Trane LCD Control Series Quick start guide

ACYSTAT-IOM-EN
LCD Control Series
Touch Control Series
LCD Control Series
August 2010
Owner & Installation Manual
ACYSTAT110AA (Wired, Cooling only)
ACYSTAT120AA (Wireless, Cooling only)
ACYSTAT210AA (Wired, Cooling & Heating)
ACYSTAT220AA (Wireless, Cooling & Heating)
Touch Control Series
ACYSTAT160AA (Wired, Cooling only)
ACYSTAT170AA (Wireless, Cooling only)
ACYSTAT260AA (Wired, Cooling & Heating)
ACYSTAT270AA (Wireless, Cooling & Heating)
ACYSTAT410AA
LCD Chilled Water Control
ACYSTAT420AA
Touch Chilled Water Control
ACYSTAT460AA
ACYSTAT470AA

2ACYSTAT-IOM-EN
Gerneral System Appearance

ACYSTAT-IOM-EN 3
Contents
General System Appearance 2
General Information 4
Wireless Remote Control 6
Display Unit and Receiver Board
LCD Control series 7
Touch Wired Control 12
Handheld Remote Control 16
Installation 22
Remote Control Installation 24
Electrical Installation 25
Wiring Diagram 26
Outline Dimention 30

4ACYSTAT-IOM-EN
General Information
Congratulations on your selection of Trane Digital
Thermostat Control. These systems have been carefully
designed and manufactured under strict Trane Worldwide
Quality Standards. Each model of Digital Thermostat
includes all of those operating features most desired
by today's discriminating consumer and latest state-
of-the-art electronic technology in design and materials.
Installation procedures should be performed in the sequence
that they appear in this manual. Additionally, the services
be employed, through a maintenance contract with a
reputable service company.
Also, This manual is a user guide to operate and maintain
the digital thermostat.
Please read this manually carefully before installing and
using this thermostat.
About This Manual
Cautions appear at appropriate places in this instruction
manual. Your personal safety and the proper operation
of this machine require that you follow them carefully. The
Trane Company assumes no liability for inappropriate
use of the unit.
About The Unit
The Trane ACYSTAT is typically used with room air
conditioning systems using concealed type indoor units.
These series offer digital thermostat control with LCD
wireless remote or wired control. Provide convenient and
precise control of both Cooling only and Cooling/Heating
concealed type chilled water fan coil or direct expansion
air handling units.
The typical system wiring schematics are generic by
necessity and do not apply to all possible indoor unit
configurations and control requirements. If you have any
question relating to proper application or installation of
these thermostats, please contact your nearest Trane
Dealer.
Reception
On arrival, inspect the unit before signing the delivery
note. Specify any damage of the unit on the delivery
note, and send a registered awithin 72 hours of delivery.
Notify the dealer at the same time.
The unit should be totally inspected within 7 days of
delivery. If any concealed damage is discovered, send a
registered letter of protest to the carrier within 7 days of
delivery and notify the dealer.
Warning
Warnings are provided at appropriate places in this
manual to indicate to installers, operators and service
personnel of potentially hazardous situations which, if not
avoided, COULD result in death or serious injury.
Caution
Cautions are provided at appropriate places in this
manual to indicate to installers, operators, and service
personnel of potentially hazardous situations which, if
not avoided, MAY result in minor or moderate injury or
malfunction of the unit.
Your personal safety and the proper operation of this unit
require that you follow them carefully. The Trane Company
assumes no liability for installations or servicing performed
by unqualified personnel.

ACYSTAT-IOM-EN 5
General Information
Warranty
Warranty is based on the general terms and conditions
by country. The warranty is void if the equipment is modified
or repaired without the written approval of The Trane
Company, if the operating limits are exceeded or if the
control system or the electrical wiring is modified.
Damage due to misuse, lack of maintenance or failure
to comply with the manufacturer's instructions, is not
covered by the warranty obligation. If the user does not
follow the instructions in the Owner Manual, it may
entail cancellation of warranty and liabilities by The Trane
Company.
Important
These instructions do not cover all variatioans in systems,
nor do they provide for every possible contingency to
be met. Should further information be desired or should
particular problems arise which are not covered sufficiently
for the purchaser's purposes, the matter should be referred
to your authorized Trane dealer.

