Troubleshooting - Honeywell RTH8500 Serie Guide D'installation Rapide

Advanced Installation Guide

Troubleshooting

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
Cannot change
system setting
to Cool
Fan does not
turn on when
heat is required
"Wait" appears
on the screen
Heat pump
issues cool air
in heat mode, or
warm air in cool
mode
69-2219EF—03
batteries are properly installed
(see page 7).
• Check Function 0170: System
Type to make sure it is set to
match your heating and cooling
equipment (see page 16).
• Check Function 0180: Heating
Fan Control to make sure it is set
to match your heating equipment
(see page 17).
• Compressor protection feature is
engaged. Wait 5 minutes for the
system to restart safely, without
damage to the compressor.
• Check Function 0190: Heat Pump
Changeover Valve to make sure
it is properly configured for your
system (see page 17).
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