Problem Solving; Troubleshooting - Crestron CHV-TSTAT Operation And Installation Manual

Thermostats
Sensor Setup Related Digital Joins (continued)
Signal Name
OMIT_LOC_HUM_F
OMIT_R1_HUM_F
OMIT_R2_HUM_F
R1_H_OUTDOOR_F
R2_H_OUTDOOR_F

Problem Solving

32 • Thermostats: CHV-TSTAT and CHV-THSTAT
Crestron CHV-TSTAT and CHV-THSTAT
Symbol I/O
Advanced Output
Advanced Output
Advanced Output
Advanced Output
Advanced Output

Troubleshooting

The table below provides corrective action for possible trouble situations. If further
assistance is required, please contact a Crestron customer service representative.
CHV-TSTAT/CHV-THSTAT Troubleshooting
TROUBLE
No display No power from
system
Incorrect mounting to
backplate
Heating/Cooling No power to
system not thermostat
operating*
Thermostat minimum
off times operating
both systems
Indicator displays Fan turns on when
Heat On, but no furnace reaches
heat from register setpoint
Cannot change The upper or lower
temperature temperature limits
setting were reached.
Furnace cycles too Anticipator setting
quickly too low
High temperature Anticipator setting
variance too high
*H1, H2, C1, C2 may appear but the system will not activate until the 5 minute timer guards
have been satisfied.
Definition
Asserted when Omitting built in hum sensor (THSTAT)
Asserted when Omitting remote 1 humidity sensor
Asserted when Omitting remote 2 humidity sensor
Asserted when remote 1 humidity sensor is outdoor
Asserted when remote 2 humidity sensor is outdoor
POSSIBLE CORRECTIVE ACTION
CAUSE(S)
Check for +24V on pins 24(C)
and 24(R)
Check thermostat mounting
Check circuit breaker
Check 24V connection at
thermostat and at furnace/air
conditioner
Recheck wiring connections
Wait 5 minutes
Wait five minutes, then recheck
registers.
Setpoint heat range is 38 – 90º F
(3-38º C).
Setpoint cool range is 59-100º F
(15 – 38º C)
Reprogram anticipator. Refer to
"Thermostat Setup" on page 14
Reprogram anticipator. Refer to
"Thermostat Setup" on page 14
Operations and Installation Guide – DOC. 8163