Honeywell RET97B5D User Manual page 69

Troubleshooting
Heating or
cooling system
does not
respond
Heating system
is running in
cool mode
• 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.
• If "Wait" is displayed, the compressor protection timer is on. Wait 5 minutes
for the system to restart safely, without damaging the compressor (see page
48).
• Check Function 0170: System Type to make sure it is set to match your
heating and cooling equipment (see page 54).
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