Troubleshooting - Honeywell RTH8580WF User Manual

Troubleshooting

If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is
blank
Cannot change
system setting
to Cool
Fan does
not turn on
when heat is
required
"Wait" appears
on the screen
69-2715ES—01
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating and cooling system is on.
• Make sure furnace door is closed securely.
• Make sure C wire is connected (see page 15).
• Check Function 0170: System Type to make sure it is set to match your
heating and cooling equipment (see page 54).
• Check Function 0180: Heating Fan Control to make sure it is set to match
your heating equipment (see page 55).
• Compressor protection feature is engaged. Wait 5 minutes for the system to
restart safely, without damage to the compressor.
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