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1. SELECT THE MODE (cont.)
• HEAT OR COOL (AUTO-CHANGEOVER) – HEAT or COOL appears on the display. Either
the heating or cooling equipment will operate to maintain the room temperature at or
above the HEAT setting and at or below the COOL setting. HEAT or COOL will flash when
the respective equipment is operating.
• EMERGENCY HEAT (EM. HEAT
for heat pump equipment only) –
EM. HEAT appears on the display
and only the back-up heat source
will be operated to maintain the
room temperature above the
HEAT setting. This is generally
more expensive than using the
heat pump (HEAT MODE), so
use accordingly. Typical usage
is when the heat pump has
malfunctioned.
• HEAT – HEAT appears on the
display and only the heating
equipment will be operated to
maintain the temperature at the
HEAT setting. HEAT will flash
on the main display when the
heating equipment is operating.
COOL
EM. HEAT
HEAT
HEAT OR COOL
OFF
HEAT
EM.
HEAT
HEAT
R
COOL
O
FIGURE 3
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