Troubleshooting - Honeywell RTH7500 Series Quick Installation Manual

Quick 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
Cannot change system
setting to Cool
Fan does not turn on when
heat is required
Heating system is running
in cool mode
Heating or cooling system
does not respond
Heat On / Cool On
flashing on the screen
Heat pump issues cool air
in heat mode, or warm air
in cool mode
If you're using batteries, make sure fresh AA alkaline batteries are
properly installed (see page 6).
Check System Setup Option 220 to make sure the options are set
to either 1 or 2 (see page 9).
Check System Setup Option 205 to make sure it is set to match
your heating equipment (see page 8).
Check System Setup Option 200 or 218 to make sure it is set to
match your heating and cooling equipment (see page 9).
Press System to set system to Heat. Make sure the temperature is
set higher than the Inside temperature.
Press System to set system to Cool. Make sure the temperature is
set lower than the Inside temperature.
Check circuit breaker and reset if necessary.
Make sure power switch at heating & cooling system is on.
Make sure furnace door is closed securely.
Wait 5 minutes for the system to respond.
Compressor protection feature is engaged. Wait 5 minutes for the
system to restart safely, without damage to the compressor.
Check System Setup Option 200 or 218 to make sure it is set to
match your heating and cooling equipment (see page 9).
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