MrCool Olympus Series User manual

Please read this manual carefully before installation and keep it for future reference.
Please keep this manual where the operator can easily find it. Inside, you
will find helpful hints on how to use and maintain your unit properly.
For more info visit www.mrcool.com
If used as MULTI unit, please refer to the Installation & operation manuals packed with outdoor unit.
User Manual
Olympus Series
Cassette Air Handlers

Contents
Page 1 mrcool.com
Safety Precautions
Hints for Economical Operation
Part Names
Cassette Type
High-static Pressure Parvis Split Type
Duct and Ceiling Type
For Slim Duct Type
For Slim Duct (with air inlet box) Type
Four-way Cassette (slim) Type
One-way Cassette Type
Ceiling & Floor Type (Vertical Discharge Air Conditioner)
Ceiling & Floor Type
Ceiling & Floor Type
Ceiling & Floor Type
Ceiling & Floor Type
Manual Operation
Adjusting Air Flow Direction
Maintenance
Air Conditioner Operations and Performance
Special Functions
Installation
Troubleshooting
Remote Control Troubleshooting
!
1
2
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
21
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23
24

Page 2
Safety Precautions
mrcool.com
Read Before Using
Incorrect usage may cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
CAUTION
WARNING
DO NOT attempt to service the unit yourself. This unit has no user serviceable components. Opening or
removing the cover will expose you to dangerous voltage. Tuning off the power supply will not prevent
potential electric shock.
DO NOT use liquid cleaners or aerosol cleaners, use a soft and dry cloth for cleaning the unit. To avoid
electric shock, never attempt to clean the units by sprinkling water.
DO NOT put hands or objects into the Air Outlet of indoor or outdoor units. These units are installed with
a fan running at high speed. To touch the moving fan will cause serious injury.
• To avoid the risk of serious electrical shock, never sprinkle or spill water or liquids on unit.
• Ventilate the room regularly while the air conditioner is in use, especially if there is also a gas appliance
in use in this room, failure to follow these directions may result in a loss of oxygen in the room.
• To prevent electric shock, turn off the power or disconnect the power supply plug before beginning any
cleaning or other routine maintenance. Follow the directions for cleaning in the Owner's Manual.
This symbol indicates ignoring instructions may cause death or serious injury.
This symbol indicates that ignoring instructions may cause moderate injury
to your person, damage to your unit, or other property.
This symbol indicates that you should NEVER perform the indicated action.
!
Safety Precautions
CAUTION
DO NOT use caustic household drain cleaners in the unit. Drain cleaners can quickly destroy the unit
components (drain pan and heat exchanger coil etc).
DO NOT attempt to install this unit by yourself. This unit requires installation by qualified persons.
For proper performance, operate the unit in temperature and humidity ranges indicated in this owner's
manual. If the unit is operated beyond these conditions, it may cause malfunctions of the unit or dew
dripping from the unit.
Danger
No
Thinner
No
Household
Drain
Cleaner

Installation Summary
Page 3 mrcool.com
1
Hints for Economical Operation
The following should be noticed to ensure optimal economical operation.
(Refer to corresponding chapter for more details)
• Adjust the air flow direction properly to avoid winding toward your body.
• Adjust the room temperature properly to maintain a comfortable temperature and to avoid supercooling or
superheating.
• While cooling, close the curtains to avoid direct sunlight.
• To keep cool or warm air in the room, refrain from opening and closing doors or windows more often than
necessary. Set the timer for the desired operating time.
• Clear any obstructions from the vicinity of the air outlet or the air inlet. Obstructions will cause lower efficiency,
or sudden stop in operation.
• If you do not plan to use the unit for a long time, disconnect the power and remove the batteries from the
remote control. When the power switch is connected, some energy will be consumed, even if the air
conditioner isn't in operation. Once you plan to use the unit again, switch the power on 12 hours before you
restart the unit to ensure a smooth operation.
• Clean the air filter bi-weekly. A clogged air filter will reduce cooling or heating efficiency.

