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Troubleshooting
Live Electrical Components!
Failure to follow all electrical safety precautions when exposed to live electrical components
could result in death or serious injury.
When it is necessary to work with live electrical components, have a qualified licensed
electrician or other individual who has been properly trained in handling live electrical
components perform these tasks.
Diagnostics
Table 18. Controller diagnostics
Diagnostic
Discharge air temperature failure (space
temperature control)
Discharge air temperature failure
(ventilation flow control without reheat)
Discharge air temperature failure
(ventilation flow control with reheat)
Discharge air temperature failure (flow
tracking control)
Low airflow (space temperature control)
Low airflow (ventilation flow control)
Supply air temperature failure (space
temperature control)
Supply air temperature failure (ventilation
flow control)
Supply air temperature failure (flow
tracking control)
Space temperature fail (space
temperature control)
Space temperature fail (ventilation flow
control)
Space temperature fail (flow tracking
control)
Local setpoint failure
Flow sensor failure or flow sensor
calibration failure (space temperature
control)
Flow sensor failure or flow sensor
calibration failure (ventilation flow control)
Flow sensor failure or flow sensor
calibration failure (flow tracking control)
58
(b)
(b)
(b)
WARNING
Air Valve
Fan
Normal
Normal
Normal
Do not care
Closed
Do not care
Normal
Do not care
Normal
Normal
Normal
Do not care
Normal
Normal
Normal
Do not care
Normal
Do not care
Occupied: cool minimum
Series fan
flow setpoint Unoccupied:
enabled; parallel
closed
fan Off
Normal
Do not care
Normal
Do not care
Normal
Normal
Normal pressure dependent
Normal
control
Normal pressure dependent
Do not care
control
If the configured airflow
tracking offset is positive,
configure maximum airflow If
Do not care
the configured airflow
tracking offset is negative,
configure minimum airflow
Reheat
Normal
Do not care
Off
Do not care
Local electric heat is Off; local
hydronic and all remote heat
is normal
Local electric heat is Off; local
hydronic is normal; remote is
Don't Care
Local electric heat is Off
(a)
;
local hydronic and all remote
heat is normal
Normal
Do not care
Off
Normal
Do not care
Normal
Normal
Normal
Do not care
BAS-SVX091A-EN
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Table of Contents
Troubleshooting
