Honeywell RTH6400 Thermostat User Manual


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Advanced Installation Guide
69-2210EF—03 24
Troubleshooting
SETUPWIRINGASSISTANCETROUBLESHOOTING
Heating
and cooling
equipment
running at the
same time (or
heat does not
turn off)
• CheckFunction 1: System Type to
make sure it is set to match your
heating and cooling equipment
(see page 14).
• Grasp and pull thermostat away
from wallplate. Check to make sure
bare wires are not touching each
other (see page 6).
Heating system
is running in
cool mode
• CheckFunction 1: System Type to
make sure it is set to match your
heating and cooling equipment
(see page 14).
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