6ACYSTAT-IOM-EN
Wireless Remote Control
There are four major components of the Wireless Remote
Control system as follows:
(1) Control Box Assembly
(2) Display Unit and Receiver Board
(LCD or Touch wired control)
(3) Hand Held Remote Controller
(4) Cable (standard assembly length
4 meters)
Components (1) and (4), along with the system fan coil
or air handler are concealed in the building structure and
do not require access by the system operator. The visible
and accessible components are components (2) and (3)
as shown below.
Display Unit and Receiver Board
Figure 2 - LCD Wired Conrol
Handheld Remote Controller
Figure 4
Display Unit and Receiver Board
Figure 3 - Touch Wired Control

ACYSTAT-IOM-EN 7
Display Unit and Receiver Board
LCD Wired Control
LCD Wired Control
Name and function of buttons
1. Infrared Signal Receiver
Receives the signal from handheld remote control and
transmits the signal to indoor unit.
2. POWER Button
Press this button to start unit operation.
Press this button again to stop unit operation.
3. Temperature Setting Button
TEMP : Press this button to increase the set
temperature.
TEMP : Press this button to decrease the set
temperature.
4. MENU Button
Press this button to select modes or functions in the
menu.
5. MODE Button
Press this button to select system operation mode.
In cooling only system, a mode is selected in sequence
as FAN, COOL, DRY, and back to FAN. In cooling and
heating system, a mode is selected in sequence as
FAN, COOL, DRY, HEAT, AUTO, and back to FAN.
6. FAN SPEED Button
Press this button to select fan speed.
1. CLOCK
Displays present time.
2. ON TIMER
Displays ON TIMER when ON TIMER is set.
3. OFF TIMER
Displays OFF TIMER when OFF TIMER is set.
4. SLEEP Mode
Displays sleep symbol after activating SLEEP mode.
5. Room & Set Temperature
- Displays the room temperature. When FAN or TURBO
mode is selected, the room temperature will be
disappeared until FAN or TURBO mode is cancelled
or complete.
- Displays the set temperature (15OC to 30OC) when
either or button is pressed.
6. FAN Speed
Displays the selected fan speed level: auto, low,
medium, or high.
7. Operation Mode
Displays the current operation mode: FAN, COOL, or
DRY in cooling only system; FAN, COOL, DRY, HEAT,
or AUTO in cooling and heating systems.
8. ECONO Mode
Displays “ECONO” when ECONO mode is activated.
9. TURBO Mode
Displays “TURBO” when TURBO mode is activated.
10. Compressor/Valve Status Indicator
Displays compressor/valve status.
Indicators on LCD Wired Control

8ACYSTAT-IOM-EN
Operation Mode
FAN Mode
- Press MODE button to select the operation mode.
- will be shown on the display when FAN mode is
selected.
- Press FAN SPEED button to select the desired fan speed
level and the display will show Auto, Low, Medium, and
High respectively.
Note:
• In DRY mode, if the compressor/valve stops working, fan
motor and SWEEP function will be stopped; fan motor
and SWEEP function will operate when compressor/
valve operates.
• ECONO mode can not be activated during DRY mode
operation.
HEAT Mode
- Press MODE button to select the operation mode.
- will be shown on the display when HEAT mode is
selected.
-
Press either or button to set the desired temperature
between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan speed
level and the display will show Auto, Low, Medium, and
High respectively.
Display Unit and Receiver Board
LCD Wired Control
Note:
• In FAN mode, the LCD display will not show set
temperature and can not adjust set temperature,
SLEEP, ECONO, and TURBO mode.
COOL Mode
- Press MODE button to select the operation mode.
- will be shown on the display when COOL mode is
selected.
- Press either or button to set the desired temperature
between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan
speed level and the display will show Auto, Low,
Medium, and High respectively.
Auto --> Low --> Medium --> High
Auto --> Low --> Medium --> High
DRY Mode
- Press MODE button to select the operation mode.
- will be shown on the display when DRY mode is
selected.
-
Press either or button to set the desired temperature
between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan speed
level and the display will show Auto, Low, Medium, and
High respectively.
Auto --> Low --> Medium --> High
Auto --> Low --> Medium --> High
AUTO Mode
- Press MODE button to select the operation mode.
- will be shown on the display when AUTO mode is
selected.
- Press either or button to set the desired temperature
between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan speed
level and the display will show Auto, Low, Medium, and
High respectively.
Auto --> Low --> Medium --> High

