Crestron CHV-THSTAT Operation And Installation Manual page 92

Thermostats
86 • Thermostats: CHV-TSTAT and CHV-THSTAT
Crestron CHV-TSTAT and CHV-THSTAT
Troubleshooting continued
TROUBLE
Wide temperature
variance in single-
setpoint auto mode
Heating/Cooling not
operating in single-
setpoint auto mode
Displays Error
Message and
equipment not
operating
Wrong temperature
displayed
Displays "NetDown"
Cannot leave setup
Cannot enter Auto
mode
Cresnet Balance
Point values out of
range
Reports
CHV-THSTATA or
CHV-TSTATA in
Viewport
Temperature offset
value not affecting
Cresnet outputs
Cannot change
screens or setpoints
POSSIBLE CORRECTIVE ACTION
CAUSE(S)
Auto deadband Adjust auto deadband setting in
setting too high setup
20-minute system Adjust auto deadband and
toggling lockout anticipator settings for smoother
operation
Temperature Refer to "Local Error Messages"
sensors are on page 84
disabled or have
failed
Bad Check wiring – Use low
communications capacitance twisted-pair wiring
Wrong units Select F or C as necessary
Incorrect sensor Check sensor setup
setup
Temperature Reset Temperature Offset
Offset
Bad location Ensure that thermostat is located
out of direct sunlight, drafts,
doorways, skylights, and
windows
No Crestron Check ID in program
program or the
Fix program, if one is needed
program does not
have a device at
this net address
included in this
system
Sensor Ensure sensor setup meets
configuration not system requirements.
valid Refer to Sensor Setup screen
Auto mode Select "N" for the Disable Auto
disabled in setup Mode item on the "Other
Settings" setup page
Values of -1, 91F Verify intended balance point
represent "Off" settings
settings
Running firmware None (name adjustment was
version 2.x or required for SIMPL Windows)
higher
Offset is only
Add offset in SIMPL program
added to
"RegulationTemp"
Local operation
Remove lockout from network
locked out
Operations and Installation Guide – DOC. 8163C