Part Names
Page 4mrcool.com
2
The air conditioner consists of the indoor unit, the outdoor unit, the connecting pipe
and the remote controller.
Display Panel
Cassette Type
or
Indoor Unit
Air Flow Louver
(at air outlet)
Air Outlet
Remote
Control
Outdoor Unit
Outdoor Unit
Temporary Button
Operation
Lamp
Connecting
Pipe
Infrared
Signal
Receiver
Alarm
Indicator
Timer
Indicator *Pre-Def
Indicator
Drain
Hose
Air Inlet
(with air
filter in it)
Air In
Air In
Air In
Air
Out
Air
Out
Air Out
*Drain Pump
Air
Out
*PRE-DEF indicator (cooling and heating type) or fan only indicator (cooling only type)
*Drain Pump - Drains water from the indoor unit
NOTE
This diagram is based on 24K Btu/h type. Minor differences may exist for the appearance and
functionality for your specific model.

Part Names
Page 5 mrcool.com
NOTE
This diagram is based on 24K Btu/h type. Minor differences may exist for the appearance and
functionality for your specific model.
High-Static Pressure Parvis Split Type
Display Panel
or
Indoor Unit
Remote
Control
Outdoor Unit
Outdoor Unit
Heat
Exchanger
Temporary Button
Operation
Lamp
Connecting
Pipe
Infrared
Signal
Receiver
Infrared Signal Receiver
Alarm
Indicator
Timer
Indicator
*Pre-Def
Indicator
Drain
Hose
E-Box Air Inlet Air In
Air In
Air
Outlet
Air Out
Air Out
*PRE-DEF indicator (cooling and heating type) or fan only indicator (cooling only type)

Part Names
Page 6mrcool.com
NOTE
In the case of "cooling only type", it is the "FAN ONLY" indicator.
This diagram is based on 24K Btu/h type. Minor differences may exist for the appearance and
functionality for your specific model.
The illustrations in this manual are for explanation purpose only. The unit may vary depending on
model.
Duct and Ceiling Type
or
Indoor Unit
Remote
Control
Outdoor Unit Outdoor Unit
Operation
Lamp
Connecting
Pipe
Infrared
Signal
Receiver
Alarm
Indicator
Manual
Button
Timer
Indicator
*Pre-Def
Indicator
Drain
Hose
Air Inlet
(with air
filter in it) Air Flow
Louver
(at air
outlet)
Air In
Air
Outlet
Air Out
Air In
Air In
Air Out
Display Panel

Part Names
Page 7 mrcool.com
NOTE
This diagram is based on 24K Btu/h type. Minor differences may exist for the appearance and
functionality for your specific model.
For Slim Duct Type
ﾎﾂｶﾈ ﾊｱﾖﾓ
ｷ醉ﾙ
ﾄ｣ﾊｽ
ｷ醉ﾙ
ｿｪ
ｹﾘ
ﾎﾂｶﾈ
ﾗﾔｶｯ
Display Panel
or
Indoor Unit
Remote
Control
Outdoor Unit
Outdoor Unit
Operation
Lamp
Connecting
Pipe
Connecting
Pipe
Infrared
Signal
Receiver
Alarm
Indicator
Temporary
Button
Timer
Indicator
*Pre-Def
Indicator
Drain
Hose
E-Box
Air In
Air
Outlet
Air Out
Air In
Air
Out
*PRE-DEF indicator (cooling and heating type) or fan only indicator (cooling only type)

Part Names
Page 8mrcool.com
NOTE
All the pictures in this manual are for explanation purpose only. There may be slight differences from
the air conditioner you purchased ( depending on model ). The actual shape may vary.
For Slim Duct (with air inlet box) Type
ﾎﾂｶﾈ ﾊｱﾖﾓ
ｷ醉ﾙ
ﾄ｣ﾊｽ
ｷ醉ﾙ
ｿｪ
ｹﾘ
ﾎﾂｶﾈ
ﾗﾔｶｯ
Display Panel
or
Indoor Unit
Remote
Control
Outdoor Unit
Outdoor Unit
Operation
Lamp
Heat
Exchanger
Connecting
Pipe
Infrared
Signal
Receiver
Alarm
Indicator
Temporary
Button
Timer
Indicator *Pre-Def
Indicator
Drain
Hose
E-Box
Air Inlet
Air Out
Air In
Air In
Air
Out
*PRE-DEF indicator (cooling and heating type) or fan only indicator (cooling only type)

