Page 31
Troubleshooting Tips (Continued)
If . . . Then . . .
Cooling system
does not turn on.
Set the system to Cool by pressing the
SYSTEM key.
Check the cool temperature setting to be
sure it is set below the room temperature
and Cool On" is displayed solidly on the
screen.
Check the circuit breaker to make sure it
is not tripped.
Check the power switch at the heating
and/or cooling system to make sure it is on.
Check the furnace door to make sure it
is closed securely.
Wait five minutes for the cooling system
to respond.
If the problem has not been identified
and corrected, contact a qualified service
technician.
Cannot set System
setting to Cool.
Check Installer Set−Up Number 170: Heating
and/or Cooling Type*. Make sure the setting
matches the installed heating and/or cooling
system.
"Heat On" is not dis-
played on the
screen.
Set the System setting to Heat and set the
temperature setting above the room temper-
ature. If Heat On" is shown solidly in the
display, but the heating system does not turn
on, see Heating system does not turn on"
suggestions on the previous page.
"Cool On" is not dis-
played on the
screen.
Set the System setting to Cool and set the
temperature setting below the room temper-
ature. If Cool On" is shown solidly in the
display, but the cooling system does not turn
on, see Cooling system does not turn on"
suggestions at the top of this page.
*Refer to Installation Instructions for access to Installer Set−Up pro-
cedures.
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