Honeywell RTH1100 Quick Installation Manual page 21

Troubleshooting
Heating or
cooling sys-
tem does not
respond
or
is flashing
• Move SYSTEM switch to set
system to Heat. Make sure the
temperature is set higher than
the Inside temperature.
• Move SYSTEM switch 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.
19
RTH1100
69-2446EF—01