ACYSTAT-IOM-EN 9
Note:
• In AUTO mode, the system will automatically switch
between COOL mode and HEAT mode to maintain
equally room temperature and set temperature.
CLOCK Setting
- Press MENU button and select CLOCK setting by
pressing either or .
- Press MENU button again to set clock and will be
shown on the display with blinking hour number.
- Press either or button to set the clock to the
present hour.
- Press MENU button again to confirm hour setting and
minute number will be blinking.
- Press either or button to set the clock to the
present minute.
- Press MENU button again to confirm minute setting;
hour and minute number will stop blinking and the set
time will be shown on the display.
Note:
• If there are no other buttons pressed within 15 second,
clock setting will be cancelled.
Timer Operation
Once you select the timer operation, the settings are saved
in the control. Thereafter, the air conditioner will start oper-
ating under the same conditions when you simply push the
POWER button on the control.
ON TIMER Setting
You can set ON TIMER to start the unit automatically at
any desired time up to 24 hours as real time.
- Press MENU button and select ON TIMER setting by
pressing either
or .
- Press MENU button again to set ON TIMER and ON
symbol will be shown on the display with blinking
hour number.
- Press either or button to set the desired hour.
- Press MENU button again to confirm hour setting and
minute number will be blinking.
- Press either or button to set the desired minute.
- Press MENU button again to confirm minute setting.
Hour and minute number will stop blinking. The unit
is now standby for starting air-conditioner automatically
at the set time.
- To cancel ON TIMER, select ON TIMER setting and
press MENU button again.
Note:
• If there are no other buttons pressed within 15 seconds,
ON TIMER will be cancelled, and the LCD display will
return to show clock.
• After selecting ON TIMER setting, the LCD display
will show the last on timer set by user with blinking
hour number.
• When ON/OFF TIMER is set, the present time is not
displayed.
• In case of power failure, ON TIMER will be automatically
cancelled as there is no electricity in the air-conditioner.
OFF TIMER Setting
You can set OFF TIMER to stop the unit automatically
at any desired time up to 24 hours as real time.
- Press MENU button and select OFF TIMER setting by
pressing either or .
- Press MENU button again to set OFF TIMER and OFF
symbol will be shown on the display with blinking hour
number.
- Press either or button to set the desired hour.
- Press MENU button again to confirm hour setting and
minute number will be blinking.
- Press either or button to set the desired minute.
- Press MENU button again to confirm minute setting.
Hour and minute number will stop blinking. The unit is
now standby for starting air-conditioner automatically
at the set time.
- To cancel OFF TIMER, select OFF TIMER setting and
press MENU button again.
Note:
• If there are no other buttons pressed within 15 seconds,
OFF TIMER will be cancelled, and the LCD display will
return to show clock.
• After selecting OFF TIMER setting, the LCD display
will show the last off timer set by user with blinking
hour number.
• When ON/OFF TIMER is set, the present time is not
displayed.
•
In case of power failure, OFF TIMER will be automatically
cancelled as there is no electricity in the air-conditioner.
Display Unit and Receiver Board
LCD Wired Control

10 ACYSTAT-IOM-EN
TURBO Mode
TURBO mode rapidly maximizes the cooling capacity in
COOL or DRY mode. With this simply mode, the user can
easily get the maximum cooling capacity and comfort.
- Press MENU button and select TURBO mode setting
by pressing either or .
- The air-conditioner will accelerate capacity up totally
20 minutes or until room temperature is lower than 18OC.
- When TURBO mode completely operates or is cancelled,
“TURBO” will be disappeared from the display and
return to the former settings before TURBO mode.
- To cancel TURBO mode, either press MODE button
or select TURBO mode and press MENU button again.
Note:
• The LCD display will not show fan speed and set
temperature.
• Fan speed and set temperature can not be changed while
TURBO mode is selected.
• In case of power failure, TURBO mode will be
automatically cancelled.
SLEEP Mode
SLEEP mode automatically and gradually adjusts room
temperature to provide great comfort during your rest.
Cooling
- Press MENU button and select SLEEP mode by
pressing either or .
- Press MENU button again to confirm SLEEP mode.
will be shown on the display.
- After one hour operation of SLEEP mode, the unit will
automatically raise set temperature by 0.5OC.
- After one and half hour operation of SLEEP mode, the
unit will automatically raise set temperature by 0.5OC
again and on the display will disappear.
- To cancel SLEEP mode, either press MODE button
or select SLEEP mode and press MENU button again.
Heating
- Press MENU button and select SLEEP mode by
pressing either or .
- Press MENU button again to confirm SLEEP mode.
will be shown on the display.
- After one hour operation of SLEEP mode, the unit will
automatically reduce set temperature by 0.5OC.
- After one and half hour operation of SLEEP mode,
the unit will automatically reduce set temperature by
0.5OC again and on the display will disappear.
- To cancel SLEEP mode, either press MODE button
or select SLEEP mode and press MENU button again.
Display Unit and Receiver Board
LCD Wired Control
Note:
• Set temperature shown on the display still show the
setting without 1OC added/reduced but it will plus/minus
1OC in the memory.
• will disappear from the LCD display when SLEEP mode
completely operates, after one and half hours, or is
cancelled.
•
In case of power failure, SLEEP mode will be automatically
cancelled.

