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