30
Troubleshooting
Symptom
Remedy
No display
Check for 24 VAC at thermostat; display is blank when 24 VAC is not present.
System fan does not come on properly
Verify wiring is correct, check heat source (Gas/Electric) in Configuration
(see Section 7, Page 14).
No response with first button press
Press
to activate touch icons.
Program schedule activates at wrong time
Check time (AM/PM) set on thermostat (see Setting the Time & Date, Page 22).
Thermostat turns on/off too frequently
Adjust temperature differential (see Configuration Mode Setting, Pages 12-13).
Thermostat does not follow program
Verify the schedule is on
: check time (AM/PM); check if in program override.
Fan runs continuously
Press
and set to auto
.
is continuous run.
Room temperature is not correct
Calibrate thermostat (see Configuration Mode Setting, Section 17, Page 17).
If remote sensor is used, check S1 and S2 terminal connections.
LOCK
displays when any button is
pressed
Thermostat has the button lockout function activated
(see Lockout & Unlock Feature, Page 11).
on display instead of room
temperature
Check for a bad connection at S1 and S2 terminals, if used
(see Configuration Mode Setting, Section 19, Pages 18).
Heat or Cool not coming on
Verify wiring is correct, gently pull on each wire to verify there is a good connection at
terminal block.
Remote Sensor
displays
Check remote sensors temperature at
,
,
MENU
VIEW
,
.
OVERRIDE
displays
Program schedule is in temporary override, it will return to schedule at next transition time.
Thermostat ID location
The thermostat ID is attached to the front of this book, as well as on the back of the
thermostat above the terminals.
not displayed on thermostat
Reconnect thermostat as if for the first time.
No outputs activate upon power-up
Upon Power-up the thermostat will not activate outputs for four minutes. To bypass the
output lockout, change the setpoint temperature in heat or cool mode on the thermostat,
by the temperature differential.
