Honeywell CT3455 - Manual (Page 18)

31 69-0733—3
Heating does not come on. ■ Check that switch on thermostat is set to HEAT.
■ Check the system fuse or circuit breaker and replace or reset if
necessary. If display is blank or displays REPL BAT, install
fresh batteries.
■ Check for correct wiring and good connections.
■ Jumper wires R and W. If heat does not come on, contact your
heating dealer.
■ If temperature setting is higher than current temperature, and
HEAT ON is displayed, contact Honeywell Customer Assis-
tance at 1-800-468-1502.
Cooling does not come on. ■ Check that switch on thermostat is set to COOL.
■ Check the system fuse or circuit breaker and replace or reset if
necessary. If display is blank or displays REPL BAT, install
fresh batteries.
■ Check for correct wiring and good connections.
32 69-0733—3
■ Jumper wires Rc and Y. If cooling does not come on, contact
your cooling dealer.
■ The thermostat has a built-in time delay on cooling. Allow up to
ten minutes after changing the setting before the air conditioner
starts.
■ Make sure outdoor disconnect is energized (on).
■ If temperature setting is lower than current temperature, and
COOL is displayed, move system switch from COOL to OFF for
ten minutes. After ten minutes, return the switch to the COOL
position. If your air conditioner comes on, this indicates your
compressor may have reached its high limit temperature
protection and shut down. If your air conditioner does not
come on after ten minutes and COOL is displayed, contact
Honeywell Customer Assistance at 1-800-468-1502.
■ If 2- or 4-wire installation, verify that R-Rc jumper is installed.
The house is too warm or ■ Press CURRENT SETTING to check the current temperature
too cool. setting.
■ If desired, change the temperature setting. See page 15.