Honeywell FocusPRO TH5220D - In case of difficulty; Troubleshooting: System not responding; Troubleshooting: Flashing Cool On;Heat On

Operating Manual
12
Heating or
cooling system
does not respond
• Press
SSYYSSTTEEMM
button to set system to Heat. Make sure the temperature
is set higher than the Inside temperature.
• Press
SSYYSSTTEEMM
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.
In case of difficulty
“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 (see page 9).