ACYSTAT-IOM-EN 11
Note:
• ECONO mode operates only in COOL mode and
automatically operates when air-conditioner is closed
without exiting or canceling ECONO mode.
• Fan speed can not be changed while ECONO mode is
selected.
OC/ OF Toggle
The optional feature offers you to change the temperature
display from OC to OF or from OF to OC.
- Press and hold both and button for 5 seconds to
change temperature display.
Display Unit and Receiver Board
LCD Wired Control
ECONO Mode
ECONO mode drastically saves energy with high
efficient cooling capacity in COOL mode by reducing power
consumption. With this simply mode, the user can easily
get energy saving and comfort.
- Press MENU button and select ECONO mode by
pressing either or .
- Press MENU button again to confirm ECONO mode.
“ECONO” will be shown on the display.
- The air-conditioner will operates at low fan speed and
raise temperature by 1OC from set temperature.
- To cancel ECONO mode, either press MODE button or
select ECONO mode and press MENU button again.
System Features
1. Watchdog
There is a circuit in the system to watch the operation of
the microprocessor.
2. Compressor Delay Protection*
There is a time delay for restarting the compressor.
3. Compressor Minimum on Time*
Once the compressor starts, it will operate at least
24 seconds.
4. Non-Volatile Memory (Auto Restart)
If there is a power interruption or failure and back to
normal, the control will automatically resume its
operation with the same setting parameters except
those related to time.
5. Pre-heat/Post-heat (Heat Mode)
This feature prevents the fan coil blowing cold draught
when the indoor coil temperature is low.
6. Freeze Function
To prevent the indoor coil freezing, this feature will
stop compressor when the indoor coil temperature is
below 0OC.
7. Defrost Function
This feature will protect the system operating in heat
mode under very low ambient temperature.
8. Compressor/Valve Status Indicator
This feature is the basic detection of compressor/valve status
by showing on the display while compressor/valve is
operating.
Error Code & Display
C
Note: *These features are not available for chilled water control.

12 ACYSTAT-IOM-EN
Display Unit and Receiver Board
Touch Wired Control
Touch Wired Control
Name and function of buttons
1. Infrared Signal Receiver
Receives the signal from handheld remote control and
transmits the signal to indoor unit.
2. POWER button
Touch this button to start unit operation.
Touch this button again to stop unit operation.
3. Temperature Setting Button
TEMP : Touch this button to increase the set
temperature.
TEMP : Touch this button to decrease the set
temperature.
4. FAN SPEED Button
Touch this button to select fan speed.
5. MODE Button
Touch this button to select system operation mode.
In cooling only system, a mode is selected in sequence
as FAN, COOL, DRY, and back to FAN. In cooling and
heating system, a mode is selected in sequence as
FAN, COOL, DRY, HEAT, AUTO, and back to FAN.
6.2 Operation Mode
- Displays the current operation mode: FAN, COOL,
or DRY in cooling only system; FAN, COOL, DRY,
HEAT, or AUTO in cooling and heating systems
for 5 seconds when MODE button is pressed.
6.3 ECONO Mode
- Displays “ ” when ECONO mode is activated.
6.4 POWERCOOL Mode
-
Displays “ ” when POWERCOOL mode is
activated.
6.5 SLEEP Mode
- Displays “ ” when SLEEP mode is activated.
6.6 Error Code
- Displays error code when an error occurs.
7. FAN Speed
- Displays the selected fan speed level: Auto, Low,
Medium, or High.
8. Standby Status
- When lit, the dot LED after the first digit of the 7
segment display indicates the standby status.
9. Compressor/Valve Status
- When lit, the dot LED after the second digit of the 7
segment display indicates the compressor/valve is on.
Operation Mode
FAN Mode
- Touch MODE button to select the operation mode.
- will be shown on the status display when FAN
mode is selected.
- Touch FAN SPEED button to select the desired fan
speed level and the display will show Low (L), Medium
(M), High (H), and Auto ( ) respectively.
Note:
• In FAN mode, the status display will show room
temperature but can not adjust set temperature,
POWERCOOL, SLEEP, and ECONO mode.
COOL Modes
- Touch MODE button to select the operation mode.
- will be shown on the status display when COOL
mode is selected.
- Touch either or button to set the desired
temperature between 15OC to 30OC.
6. Status Display
6.1 Room & Set Temperature
- Displays the room temperature. When FAN or
POWERCOOL mode is selected, the room
temperature will be disappeared until FAN or
POWERCOOL mode is cancelled or complete.
- Displays the set temperature (15OC to 30OC)
when either or button is pressed.
Indicators on Touch Wired Control