Part Names
Page 9 mrcool.com
NOTE
The Run Lamp, Timer Indicator, and Defrost Indicator flash in cycles when solar PV ECO function is
activated. (Applicable to the unit adopts solar photovoltaic system only.)
This picture is based on the type of 18K Btu/h. The appearance and functionality may be slightly
different from the unit you purchased.
Four-way Cassette (slim) Type
Indoor Unit
Remote
Control
Outdoor Unit
Connecting
Pipe
Drain
Hose
Infrared
Signal
Receiver
Manual
button / SET
button
Manual
button / SET
button
Manual
button / SET
button
Infrared
Signal
Receiver
Infrared
Signal
Receiver
Timer
Indicator
Timer
Indicator Timer
Indicator
*Defrost
Indicator
Alarm
Indicator
Alarm
Indicator
Alarm
Indicator
*Defrost
Indicator
*Defrost
Indicator
Run
Lamp
Run
Lamp
Run
Lamp
Vertical
Louver
*Drain Pump
*Air Inlet Air
Outlet
Indoor Unit Assy
Outdoor Unit Assy
Control board
Inlet
Outlet
Manual
OPERATION
TIMER
DEF./FAN.
ALARM
SET
OPERATION TIMER
DEF./FAN.
ALARM
*Air Inlet (Air filter installed inside to prevent the dust)
*Drain Pump (Internal installed), water drain from indoor unit.
*Defrost indicator heating/cooling type or fan indicator (cooling only type)

Part Names
Page 10mrcool.com
One-way Cassette Type
OUTDOOR UNIT
DISPLAY PANEL
INDOOR UNIT
Outlet louver
Inlet
Filter
Display panel
Remote control
Refrigerant
connecting,
drain hose
pipe
Electric
wiring
Trap
Air
outlet
Air inlet
(side and
rear)
MANUAL
RUN FAN TIMERALARM
inlet
TEMP
CLOCK
SPEED
C
MODE
FAN
I
O
TEMP
inlet
outlet
MANUAL
RUN TIMER DEF ALARM
MANUAL
RUN TIMER FAN ALARM
Manual Button
Manual Button
Run
Lamp
Run
Lamp
*Fan
Indicator
Timer
Indicator
TIMER
Indicator
Alarm
Indicator
Alarm
Indicator
*Def
Indicator
Cooling-only type
Cooling & Heating type
*FAN indicator
(Cooling/Heating type without)
*DEF. indicator
(Cooling-only type without)
NOTE
All the pictures in this manual are for explanation purpose only. There may be slight differences from
the air conditioner you purchased ( depending on model ). The actual shape may vary.

Part Names
Page 11 mrcool.com
NOTE
All the pictures in this manual are for explanation purpose only. There may be slight differences from
the air conditioner you purchased ( depending on model ). The actual shape may vary.
Ceiling & Floor Type (Vertical Discharge Air Conditioner)
Display Panel
or
Indoor Unit
Air-in
Air-in
Air-in
Drain Hose
Outdoor Unit Outdoor Unit
Air Flow Louver
(at air outlet)
Air Inlet (with
air filter in it)
Installation Part
Remote Control
Connecting Pipe Infrared
Signal
Receiver
Operation Lamp
Timer Indicator
Alarm Indicator
Temporary Button
FAN/DEF Indicator
Air-out
Air-out
Air-out
*FAN/DEF indicator (For cooling and heating type, it’s DEF. For cooling only, it’s FAN.)

Part Names
Page 12mrcool.com
NOTE
The illustration is based on one model of our product for reference only. It may be different from the
unit you purchased.
Ceiling & Floor Type
Display Panel
or
Indoor Unit
Air-in
Drain Hose
Outdoor Unit
Air Flow Louver
(at air outlet)
Air Inlet (with air filter in it)
Installation Part
Remote Control
Connecting
Pipe
Infrared Signal
Receiver
Timer
Indicator
Temporary
Button
Alarm
Indicator
FAN/DEF
Indicator
Air-out
Temperature
Display
Operation
Lamp

