Trane Horizon OADG Series Installation, Operation And Maintenance Manual page 69

Table 14. Diagnostic values
Name
BV-01 Diagnostic: Supply Fan Failure
Diagnostic: Discharge Air
BV-02
Humidity Source Failure
Diagnostic: Outdoor Air Damper
BV-03
End Switch
Diagnostic: Discharge Air
BV-06
Temperature Source Failure
BV-08 Diagnostic: Fire Shutdown
Diagnostic: Low Discharge Air
BV-10
Temp Lockout
Diagnostic: Space Temperature
BV-11
Source Failure
Diagnostic: Outdoor Air
BV-13
Temperature Source Failure
Diagnostic: Outdoor Air Humidity
BV-14
Source Failure
Diagnostic: High Discharge Air
BV-15
Temp Lockout
OAU-SVX006E-EN
Manual or Auto Reset
Manual Reset. Occurs when the
supply fan is commanded on but
the proving switch does not close
after two minutes
Auto Reset. Occurs when the
discharge air humidity sensor falls
outside of range
Auto Reset. Occurs when there is a
call for the two-position outdoor air
damper but the end switch has no
made for 180 seconds
Auto Reset. Occurs when the
discharge air temperature sensor
falls outside of range
Auto Reset. Diagnostic from BAS
communication. Unit resets once
this returns to normal
Manual Reset. Occurs when the
discharge air temperature is below
35°F for five minutes, or ten
minutes during heat pump defrost
mode
Auto Reset. Occurs when the space
temperature active falls outside of
range
Auto Reset. Occurs when the
outdoor air humidity active falls
outside of range
Auto Reset. Occurs when the
outdoor air temperature active falls
outside of range
Manual Reset. Occurs when the
discharge air temperature is above
130°F for five minutes
Alarms and Troubleshooting
Possible Causes
• VFD not operating OA and/or RA dampers not operating
properly
• Indoor Fan Motor Failure
• Indoor Fan Failure Switch IFFS (pressure) failure
• IFFS tubing damaged or not properly connected
• BAS communication down
• Failed sensor or improper sensor installation
• Humidity Wiring Polarity sensitive
• No voltage on actuator
• Failed OAD power transformer
• No continuity thru end switch ( check at UC)
• BAS Communication Down
• Failed sensor or improper sensor installation
• BAS only
• Heat Overridden OFF
• Compressor(s) Overridden ON
• Setpoint Failures Incorrect
• DAT sensor malfunction
• BAS communication down
• Failed sensor or improper sensor installation
• BAS Communication Down
• Failed sensor or improper sensor installation
• BAS communication down
• Failed sensor or improper sensor installation
• Humidity Wiring Polarity sensitive
• Heat Overridden ON
• Low discharge air volume
• Dirty Air filters
• High gas heater manifold pressure
• OA/RA damper position incorrect
• High temp limit not properly installed or wired
• DAT sensor malfunction
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