Carrier 48FC Series Controls, Start-Up, Operation And Troubleshooting page 32

FAULT OR ALERT
F010--- MBB LOW VOLTAGE
F011--- MBB REFERENCE VOLTAGE
A012--- MBB ZERO CROSSING
F013--- MBB FUSE 2 OPEN
F014--- MBB FUSE 3 OPEN
A015--- MBB RNET VOLTAGE RANGE
A016--- MBB 24VDC RANGE
A017--- MBB 5VDC RANGE
F018--- MBB EEPROM FAILURE
A019--- MBB CLOCK FAILURE
F020--- SOFTWARE ERROR
A100--- SAT SENSOR ERROR
A101--- FST SENSOR RANGE
A102--- FST OPEN SENSOR
A103--- FST SHORTED SENSOR
A104--- OAT SENSOR RANGE
A105--- OAT OPEN SENSOR
A106--- OAT SHORTED SENSOR
A107--- RAT SENSOR RANGE
A108--- RAT OPEN SENSOR
A109--- RAT SHORTED SENSOR
A110--- SPT SENSOR RANGE
A111--- SPT OPEN SENSOR
A112--- SPT SHORTED SENSOR
A130--- CIR.A SSP SENSOR RANGE
A131--- CIR.A SSP OPEN SENSOR
A132--- CIR.A SSP SHORT SENSOR
A133--- CIR.A SDP SENSOR RANGE
A134--- CIR.A SDP OPEN SENSOR
A135--- CIR.A SDP SHORT SENSOR
A150--- OUTDOOR AIRFLOW IN CFM OPEN
SENSOR
A151--- OUTDOOR AIRFLOW IN CFM
SHORTED SENSOR
A160--- OARH OPEN SENSOR
A161--- OARH SHORTED SENSOR
A162--- RARH OPEN SENSOR
A163--- RARH SHORTED SENSOR
A164--- IAQ OPEN SENSOR
A165--- IAQ SHORTED SENSOR
A166--- OAQ OPEN SENSOR
A167--- OAQ SHORTED SENSOR
A168--- SPACE RELATIVE HUMIDITY OPEN
SENSOR
A169--- SPACE RELATIVE HUMIDITY
SHORTED SENSOR
A170--- ECON FEEDBACK RANGE
A171--- ECON FEEDBACK OPEN
A172--- ECON FEEDBACK SHORTED
A190--- TSTAT HEAT/COOL CALLS
A191--- TSTAT IMPROPER COOL
A192--- TSTAT IMPROPER HEAT
F200--- FIRE SHUTDOWN
F201--- CONDENSATE OVERFLOW
A203--- DIRTY FILTER
F204--- REMOTE SHUTDOWN
F205--- IDF MANUAL LIMIT TRIP
F206--- PHASE MONITOR TRIP
Table 12 – SystemVut Controller Alarm Codes
ACTION TAKEN BY RESET
CONTROL METHOD
Unit Shutdown Automatic
Unit Shutdown Automatic
Alert Generated Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Alert Generated Automatic
4---20mA inputs will be in error Automatic
Transducer inputs will be in error Automatic
Unit Shutdown Automatic
No time, date, and schedule Automatic
operation
Unit Shutdown Automatic
No free cooling, and no SAT Automatic
limit protection
Alert Generated Automatic
Alert Generated Automatic
Alert Generated Automatic
No free cooling, no low Automatic
ambient operation
No free cooling, no low Automatic
ambient operation
No free cooling, no low Automatic
ambient operation
No differential DB crossover Automatic
No differential DB crossover Automatic
No differential DB crossover Automatic
No heating or cooling Automatic
No heating or cooling Automatic
No heating or cooling Automatic
Shutdown Circuit A Automatic
Shutdown Circuit A Automatic
Shutdown Circuit A Automatic
Shutdown Circuit A Automatic
Shutdown Circuit A Automatic
Shutdown Circuit A Automatic
No OACFM Operations Automatic
No OACFM Operations Automatic
No Enthalpy crossover Automatic
No Enthalpy crossover Automatic
No Differential Enthalpy Automatic
crossover
No Differential Enthalpy Automatic
crossover
No IAQ Operations Automatic
No IAQ Operations Automatic
No OAQ Operations Automatic
No OAQ Operations Automatic
No dehumidifying Automatic
No dehumidifying Automatic
No economizer diagnostics Automatic
No economizer diagnostics Automatic
No economizer diagnostics Automatic
Run unit in mode activated first Automatic
Run cooling per number of Automatic
active inputs
Run heating per number of Automatic
active inputs
Unit Shutdown Automatic
Cooling Shutdown Automatic
Alert Generated Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
Unit Shutdown Automatic
PROBABLE CAUSE
Brownout condition, low supply voltage, supply power missing a phase.
MBB failure or supply voltage low
MBB failure or supply voltage frequency to high or too low.
A switch input has a wiring error or the switch pulled too much current.
A switch input has a wiring error or the switch pulled too much current.
MBB failure or supply voltage low
MBB failure or supply voltage low
MBB failure or supply voltage low
Software failure or MBB failure
Software failure or MBB failure
Corrupt Software or software failure
Faulty, shorted, or open thermistor caused by wiring error or loose connection.
Faulty or incorrect thermistor caused by improper ohm reading
Missing or open thermistor caused by wiring error or loose connection.
Faulty or shorted thermistor caused by wiring error or loose connection.
Faulty or incorrect thermistor caused by improper ohm reading
Missing or open thermistor caused by wiring error or loose connection.
Faulty or shorted thermistor caused by wiring error or loose connection.
Faulty or incorrect thermistor caused by improper ohm reading
Missing or open thermistor caused by wiring error or loose connection.
Faulty or shorted thermistor caused by wiring error or loose connection.
Faulty or incorrect thermistor caused by improper ohm reading
Missing or open thermistor caused by wiring error or loose connection.
Faulty or shorted thermistor caused by wiring error or loose connection.
Faulty transducer, faulty 5--- V power supply, or loose connection
Faulty transducer, faulty 5--- V power supply, or loose connection
Faulty transducer, faulty 5--- V power supply, or loose connection
Faulty transducer, faulty 5--- V power supply, or loose connection
Faulty transducer, faulty 5--- V power supply, or loose connection
Faulty transducer, faulty 5--- V power supply, or loose connection
Wiring problem, or configuration error
Wiring problem, or configuration error
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, or sensor configured incorrectly.
Bad sensor, bad wiring, sensor configured incorrectly, loss of communication
to SIOB.
Bad sensor, bad wiring, sensor configured incorrectly, loss of communication
to SIOB.
Wiring problem with actuator, or configuration error
Wiring problem with actuator, or configuration error
Wiring problem with actuator, or configuration error
Bad Thermostat or Thermostat Wiring
Bad Thermostat or Thermostat Wiring
Bad Thermostat or Thermostat Wiring
Smoke detected by smoke detector
Dain pan plugged, sensor error, or configuration error
Dirty Filter or filter timer expired
Remote activation of the shutdown switch
Limit Switch on Indoor Fan trips due to high temperature at the motor
Power supply phase missing or out of phase
32