VAV-SVP01A-EN
85
Troubleshooting
Diagnostic Table
Table 16, p. 85
shows the VAV VV550/551 Controller diagnostics.
Table 16. Controller diagnostics
Diagnostic
Air valve
Fan
Reheat
Invalid unit configuration
(a)
0 VDC
0 VDC
0 VDC
Controller failure
Closed
Off
Off
Discharge air temperature failure (space temperature control)
Normal
Normal
Normal
Discharge air temperature failure (ventilation flow control without
reheat)
Normal
Don't care
Don't care
Discharge air temperature failure (ventilation flow control with
reheat)
Closed
Don't care
Off
Discharge air temperature failure (flow tracking control)
Normal
Don't care
Don't care
Low airflow (space temperature control)
Normal
Normal
Local electric heat is Off;
local hydronic and all remote
heat is normal
Low airflow (ventilation flow control)
Normal
Don't care
Local electric heat is Off;
local hydronic is normal;
remote is Don't care
Primary air temperature failure (space temperature control)
Normal
Normal
Local electric heat is Off
(b)
;
local hydronic and all remote
heat is normal
Primary air temperature failure (ventilation flow control)
Normal
Don't care
Normal
Primary air temperature failure (flow tracking control)
Normal
Don't care
Don't care
Space temperature fail (space temperature control)
(c)
Occupied: cool minimum
flow setpoint Unoccupied:
closed
Series fan enabled;
parallel fan Off
Off
Space temperature fail (ventilation flow control)
(c)
Normal
Don't care
Normal
Space temperature fail (flow tracking control)
(c)
Normal
Don't care
Don't care
Local setpoint failure
Normal
Normal
Normal
Flow sensor failure or flow sensor calibration failure (space
temperature control)
Normal pressure
dependent control
Normal
Normal
Flow sensor failure or flow sensor calibration failure (ventilation flow
control)
Normal pressure
dependent control
Don't care
Normal
Flow sensor failure or flow sensor calibration failure (flow tracking
control)
If the configured airflow
tracking offset is positive,
configure maximum
airflow. If the configured
airflow tracking offset is
negative, configure
minimum airflow
Don't care
Don't care
Freeze protection active (ventilation flow control)
Closed
Off
Off
Thumbwheel in */** position (single star position)
Minimum airflow
Normal
Normal
Thumbwheel in */** position (double star position)
Maximum airflow
Normal
Normal
Normal
Normal
Normal
Normal
(a) When the unit configuration is invalid, all outputs are de-energized (0 VDC) so that they return to their normal state.
(b) If system mode is heat or auto with a warm or hot primary air temperature.
(c) When a temperature sensor fails after being valid, the controller generates a diagnostic to indicate the sensor loss condition. The controller automatically
clears the diagnostic once a valid sensor temperature value is present (non-latching diagnostic).
Содержание VAV VV550 LonTalk
Страница 1: ...May 2010 VAV SVP01A EN Installation Operation Programming VAV VV550 LonTalk Controller...
Страница 17: ...VAV SVP01A EN 17 VAV Start Up Check Out Procedure Figure 2 VV550 single duct control diagram...
Страница 18: ...18 VAV SVP01A EN VAV Start Up Check Out Procedure Figure 3 VV550 fan powered control diagram...
Страница 107: ...VAV SVP01A EN 107 Troubleshooting Figure 59 VV550 single duct control diagram...
Страница 108: ...108 VAV SVP01A EN Troubleshooting Figure 60 VV550 fan powered control diagram...
Страница 110: ...110 VAV SVP01A EN Troubleshooting Figure 62 Single duct with three phase voltage electric heat...
Страница 112: ...112 VAV SVP01A EN Troubleshooting Figure 64 SCR PSC fan powered with three phase voltage electric heat...
Страница 114: ...114 VAV SVP01A EN Troubleshooting Figure 66 ECM fan powered with three phase voltage electric heat...
Страница 115: ......