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Installation Guide
24
In case of difficulty
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is blank • Make sure fresh AAA alkaline batteries are properly installed (see
page 13).
Cannot change
system setting
to Cool
• Check Function 0170: System Type to make sure it is set to match
your heating and cooling equipment (see page 18).
Fan does not
turn on when
heat is required
• Check Function 0180: Heating Fan Control to make sure it is set to
match your heating equipment (see page 19).
“Wait” appears
on the screen
• Compressor protection feature is engaged. Wait 5 minutes for the
system to restart safely, without damage to the compressor.