Part Names
Page 13 mrcool.com
NOTE
All the pictures in this manual are for explanation purpose only. There may be slight differences from
the unit you purchased ( depending on model ). The actual shape may vary.
Ceiling & Floor Type
Display Panel
or
MANUAL
OPERATION
TIMER
DEF./FAN
ALARM
Indoor Unit
Air-in Air-in
Air-in
Drain Hose
Outdoor Unit Outdoor Unit
Air Flow Louver (at air outlet)
Air Inlet
(with air filter in it)
Installation Part
Remote Control
Connecting Pipe
Infrared Signal Receiver
Operation Lamp
Timer Indicator
Alarm Indicator
FAN/DEF indicator
Air-out
Air-out
Air-out
Temperature Display
Temporary Button
For cooling and heating type,
it’s DEF. For cooling only type,
it’s FAN.)

Part Names
Page 14mrcool.com
NOTE
All the pictures in this manual are for explanation purpose only. There may be slight differences from
the unit you purchased ( depending on model ). The actual shape may vary.
Ceiling & Floor Type
Display Panel
or
Indoor Unit
Air-in
Air-in
Air-in
Drain Hose
Outdoor Unit Outdoor Unit
Air Flow Louver
(at air outlet)
Air Inlet
(with air filter in it)
Installation Part
Remote Control
Connecting
Pipe
Infrared Signal Receiver
Operation Lamp
Timer Indicator
Temporary
Button
Alarm Indicator
FAN/DEF
Indicator
Air-out
Air-out
Air-out

Part Names
Page 15 mrcool.com
NOTE
All the pictures in this manual are for explanation purpose only. There may be slightly different from
the air conditioner you purchased ( depend on model ). The actual shape may vary.
Ceiling & Floor Type
Display Panel
or
Indoor Unit
Air Flow Louver
(at air outlet)
Air-In Air-In
Air-In
Drain Hose
Outdoor Unit Outdoor Unit
Air Inlet (with air filter in it)
Installation Part
Remote Control
Connecting Pipe
Operation Lamp
Timer Indicator
Manual Button
Warning Indicator
FAN/DEF Indicator
Air-Out Air-Out
Air-Out
Beep Indicator
Infrared Signal Receiver
Temporary Indicator

Manual Operation
Page 16mrcool.com
3
Ceiling & Floor
This function is used to operate the unit temporarily in case you misplace the remote control or its
batteries are exhausted. Two modes including AUTO and FORCED COOL can be selected through
the TEMPORARY BUTTON on the air-in grill control box of the indoor unit. Once you push this
button, the air conditioner will run in such order: AUTO, FORCED COOL, OFF, and back to AUTO.
AUTO
The OPERATION lamp is lit, and the air conditioner will run under AUTO mode. The remote
control operation is enabled to operate according to the received signal.
FORCED COOL
The OPERATION lamp flashes, the air conditioner will turn to AUTO after it is enforced to cool
with a wind speed of HIGH for 30 minutes. The remote control operation is disabled.
OFF
The OPERATION lamp goes off. The air conditioner is OFF while the remote control operation is
enabled.
1)
2)
3)
TEMPORARY
BUTTON
Four-way Cassette
This function is used to operate the unit temporarily in case you misplace the remote control or its
batteries are exhausted. Two modes including AUTO and mandatory COOL can be selected through
the TEMPORARY BUTTON on the air inlet grill control box of the indoor unit. Once you push this
button, the air conditioner will run in such order: AUTO, mandatory COOL, OFF, and back to AUTO.
AUTO
The OPERATION lamp is lit, and the air
conditioner will run under AUTO mode. The
remote control operation is enabled to operate
according to the received signal.
MANDATORY COOL
The OPERATION lamp flashes, the air conditioner
will turn to AUTO after it is enforced to cool with a
wind speed of HIGH for 30 minutes. The remote
control operation is disabled.
OFF
The OPERATION lamp goes off. The air
conditioner is OFF while the remote control
operation is enabled.
1)
2)
3)
Fig. 3.1