ACYSTAT-IOM-EN 13
Display Unit and Receiver Board
Touch Wired Control
- Touch FAN SPEED button to select the desired fan
speed level and the display will show Low (L), Medium
(M), High (H), and Auto ( ) respectively.
DRY Mode (Available when using with remote control)
- Press MODE button in remote control to select the
operation mode.
- will be shown on the status display when DRY
mode is selected.
- Touch either or button to set the desired
temperature between 15OC to 30OC.
- Touch FAN SPEED button to select the desired fan
speed level and the display will show Low (L),
Medium (M), High (H), and Auto ( ) respectively.
Note:
• In DRY mode, if the compressor/valve stops working, fan
motor will be stopped; fan motor will operate when
compressor/valve operates.
• ECONO mode can not be activated during DRY mode
operation.
HEAT Mode
- Touch MODE button to select the operation mode.
- will be shown on the status display when HEAT
mode is selected.
- Touch either or buttonutton to set the desired
temperature between 15OC to 30OC.
- Touch FAN SPEED button to select the desired
fan speed level and the display will show Low (L),
Medium (M), High (H), and Auto ( ) respectively.
AUTO Mode
- Touch MODE button to select the operation mode.
- will be shown on the display when AUTO mode is
selected.
- Touch either or buttonutton to set the desired
temperature between 15OC to 30OC.
- Touch FAN SPEED button to select the desired
fan speed level and the display will show Low (L),
Medium (M), High (H), and Auto ( ) respectively.
Note:
• In AUTO mode, the system will automatically switch
between COOL mode and HEAT mode to maintain
equally room temperature and set temperature.
Timer Operation (Available when using with remote
control)
Once you select the timer operation, the settings are
saved in the control. Thereafter, the air conditioner will
start operating under the same conditions when you simply
push the POWER button on the control.
ON TIMER Setting
You can set ON TIMER to start the unit operation
automatically at any desired time up to 24 hours as
real time.
Note:
• This function is available when using with remote
control only.
• No symbol shows on the status display.
OFF TIMER Setting
You can set OFF TIMER to stop the unit operation
automatically at any desired time up to 24 hours as
real time.
Note:
• This function is available when using with remote
control only.
• No symbol shows on the status display.
POWERCOOL Mode (Available when using with
remote control)
POWERCOOL mode rapidly maximizes the cooling
capacity in COOL or DRY mode. With this simply mode,
the user can easily get the maximum cooling capacity
and comfort.
- Press POWERCOOL button in remote control to select
POWERCOOL mode.
- will be shown on the status dissplay when
POWERCOOL mode is selected.
- The air-conditioner will accelerate capacity up totally
20 minutes or until room temperature is lower than 18OC.
- When POWERCOOL mode completely operates or is
cancelled, will disappear from the display and
return to the former settings before POWERCOOL mode.
- To cancel POWERCOOL mode, press POWERCOOL
button in remote control again.

14 ACYSTAT-IOM-EN
Note:
• The status display will not show fan speed and set
temperature.
• Fan speed and set temperature can not be changed
while POWERCOOL mode is selected.
• In case of power failure or changing operation mode,
POWERCOOL mode will be automatically cancelled.
SLEEP Mode (Available when using with remote
control)
SLEEP mode automatically and gradually adjusts room
temperature to provide great comfort during your rest.
Cooling
- Press SLEEP button in remote control to select
SLEEP mode.
- will be shown on the status display when SLEED
mode is selected
- After one hour operation of SLEEP mode, the unit will
automatically raise set temperature by 0.5OC.
- After one and half hour operation of SLEEP mode, the
unit will automatically raise set temperature by 0.5OC
again.
- After one and half hour operation of SLEEP mode,
the unit will automatically reduce set temperature
by 0.5OC again.
- To cancel SLEEP mode, press SLEEP button in remote
control again.
Note:
• Set temperature shown on the display still show the
setting without 1OC added/reduced but it will plus/
minus 1OC in the memory.
• In case of power failure or changing operation mode,
SLEEP mode will be automatically cancelled.
ECONO Mode (Available when using with
remote control)
ECONO mode drastically saves energy with high efficient
cooling capacity in COOL mode by reducing power
consumption. With this simply mode, the user can easily
get energy saving and comfort.
- Press ECONO button in remote control to select
ECONO mode.
- will be shown on the status display when ECONO
mode is selected.
- The air-conditioner will operates at low fan speed
and raise temperature by 1OC from set temperature.
- To cancel ECONO mode, press ECONO button in
remote control again.
Display Unit and Receiver Board
Touch Wired Control
- To cancel SLEEP mode, press SLEEP button in remote
control again.
Heating
- Press SLEEP button in remote control to select
SLEEP mode.
- will be shown on the status display when SLEEP
mode is selected.
- After one hour operation of SLEEP mode, the unit
will automatically reduce set temperature by 0.5OC.

