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Troubleshooting Guide (continued)
IF… THEN…
Heating unit does not
come on.
• Check that the thermostat is set to heat. If it is not, press the
Heat/Cool key until the display indicates HEAT.
• If the temperature setting is higher than current temperature,
and display indicates HEAT, contact your energy utility.
• Heat pump thermostats have a built-in five minute time delay
for heating. After changing the setting, the thermostat delays
before starting the heating to prevent equipment damage.
Cooling does not come on.
• Check that the thermostat is set to cool. If it is not, press the
Heat/Cool key until the display indicates COOL.
• Check the fuse or circuit breaker and replace or reset, if
necessary.
• The thermostat has a built-in five minute time delay for cooling.
After changing the setting, the thermostat delays before
starting the cooling to prevent equipment damage.