Carrier 40MAHB Owner's Manual page 12

Pre-Season Inspection
After long periods of non-use, or before periods of frequent use,
perform the following steps:
Check for damaged wires
Check for leaks
Make sure nothing is blocking all air inlets and outlets
Fig. 16 — Pre-Season Inspection
Preparing for Extended Shutdown Period
Clean the filters and reposition them in the unit. Operate the unit in
FAN ONLY mode for 12 hours to dry all internal parts. Turn main
power supply off and remove batteries from the remote control.
Clean all filters
Turn off the unit and
disconnect the power
Fig. 17 — Extended Shutdown Period Steps
12
Clean all filters
Replace batteries
Turn on FAN function until
unit dries out completely
Remove batteries
from remote control
Specifications subject to change without notice.
System Operation Recommendations
The items outlined in the following list help to assure proper system
operation:
• Replace both remote control batteries at the same time.
• Point the remote control toward the unit display panel when
transmitting a command.
• Keep doors and windows closed while unit is operating.
• Contact an authorized service representative if a problem
arises that cannot be easily resolved.
• Do not perform cleaning or maintenance activities while the
unit is on.
• Keep the display panel on the unit away from direct sunlight
and heat as this may interfere with remote control
transmissions.
• Do not block air intakes and outlets on the indoor or outdoor
units.
Energy Saving Recommendations
The following recommendations will add greater efficiency to the
ductless system:
• Select a comfortable thermostat setting and leave it at chosen
setting. Avoid continually raising and lowering the setting.
• Keep the filter clean. Frequent cleaning may be necessary
depending on indoor air quality.
• Use drapes, curtains or shades to keep direct sunlight from
heating the room on very hot days.
• Limit the unit's run time by using the TIMER function.
• Do not obstruct the air intake on the front panel.
• Turn on the air conditioning unit before the indoor air
becomes too uncomfortable.
OM-40MAHB-01