ACYSTAT-IOM-EN 15
Display Unit and Receiver Board
Touch Wired Control
Note:
• ECONO mode operates only in COOL mode and
automatically operates when air-conditioner is closed
without exiting or canceling ECONO mode.
• Fan speed can not be changed while ECONO mode
is selected.
• In case of changing operation mode, ECONO mode
will be automatically cancelled.
DIM Function
DIM function offers you to dim or restore the brightness of
the display panel.
- Touch and hold both and button for 2-3 seconds
to dim the brightness of the display panel.
- Touch and hold both and button or 2-3 seconds
again to restore the brightness of the display panel
to default setting.
Note:
• Whenever adjusting any parameter, after activating
DIM function, the brightness of the display panel will
be restored to default setting for 5 seconds and
returned to dim setting.
• In case of power failure or switching off breaker, DIM
function will be automatically restored to default setting
for 15 seconds and returned to DIM setting.
• Whenever error code displays, DIM function will be
automatically restored to default setting.
• If there is no any button pressed for 3 minutes, the
display panel will be standby.
• During standby, press any button to activate the
display panel.
OC/OF Toggle
The optional feature offers you to change the temperature
display from OC to OF or from OF to OC.
- Press and hold button for 8 seconds to change
temperature display.
System Features
1. Watchdog
There is a circuit in the system to watch the operation
of the microprocessor.
2. Compressor Delay Protection*
There is a time delay for restarting the compressor.
3. Compressor Minimum on Time*
Once the compressor starts, it will operate at least
24 seconds.
4. Non-Volatile Memory (Auto Restart)
If there is a power interruption or failure and back
to normal, the control will automatically resume its
operation with the same setting parameters except
those related to time.
5. Pre-heat/Post-heat (Heat Mode)
This feature prevents the fan coil blowing cold draught
when the indoor coil temperature is low.
6. Freeze Function
To prevent the indoor coil freezing, this feature will
stop compressor when the indoor coil temperature is
below 0OC.
7. Defrost Function
This feature will protect the system operating in heat
mode under very low ambient temperature.
Error Code & Display
Note: *These features are not available for chilled water control.

16 ACYSTAT-IOM-EN
Handheld Remote Control
Infrared Remote Control
Name and function of buttons
1. Infrared Signal Transmitter
Transmits the signal to indoor unit.
2. POWER Button
Press this button to start unit operation.
Press this button again to stop unit operation.
3. Temperature Setting Button
TEMP : Press this button to increase the set
temperature.
TEMP : Press this button to decrease the set
temperature.
4. FAN SPEED Button
Press this button to select fan speed.
5. MODE Button
Press this button to select system operation mode.
In cooling only system, a mode is selected in sequence
as FAN, COOL, DRY, and back to FAN. In cooling and
heating system, a mode is selected in sequence as
FAN, COOL, DRY, HEAT, AUTO, and back to FAN.
6. LOUVER Button
This button has no function.
7. SWEEP Button
This button has no function.
8. DIM Button
Press this button to dim or restore the brightness of
the display.
9. ON TIMER Button
Press this button to set the on timer of the unit
operation.
10. OFF TIMER Button
Press this button to set the off timer of the unit
operation.
11. CLOCK Button
Press this button to set the clock to the present time
or see the present time after ON or OFF TIMER was set.
12. LIGHT Button
Press this button to turn on the LCD light.
13. POWERCOOL Button
Press this button to accelerate capacity up.
14. ECONO Button
Press this button to save energy.
15. SLEEP Button
Press this button to control temperature while sleeping
and press this button again to cancel.
16. SEND Button
Press this button to confirm the operation of the unit
according to the LCD display or press and hold for
5 seconds to toggle temperature unit between Celsius
and Fahrenheit.

