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669-1629–1
TROUBLESHOOTING GUIDESymptom Action
Heating or Cooling does
not come on.
Check that the System key on the thermostat is set to Heat
or Cool.
Check if the circuit breaker is tripped–reset the circuit breaker.
Check if the fuse is blown–replace the fuse.
Check for air movement at the register.
Check power to the heating or cooling equipment.
Temperature setting is too
wram or cool. Adjust the temperature by pressing either the ▲ or ▼ key.
System on indicator
( = heat, = cool) is
lit, but no warm or cool air
is coming from the
registers.
Wait five minutes after seeing the flame or snowflake and check
the registers again. If no there is no hot or cool air coming from
the registers, refer to Heating or Cooling does not come on. If all
these actions were checked, contact your local heating and
cooling contractor.