10
Indoor Unit Front Panel
To clean the front panel on the indoor unit, wipe the outside with
a soft, dry cloth.
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.
System Operation Recommendations
The items outlined in the following list help to assure proper
system operation:
S
Replace both remote control batteries at the same time.
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Point the remote control toward the unit display panel when
transmitting a command.
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Keep doors and windows closed while unit is operating.
S
Contact an authorized service representative if a problem arises
that cannot be easily resolved.
S
Do not perform cleaning or maintenance activities while the
unit is on.
S
Keep the display panel on the unit away from direct sunlight
and heat as this may interfere with remote control
transmissions.
S
Do not block air intakes and outlets on the indoor or outdoor
units.
Energy Saving Recommendations
The following recommendations adds greater efficiency to the
ductless system:
S
Select a comfortable thermostat setting and leave it at chosen
setting. Avoid continually raising and lowering the setting.
S
Keep the filter clean. Frequent cleaning may be necessary
depending on indoor air quality.
S
Use drapes, curtains or shades to keep direct sunlight from
heating the room on very hot days.
S
Limit the unit’s run time by using the
TIMER
function.
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Do not obstruct the air intake on the front panel.
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Turn on the air conditioning unit before the indoor air becomes
too uncomfortable.
Troubleshooting
Refer to Table 3 before contacting your local dealer.
Table 2 – Periodic Maintenance
INDOOR UNIT
EVERY MONTH
EVERY 6 MONTHS
EVERY YEAR
Clean Air Filter*
Replace Carbon Filter
Change Remote Control Batteries
S
S
S
S
OUTDOOR UNIT
EVERY MONTH
EVERY 6 MONTHS
EVERY YEAR
Clean Outdoor Coil from Outside
Clean Outdoor Coil from Inside†
Blow Air Over Electric Parts†
Check Electric Connection Tightening†
Clean Fan Wheel†
Check Fan Tightening†
Clean Drain Pans†
S
S
S
S
S
S
S
* Increase frequency in dusty zones.
{
Maintenance to be carried out by qualified service personnel. Refer to the Installation Manual
Table 3 – Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
Unit/System Does Not Work
The circuit breaker has tripped or a fuse
has blown.
Power failure.
Diagnostic lights illuminate.
*
Voltage is too low.
Reset the circuit breaker or replace the fuse with
the specified replacement fuse.
Restart operation when the power is restored.
Call your service representative.
Call your service representative.
Cooling is Not Working
Properly
The filter is blocked with dust.
Temperature is not set properly.
A window or door is open.
The outdoor unit is obstructed.
The fan speed is too low.
The operation mode is in Fan instead of
Cool.
Clean the air filter.
Check the temperature and reset if necessary.
Close the window or door.
Remove the obstruction.
Change the fan speed selection.
Change the operating mode to Cool or reset the
unit.
Heating is Not Working
Properly
The filter is blocked with dust.
Temperature is set too low.
A window or door is open.
The outdoor unit is obstructed.
Clean the air filter.
Check the temperature and reset if necessary.
Close the window or door.
Remove the obstruction.
Unit Stops During Operation
The Off timer is not operating correctly.
Diagnostic lights illuminate.
*
Restart the operating mode.
Call your service representative.
* Diagnostic lights are a combination of lights that will illuminate in the display area on the unit. They are a combination of the lights you see during normal
operation.
Copyright 2015 Carrier Corporation
S
7310 W. Morris St.
S
Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No:OM---40MBF---38MAQ---02
Replaces: 40MBF--- 01OM
Edition Date: 10/15