ACYSTAT-IOM-EN 17
Indicators on Infrared Remote Control
Handheld Remote Control
Installation of Batteries
1. Slide the back cover of the remote control down to
take it off.
2. Insert two dry batteries into the slot. Be sure that the
+ and - directions are correct.
3. Fix the back cover to the remote control as before.
Attentions
• Batteries can be used approximately for one year
under normal conditions.
• Always replace an identical type of two batteries at
the same time.
• Do not use manganese dry batteries since they may
cause a malfunction.
• Do not use rechargeable (Ni-Cd) batteries, because
such batteries may differ from standard dry cell
batteries in shapes, dimensions, or performance.
• Take out all batteries if you are not going to use the
air-conditioner for a long period of time. 1. CLOCK
Displays present time.
2. ON TIMER
Displays ON TIMER when ON TIMER is set.
3. OFF TIMER
Displays OFF TIMER when OFF TIMER is set.
4. Transmission Indicator
The transmission indicator lights when remote control
transmits signal to the indoor unit.
5. SLEEP Mode
Displays sleep symbol after activating SLEEP mode.
6. Set Temperature
Displays the set temperature (15OC to 30OC)
When FAN or POWERCOOL mode is selected, the
set temperature will be disappeared until FAN or
POWERCOOL mode is cancelled or complete.
7. FAN Speed
Displays the selected fan speed level: Auto, Low,
Medium, or High.
8. Operation Mode
Displays the current operation mode: FAN, COOL,
or DRY.
9. ECONO Mode
Displays “ECONO” when ECONO mode is activated.
10. POWERCOOL Mode
Displays “POWERCOOL” when POWERCOOL mode is
activated.
A

18 ACYSTAT-IOM-EN
Handheld Remote Control
Operation Mode
FAN Mode
- Press Mode button to select the operation mode.
- “FAN” will be shown on the display when FAN mode
is selected.
- Press FAN SPEED button to select the desired fan
speed level and the display will show Auto, Low,
Medium, and High respectively.
Note:
• In DRY mode, if the compressor/valve stops working, fan
motor will be stopped; fan motor will operate when
compressor/valve operates.
• ECONO mode cannot be activated during DRY mode
operation.
HEAT Mode
- Press Mode button to select the operation mode.
- “HEAT” will be shown on the display when HEAT
mode is selected.
- Press either or button to set the desired
temperature between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan
speed level and the display will show Auto, Low,
Medium, and High respectively.
Auto --> Low --> Medium --> High
Auto --> Low --> Medium --> High
Auto --> Low --> Medium --> High
Auto --> Low --> Medium --> High
Note:
• In FAN mode, the LCD display will not show set
temperature and cannot adjust set temperature, SLEEP,
ECONO, and POWERCOOL mode.
COOL Mode
- Press Mode button to select the operation mode.
- “COOL” will be shown on the display when COOL
mode is selected.
- Press either or button to set the desired
temperature between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan
speed level and the display will show Auto, Low,
Medium, and High respectively.
DRY Mode
- Press Mode button to select the operation mode.
- “DRY” will be shown on the display when DRY mode
is selected.
- Press either or button to set the desired
temperature between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan
speed level and the display will show Auto, Low,
Medium, and High respectively.
AUTO Mode
- Press Mode button to select the operation mode.
- “AUTO” will be shown on the display when AUTO
mode is selected.
- Press either or button to set the desired
temperature between 15OC to 30OC.
- Press FAN SPEED button to select the desired fan
speed level and the display will show Auto, Low,
Medium, and High respectively.
Auto --> Low --> Medium --> High