Adjusting Air Flow Direction
Page 17 mrcool.com
4
Cassette Type
While the unit is in operation, you can adjust the air flow louver to change the air flow direction and distribute
the room temperature evenly. This allows you to enjoy a comfortable room temperature.
1. Set the desired air flow direction.
Push the SWING button to adjust the louver to the desired position and push this button again to
maintain the louver at this position.
2. Adjust the air flow direction automatically.
Push the SWING button, the louver will swing automatically.
While this function is set, the swing fan of indoor unit runs; otherwise, the swing fan doesn't run. The
swing scale of every side is 30°. When the air conditioner isn't in operation (including when "TIMER
ON" is set), the SWING button will be disabled.
The following is how to adjust air flow direction when air outlet part (separately sold) is
used with the indoor unit.
Heating
Duct and Ceiling Type
Cooling
ADJUST IT UP AND DOWN
To effectively cool the whole room,
please set the louver so that the air can
come out horizontally.
To effectively heat the bottom of the
room, Please set the louver so that the
air can come out downwards.
Fig. 4.1
Fig. 4.2 Fig. 4.3

CAUTION
WARNING
Maintenance
Page 18mrcool.com
5
Before you clean the air conditioner, be sure to disconnect the power supply plug.
• Use a dry cloth to wipe the indoor unit and remote control.
•A cloth dampened with cold water may be used on the indoor unit if it is very dirty.
• Never use a damp cloth on the remote control.
Do not use a chemically-treated duster for wiping or leave such material on the unit for long,
because it may damage or fade the surface of the unit.
Do not use benzine, thinner, polishing powder, or similar solvents for cleaning. These may
cause the plastic surface to crack or deform.
CAUTION
• Check that the wiring is not broken off or disconnected.
• Check that the air filter is installed. (Some air-conditioners do not have air filters.)
• Check that the outdoor unit air outlet or inlet is not blocked.
• The air filter can prevent the dust or other particulate from going inside. In case of blockage of the
filter, the working efficiency of the air conditioner may greatly decrease. Therefore, the filter must be
cleaned once every two weeks during long time usage.
• If the air conditioner is positioned in a dusty place, the cleaning frequency of the air filter must be
increased. If the accumulated dust is too heavy to be cleaned, please replace the filter with a new one
(replaceable air filter is an optional fitting).
• The filter cleaning should be performed by a suitable service provider.
Cleaning the indoor unit and remote
Checks before operation
If you do not plan to use the unit for at least 1 month:
1. Operate the fan for about half a day to dry the inside of the unit.
2. Stop the air conditioner and disconnect power.
3. Remove the batteries from the remote controller.

Maintenance
Page 19 mrcool.com
Cassette Type
A B
1. Open the air-in grill. Push the grill switches towards the
middle simultaneously as indicated in Fig. 5.1A. Then pull
down the air-in grill.
1. Open the air-in grill. Push the grill switches towards the
middle simultaneously as indicated in Fig. 5.2. Then pull
down the air-in grill.
2. Take out the air-in grill.
3. Dismantle the air filter.
4. Clean the air filter (Vacuum cleaner or pure water may be
used to clean the air filter. If the dust accumulation is too
heavy, please use soft brush and mild detergent to clean it
and dry out in cool place) .
• The air-in side should face up when using vacuum
cleaner. (See Fig. 5.3)
• The air-in side should face down when using water.
(See Fig. 5.4)
5. Re-install the air filter.
6. Install and close the air-in grill in the reverse order of step
1 and 2 and connect the control box cables to the
corresponding terminators of the main body .
Note: High-Static Pressure Parvis Split Type has no air filter.
2. Take out the air-in grill (together with the air filter shown in Fig 5.1B). Pull the air-in grill down at 45° and lift it up
to take out the grill.
3. Dismantle the air filter.
4. Clean the air filter (Vacuum cleaner or pure water may be used to clean the air filter. If the dust accumulation is
too heavy, please use soft brush and mild detergent to clean it and dry out in cool place) .
Duct and Ceiling Type
Clip
Open<
CAUTION
The control box cables, which are originally
connected with the main body electrical
terminators, must be puled off before doing
as indicated.
CAUTION
The control box cables, which are originally
connected with the main body electrical
terminators, must be pulled off before doing
as indicated .
Fig. 5.1
Fig. 5.2
Fig. 5.3 Fig. 5.4