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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.