GE AZ85E09DAC Technical Service Manual page 19

Operation
ON/OFF Switch
WARNING: ON/OFF switch does not disconnect
power from all circuits.
The ON/OFF switch is located on the electronics
cover behind the front case panel. The ON/OFF
switch disables all relays, but does not disconnect
power from all circuits. No functions are available
when the switch is off.
Ventilation Control
The ventilation control lever is located on the left
side of the Zoneline unit, behind the front case
panel.
When the lever is in the CLOSE position, only air
inside the room is circulated and fi ltered.
When the lever is in the OPEN position, some
outdoor air will be drawn into the room. This will
reduce the heating or cooling effi ciency.
2SHQ
9HQW FRQWURO SXVK
OHYHU GRZQ DQG
SXOO IRUZDUG RU
EDFN WR RSHUDWH
About Heat Pumps
Heat pumps can reduce operating costs by
exchanging heat from the outside air-even when the
outside temperature is below freezing-and releasing
that heat indoors.
To get the best economic benefi t from the heat
pump, don't change the room thermostat setting
very often. Raising the heat setting 2-3 degrees
will cause the Zoneline to use its electric heating
elements in order to reach the new temperature
setting quickly.
There is a 3-minute minimum compressor run time
at any setting to prevent short cycling.
212))
The indoor fan motor starts before the compressor
VZLWFK
starts, and stops after the compressor cycles off.
The electric heating elements use much more
electricity than heat pumps and cost more to
operate.
Do Not Operate the Air Conditioner (cool
mode) in Freezing Outdoor Conditions
Air conditioners are not designed for use when
freezing outdoor conditions exist. They must not be
used in freezing outdoor conditions.
&ORVH
– 19 –
(on some models)
(Continued next page)