Honeywell CT3400 Programming And Installation Instructions page 34

Heating will not come on.
Cooling will not come on.
■ Check the fuse or circuit breaker and replace or reset if neces-
sary. If display is blank or says REPL BAT, install fresh batteries.
■ Check that switch on thermostat is set to HEAT.
■ If temperature setting is higher than current temperature, and
display says HEAT ON, contact Honeywell Customer Assis-
tance at 1-800-468-1502.
■ Check the fuse or circuit breaker and replace or reset if neces-
sary. If display is blank or says REPL BAT, install fresh batteries.
■ Check that switch on thermostat is set to COOL.
■ The thermostat has a built-in time delay on cooling. Allow up to
ten minutes after changing the setting before the air conditioner
starts.
■ If temperature setting is lower than current temperature, and
display says COOL, move system switch from COOL to OFF for
ten minutes. After ten minutes, return the switch to the COOL
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