50 VAV-SVX07F-EN
Troubleshooting
This section provides information about:
• “Diagnostics”
• “Troubleshooting Procedures,” p. 51
WARNING
Live Electrical Components!
During installation, testing, servicing, and troubleshooting of this product, it may be 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. Failure to follow all electrical safety precautions when exposed to live components could
result in death or serious injury.
Diagnostics
Table 13. Controller Diagnostics
Diagnostic Air Valve Fan Reheat
Discharge air temperature failure (space
temperature control)
Normal Normal Normal
Discharge air temperature failure (ventilation
flow control wi
thout reheat)
Normal Do not care Do not care
Discharge air temperature failure (ventilation
flow control wi
th reheat)
Closed Do not care Off
Discharge air temperature failure (flow tracking
control)
Normal Do
not care Do not care
Low airflow (space temperature control) Normal Normal
Local electric heat is Off; local
hydroni
c and all remote heat is
normal
Low airflow (ventilation flow control) Normal Do not care
Local electric heat is Off; local
hydr
onic is normal; remote is Don't
Care
Supply air temperature failure (space
temperature c
ontrol)
Normal Normal
Local electric heat is Off
(a)
; local
hydronic and all remote heat is
normal
Supply air temp
erature failure (ventilation flow
control)
Normal Do
not care Normal
Supply air temperature failure (flow tracking
control)
Normal Do
not care Do not care
Space temperature fail (space temperature
control)
(b)
Occupied: cool minimum flow
setpoint Unoccupied: closed
Series fan enabled;
parallel fan Off
Off
Space temperature fail (ventilation flow
control)
(b)
Normal Do not care Normal
Space temperature fail (flow tracking control)
(b)
Normal Do not care Do not care
Local setpoint failure Normal Normal Normal
Flow sensor failure or flow sensor calibration
failure (space tem
perature control)
Normal pressure dependent control Normal Normal
Flow sensor failure or flow sensor calibration
failure (venti
lation flow control)
Normal pressure dependent control Do not care Normal
Flow sensor failure or flow sensor calibration
failure (flo
w tracking control)
If the configured airflow tracking
offset is
positive, configure
maximum airflow If the configured
airflow tracking offset is negative,
configure minimum airflow
Do not care Do not care
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