failure
Unit Shutdown	Automatic	Software failure or MBB failure
Lockout Circuit A	Manual	Circuit has 3 strikes or has been locked out by another alarm
Lockout Circuit B	Manual	Circuit has 3 strikes or has been locked out by another alarm
Lockout Circuit C	Manual	Circuit has 3 strikes or has been locked out by another alarm
No action	Automatic	MBB Software failure, reload software or replace board
No economizer operation	Automatic	Communication wiring problem with ECB or faulty MBB or ECB
No economizer operation	Automatic	Communication wiring problem with actuator.
Reset OAU data	Automatic	Wiring Problem or OAU communication failure
No Linkage Operation fall	Automatic	Received a table write from Linkage before, now not receiving
back to local SPT		any linkage commands
Unit Shutdown	Automatic	Smoke detected by smoke detector
Alert Generated	Automatic	Dirty Filter
	If IDF.F =
If IDF.F = Yes, then Unit	YES, then
	Manual,	Bad Fan Status Switch. Configuration incorrect.
Shutdown
	otherwise
	automatic
	If IDF.F =
If IDF.F = Yes, then Unit	YES, then	Tripped Circuit Breaker. Broken belt. Bad indoor fan motor.
	Manual,
Shutdown		Configuration incorrect. Bad fan status switch.
	otherwise
	automatic
Unable to run heat	Automatic	Missing jumper wire
Unable to Test Heat Outputs	Automatic	Missing jumper wire
Run unit as if Y2 and Y1 are	Automatic	Bad Thermostat or Thermostat Wiring
On
Run unit as if W2 and W1 are	Automatic	Bad Thermostat or Thermostat Wiring
On
Run unit in mode activated	Automatic	Bad Thermostat or Thermostat Wiring
first
Alert Generated	Automatic	Calibrate economizer (E.CAL). If problem still exist then
		determine what is limiting economizer rotation.
Alert Generated	Automatic	Actuator load too high. Check damper load.
Alert Generated	Automatic	Damper position changing too quickly.
Alert Generated	Automatic	No economizer motion. Check damper blades, gears, and
		actuator.
Alert Generated	Automatic	Check actuator and replace if necessary.
Alert Generated	Automatic	Actuator direction control switch (CCW, CW) wrong.
No IAQ Operations	Automatic	Bad sensor, bad wiring, or sensor configured incorrectly.
No OAQ Operations	Automatic	Bad sensor, bad wiring, or sensor configured incorrectly.
Alert generated	Automatic	Check OAU motors for failure
Alert generated	Automatic	Check/change OAU filters
Alert generated	Automatic	Check OAU air flow
Alert generated	Automatic	Check OAU

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