ACYSTAT-IOM-EN 19
Handheld Remote Control
Note:
• In AUTO mode, the system will automatically switch
between COOL mode and HEAT mode to maintain
equally room temperature and set temperature.
CLOCK Setting
- Press CLOCK button to set clock and will be
shown on the display with blinking hour number.
- Press either or button to set the clock to the
present hour.
- Press CLOCK button again to confirm hour setting
and minute number will be blinking.
- Press either or button to set the clock to the
present minute.
- Press CLOCK button again to confirm minute setting;
hour and minute number will stop blinking and the
set time will be shown on the display.
Note:
• If there are no other buttons pressed within 15 seconds,
clock setting will be cancelled.
• The user can confirm CLOCK setting during CLOCK
setting process by pressing SEND button.
Timer Operation
Once you select the timer operation, the settings are
saved in the remote control. Thereafter, the air conditioner
will start operating under the same conditions when you
simply push the POWER button on the remote control.
ON TIMER Setting
You can set ON TIMER to start the unit automatically at
any desired time up to 24 hours as real time.
- Press ON TIMER button. ON symbol will be shown
on the display with blinking hour number.
- Press either or button to set the clock to the
present hour.
- Press ON TIMER button again to confirm hour setting
and minute number will be blinking.
- Press either or button to set the desired minute.
- Press ON TIMER button again to confirm minute
setting. Hour and minute number will stop blinking.
The unit is now standby for starting air-conditioner
automatically at the set time.
- To cancel ON TIMER, press ON TIMER button again.
Note:
• The user can confirm ON TIMER during ON TIMER
setting process by pressing SEND button.
• If there are no other buttons pressed within 15 seconds,
ON TIMER will be cancelled, and the LCD display
will return to show clock.
• After Pressing ON TIMER button, the LCD display
will show the last on timer set by user with blinking
hour number.
• When ON/OFF TIMER is set, the present time is not
displayed.
• Press CLOCK button to see present time after ON/OFF
TIMER was set. The LCD display will show present
time about 15 seconds and return to show ON/OFF
TIMER. If user press CLOCK button during the 15
seconds display of present time, the operation will be
CLOCK setting and return to ON/OFF TIMER.
• In case of power failure, ON TIMER will be automatically
cancelled as there is no electricity in the air-conditioner;
however, the set time on the remote control is still
displayed due to batteries. The user has to cancel
and set ON TIMER again or press SEND button to
reactivate ON TIMER when the electricity is back to
normal conditions.
OFF TIMER Setting
You can set OFF TIMER to stop the unit automatically
at any desired time up to 24 hours as real time.
- Press OFF TIMER button. OFF symbol will be shown
on the display with blinking hour number.
- Press either or button to set the desired hour.
- Press OFF TIMER button again to confirm hour setting
and minute number will be blinking.
- Press either or button to set the desired minute.
- Press OFF TIMER button again to confirm minute
setting. Hour and minute number will stop blinking.
The unit is now standby for stopping air-conditioner
automatically at the set time.
- To cancel OFF TIMER, press OFF TIMER button again.

20 ACYSTAT-IOM-EN
Note:
• The user can confirm OFF TIMER during OFF TIMER
setting process by pressing SEND button.
• If there are no other buttons pressed within 15 seconds,
OFF TIMER will be cancelled, and the LCD display will
return to show clock.
• After Pressing OFF TIMER button, the LCD display
will show the last off timer set by user with blinking
hour number.
• When ON/OFF TIMER is set, the present time is not
displayed.
• Press CLOCK button to see present time after ON/OFF
TIMER was set. The LCD display will show present
time about 15 seconds and return to show ON/OFF
TIMER. If user press CLOCK button during the 15
seconds display of present time, the operation will be
CLOCK setting and return to ON/OFF TIMER.
• In case of power failure, OFF TIMER will be automatically
cancelled as there is no electricity in the air-conditioner;
however, the set time on the remote control is still
displayed due to batteries. The user has to cancel
and set OFF TIMER again or press SEND button to
reactivate OFF TIMER when the electricity is back to
normal conditions.
POWERCOOL Mode
POWERCOOL mode rapidly maximizes the cooling
capacity in COOL or DRY mode. With this simply mode, the
user can easily get the maximum cooling capacity
and comfort.
- Press POWERCOOL button. “POWERCOOL” will
be shown on the display.
- The air-conditioner will accelerate capacity up totally
20 minutes or until room temperature is lower than 18OC.
- When POWERCOOL mode completely operates or
is cancelled, “POWERCOOL” will disappear from
the display and return to the former settings before
POWERCOOL mode.
- To cancel POWERCOOL mode, press POWERCOOL
button again.
Note:
• The LCD display will not show fan speed and set
temperature.
• Fan speed and set temperature cannot be changed
while POWERCOOL mode is selected.
• In case of power failure or changing operation mode,
POWERCOOL mode will be automatically cancelled.
SLEEP Mode
SLEEP mode automatically and gradually adjusts room
temperature to provide great comfort during your rest.
Cooling
- Press SLEEP button. will be shown on the display.
- After one hour operation of SLEEP mode, the unit
will automatically raise set temperature by 0.5OC.
- After one and half hour operation of SLEEP mode,
the unit will automatically raise set temperature by
0.5OC again and on the display will disappear.
- To cancel SLEEP mode, press SLEEP button again.
Heating
- Press SLEEP button. will be shown on the display.
- After one hour operation of SLEEP mode, the unit
will automatically reduce set temperature by 0.5OC.
- After one and half hour operation of SLEEP mode,
the unit will automatically reduce set temperature
by 0.5OC again and on the display will disappear.
- To cancel SLEEP mode, press SLEEP button again.
Handheld Remote Control