Honeywell 69-1490 - Manual (Page 10)

10 69-1490
Troubleshooting Guide
CAUTION
To avoid possible equipment damage, do not operate
cooling when outside temperature is below 50
° F
(10 ° C). See equipment manufacturer instructions.
Heating or cooling
does not come on. • Check that the SYSTEM switch
on the thermostat is set to Heat
or Cool.
• Check the system fuse or circuit
breaker and replace or reset if
necessary.
• Check for air movement at the
register.
• Check power to the heating or
cooling equipment.
Temperature setting
is too warm or cool. • Adjust the temperature by
pressing either the ▲ or ▼ key.