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To Operate Harmony II
®
control:
Choose either Central or Zone mode.
Central Mode: Heating and cooling to all zones.
1− Press Central button on control panel.
2− Choose either Heat or Cool or Auto button on control panel.
3− Choose either Fan Auto or Fan On button on control panel. The Fan switch on all thermostats
will be inoperable. The fan is controlled at the control panel.
4− Set the zone 1 master thermostat at the same position (HEAT or COOL or AUTO) as the control
panel. If your thermostat system does not have an auto−changeover selection, set the control
panel in AUTO and the zone 1 thermostat in either HEAT or COOL. (Do not adjust other zone
thermostats since they are non−functional in Central mode.)
5− Set thermostat to desired room temperature.
Zone Mode: Heating and cooling to specific zones.
1− Press Zone button on control panel.
2− Choose either Heat or Cool or Auto button on control panel.
3− Choose either Fan Auto or Fan On button on control panel. The Fan switch on all thermostat will
be inoperable. The fan is controlled at the control panel.
4− Set each zone thermostat at the same position (HEAT or COOL or AUTO) as the control panel.
If your thermostats do not have an auto−changeover selection, set the control panel in AUTO
and the zone thermostats in either HEAT or COOL.
5− Set thermostats to desired room temperature.
Harmony II
®
Control Panel
Harmony II
Red service light flashes from be-
hind the control panel cover when
system requires service. Error
codes will be stored in control
center for readout by technician
only.
System Off button turns
off Harmony II control.
Press Central for all zones
to be conditioned at the
same time.
Press Zone for specific zones to
receive conditioned air upon
each zone’s need.
Press Cool to allow cooling only.
For Central mode, Zone 1 thermo-
stat should also be set at Cool. For
Zone mode, all thermostats should
also be set at Cool.
Press Auto to allow either cooling or
heating, depending on the need. For
Central mode, Zone 1 thermostat
should also be set at Auto. For Zone
mode, all thermostats should also be
set at Auto. If your thermostats are
not equipped with an Auto setting,
place control panel in Auto and ther-
mostats in either Heat or Cool.
Press Fan Auto to allow blower to run only while system is
supplying conditioned air. The blower will cycle on and off
according to the demand for heating or cooling. By cycling on
and off, air from different zones is not mixed and better effi-
ciencies are achieved.
Press Fan On to allow blower to run continuously to circulate air. The
fan will keep running in this mode until the Fan Auto button is
pressed. Fan On tends to mix the air from different zones and effi-
ciency may suffer if Fan On option is used on a regular basis.
Press Heat to allow heating only.
For Central mode, Zone 1 thermo-
stat should also be set at Heat. For
Zone mode, all thermostats should
also be set at Heat.