Honeywell RTH6400 Owner's Manual - Page 25

RTH6400, 2210EF-03 - reset

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SETUP WIRING Troubleshooting RTH6400 Heating or • Press SYSTEM button to set system cooling system to Heat. Make sure the temperature does not is set higher than the Inside respond temperature. • Press SYSTEM button 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. "Cool On" or "Heat On" is flashing • Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor. Heat pump • Check Function 2: Heat Pump issues cool air Changeover Valve to make sure in heat mode, it is properly configured for your or warm air in system (see page 15). cool mode ASSISTANCE TROUBLESHOOTING 23 69-2210EF-03

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RTH6400
23
69-2210EF—03
Troubleshooting
SETUP
WIRING
ASSISTANCE
TROUBLESHOOTING
Heating or
cooling system
does not
respond
•
Press
SYSTEM
button to set system
to Heat. Make sure the temperature
is set higher than the Inside
temperature.
•
Press
SYSTEM
button 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.
“Cool On” or
“Heat On” is
flashing
•
Compressor protection feature is
engaged. Wait 5 minutes for the
system to restart safely, without
damage to the compressor.
Heat pump
issues cool air
in heat mode,
or warm air in
cool mode
•
Check
Function 2: Heat Pump
Changeover Valve to make sure
it is properly configured for your
system (see page 15).