39
A166-OAQ OPEN SENSOR No OAQ Operations Automatic Bad sensor, bad wiring, or incorrectly configured sensor.
A167-OAQ SHORTED SENSOR No OAQ Operations Automatic Bad sensor, bad wiring, or incorrectly configured sensor.
A168-SPACE RELATIVE
HUMIDITY OPEN SENSOR
No dehumidifying Automatic
Bad sensor, bad wiring, incorrectly configured sensor, loss of
communication to SIOB.
A169-SPACE RELATIVE
HUMIDITY SHORTED SENSOR
No dehumidifying Automatic
Bad sensor, bad wiring, incorrectly configured sensor, loss of
communication to SIOB.
A170-ECON FEEDBACK RANGE No economizer diagnostics Automatic Wiring problem with actuator or configuration error.
A171-ECON FEEDBACK OPEN No economizer diagnostics Automatic Wiring problem with actuator or configuration error.
A172-ECON FEEDBACK
SHORTED
No economizer diagnostics Automatic Wiring problem with actuator or configuration error.
A190-TSTAT HEAT/COOL CALLS Run unit in mode activated first Automatic Bad thermostat or thermostat wiring.
A191-TSTAT IMPROPER COOL
Run cooling per number of
active inputs
Automatic Bad thermostat or thermostat wiring.
A192-TSTAT IMPROPER HEAT
Run heating per number of
active inputs
Automatic Bad thermostat or thermostat wiring.
F200-FIRE SHUTDOWN Unit Shutdown Automatic Smoke detected by smoke detector.
F201-CONDENSATE OVERFLOW Cooling Shutdown Automatic Drain pan plugged, sensor error, or configuration error.
A203-DIRTY FILTER Alert Generated Automatic Dirty filter or expired filter timer.
F204-REMOTE SHUTDOWN Unit Shutdown Automatic Remote activation of the shutdown switch.
A210-GENERAL STATUS Alert Generated Automatic General switch activation or wrong configuration.
F211-GENERAL STATUS Unit Shutdown Automatic General switch activation or wrong configuration.
F310-CIR.A DOWN DUE TO FAIL Shutdown Circuit A Manual
Compressors have 3 strikes or has been locked out by another
alarm.
F311-CIR.A LOW CHARGE Shutdown Circuit A Manual Low refrigerant or faulty pressure transducer.
A312-CIR.A UNEXPECTED OFF Strike for active compressors Automatic
Compressor failure, transducer failure, or nuisance operating
conditions.
A313-CIR.A HIGH DISCHARGE
Unload compression and up
ODF to High cool speed
Automatic
An overcharged system, high outdoor ambient temperature
coupled with dirty outdoor coil, plugged filter drier, or ODF
speeds being set too low.
A314-CIR.A HPS TRIP Add compressor strikes Automatic
An overcharged system, high outdoor ambient temperature
coupled with dirty outdoor coil, plugged filter drier, or ODF
speeds being set too low.
A315-CIR.A LOW DISCHARGE Add compressor strikes Automatic
An undercharged system, low outdoor ambient temperature
coupled with dirty outdoor coil, plugged filter drier, or ODF
speeds being set too high
A316-CIR.A LOW SUCTION Add compressor strikes Automatic
Low refrigerant charge, dirty filters, evaporator fan turning
backwards, loose or broken fan belt, plugged filter drier, faulty
transducer, excessively cold return air, or stuck open
economizer when the ambient temperature is low.
A317-CIR.A PRESSURE RATIO Add compressor strikes Automatic
Low refrigerant charge, plugged filter drier, faulty transducer,
the ambient temperature is low and the ODFs are running too
fast.
F318-COMPRESSOR STUCK ON Unit in Safety Shutdown Manual Welded contactor or frozen compressor relay on MBB.
F319-C.A1 DOWN DUE TO FAIL Lockout Compressor A1 Manual
Compressor A1 has 3 strikes or has been locked out by
another alarm.
A320-C.A1 REVERSE ROTATION Add Strike for compressor A1 Automatic Wiring causing reverse rotation or faulty compressor.
A321-C.A1 FAIL TO PRESSURE Add Strike for compressor A1 Automatic Wiring causing reverse rotation or faulty compressor.
F322-C.A2 DOWN DUE TO FAIL Lockout Compressor A2 Manual
Compressor A2 has 3 strikes or has been locked out by
another alarm.
A323-C.A2 REVERSE ROTATION Add Strike for compressor A2 Automatic Wiring causing reverse rotation or faulty compressor.
A324-C.A2 FAIL TO PRESSURE Add Strike for compressor A2 Automatic Wiring causing reverse rotation or faulty compressor.
A410-IGC IGNITION FAILURE Lockout Heat Automatic Faulty wiring of the IGC, no gas flow, or wrong configuration.
F411-ROLLOUT WITHOUT HEAT Unit in Safety Shutdown Automatic
Faulty wiring of the IGC, or rollout switch trip without a heat
call.
F412-RUN AWAY HEAT Unit in Safety Shutdown Automatic Heat stuck on causing high SAT, or low air flow.
A510-INDOOR FAN STATUS Alert Generated Automatic Belt broke, motor failure, or configuration error.
F511-IDF OFF WHEN COMMAND
ON
Unit Shutdown Manual Fan stuck on or incorrect configuration.
F512-IDF ONWHEN COMMAND
OFF
Unit Shutdown Manual
Tripped circuit breaker, broken belt, bad indoor fan motor, or
incorrect configuration.
F600-IDF VFD COMMUNICATION Unit Shutdown Automatic
Communication failure, noise on the bus, wiring error, or
configuration error.
F601-IDF VFD UNEXPECTED Unit Shutdown Automatic VFD fault, refer to VFD section.
F602-IDF VFD LOCKOUT Unit Shutdown Power Cycle Cycle VFD locked itself out.
A603-IDF VFD IN HAND Alert Generated Automatic VFD keypad used to put the VFD in hand or off mode.
F604-IDF VFD IN HAND Unit Shutdown Automatic VFD keypad used to put the VFD in hand or off mode.
A605-IDF VFD THERMAL
WARNING
IDF speed reduced Automatic Motor improper size, motor overload, or configuration errors.
Table 16 — SystemVu™ Controller Alarm Codes (cont)
FAULT OR ALERT
ACTION TAKEN
BY CONTROL
RESET
METHOD
PROBABLE CAUSE
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