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10

Maintenance

WARNING!

Turn off all power to unit at unit disconnect switch or
circuit breaker before performing any maintenance 
procedures! Failure to follow this warning could 
lead to personal injury or death.

Coil fins are very sharp! Take care not to touch the fins
in order to avoid injury.

Indoor Unit Filters

The indoor unit filter should be cleaned every three months,
or more frequently, if necessary.

Follow the steps below and in the illustrations to clean the
filters.

1 −

Pivot indoor unit front panel out and up to access filters.

2 −

Gently pull each filter outward, then down to remove the
filters from the unit

3 −

Use a vacuum cleaner to remove dust and dirt from
each filter or wash the filters with warm water and a mild
detergent. Rinse filters thoroughly with clean water and
set aside to air dry.

CAUTION!

Do not use hot water to clean the filters. Exposure to
water temperatures above 113°F (45°C) will damage
filter media and frame.

4 −

Reinsert clean, dry filters and close unit front panel. Re-
store power to unit.

1

2

3

4

Indoor Unit

Check to make sure that there are no objects on top of unit or around unit that may be ob-
structing air flow. Check to make sure that indoor unit and wall bracket are secure and have
not been damaged. Use a clean, dry cloth to gently remove dust from the outer surface of the
indoor unit. The cloth may be slightly dampened with warm water, if necessary. Do not use
soap or other cleaners.

CAUTION!

Hot water, soaps or other cleaning agents may damage indoor unit cabinet or display
panel. Do not use hot water (above 113°F [45°C]). Cloth must be damp only −− NEVER
WET to avoid damage to display. Do not use soap or other cleaning agents (window
cleaner, abrasive cleansers, etc.) to clean the indoor unit cabinet.

Outdoor Unit

Check to make sure that there are no objects on top of unit or around unit that may be ob-
structing air flow. If the outdoor unit is installed on a wall bracket, make sure that bracket is
secure and has not been damaged. Use a clean, slightly dampened cloth to gently remove
dust from the outer surface of the outdoor unit. Do not use soap or other cleaners and DO
NOT spray water into unit.

WARNING!

SHOCK HAZARD! DO NOT SPRAY water into outdoor unit. Failure to follow this warn-
ing could lead to electrical shock, resulting in personal injury or death.

Summary of Contents for MS7

Page 1: ...is manual is the property of the homeowner and must be left with the user 2011 Lennox Industries Inc Dallas Texas USA MS7 Single Zone Mini Split System Air Conditioners and Heat Pumps 506789 01 08 201...

Page 2: ...perty damage personal injury or death For your safety and to fulfill the terms of the limited warranty a licensed professional service technician or equivalent must annually inspect this system This u...

Page 3: ...Tape e p i p n o i t c e n n o C Air inlet Typical indoor unit shown Actual unit may be slightly different Front Panel Display Air outlet Filter Directional Louver Wireless remote control Temperature...

Page 4: ...s fixed in a downward position In climates with very low winter temperatures it may be necessary to supplement heating by addi tional means space heater fireplace etc In heating mode the operating ran...

Page 5: ...mode and again for HEAT mode heat pumps only Selected mode is displayed on both remote and indoor unit cover panel buttons Use plus and minus buttons to adjust the temper ature setting up and down NOT...

Page 6: ...button to initi ate or cancel high speed fan operation to accelerate cooling or heating of the ambient room temperature The turbo icon is displayed when the function is turned on TEMP button Use the T...

Page 7: ...with the word ON flashing at the right Use the and keys to adjust the time setting to the desired time for the system to begin operation Press the TIMER ON button again to accept the setting When succ...

Page 8: ...speed will be set to low if DEHUMIDIFICATION mode has been selected 5 Press OSCILLATE button Indoor unit directional louver will open and begin to oscillate If a single setting is preferred press but...

Page 9: ...should not be placed in a drawer Make sure that there are no obstructions between the indoor unit receiver and the remote control Remote should remain within its receiving range to ensure proper syst...

Page 10: ...o make sure that there are no objects on top of unit or around unit that may be ob structing air flow Check to make sure that indoor unit and wall bracket are secure and have not been damaged Use a cl...

Page 11: ...oil when the outdoor unit starts or stops operation This is not a malfunction Mist is coming out of the indoor unit during cooling operation This sometimes happens when the indoor temper ature and hum...

Page 12: ...unit When this happens the unit will enter a defrost cycle The indoor fan is off during the 3 12 minute cycle In DEHUMIDIFICATION mode indoor fan opera tion may be stopped to avoid delivery of moist a...

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