Mitsubishi Electric PAC-ZC40L User manual

Zone Remote Controller
PAC-ZC40L/40H/80L/80H-E
Instruction Book
Prior to use, thoroughly read the instructions in this manual to use the product correctly.
Retain this manual for future reference.
Make sure that the Installation Manual, and Instruction Manual are passed on to any future users.
To ensure safety and proper operation of the remote controller, the remote controller should only be
installed by qualified personnel.

2
Product features
Zone Remote Controller is a remote controller designed to control Mitsubishi Electric’s air
conditioning units and zone controller.
Zone Remote Controller features such basic functions as operations and monitoring of air
conditioning units, zones, schedule-control functions and is equipped with three built-in sensors
(temperature, occupancy, brightness).
When the built-in occupancy sensor detects vacancy in a specific zone, the controller uses its
internal function to reduce energy-consumption.
Controller interface
▌
1Occupancy Sensor
The occupancy sensor detects vacancy for energy-save
control.
▌
2Brightness Sensor
The brightness sensor detects the brightness of the room
for energy-save control.
▌
3Temperature Sensor
The sensor detects the room temperature.
▌
4LED Indicator
The LED indicator indicates the operation status in different
colors.
The LED indicator lights up during normal operation, lights
off when units are stopped, and blinks when an error
occurs.
▌
5Touch panel & Backlit LCD
The touch panel shows the operation settings screen.
When the backlight is off, touching the panel turns the
backlight on, and it will stay lit for a predetermined period
of time.
1
2
5
3
4

3
▌
Energy-save control with the use of the built-in occupancy sensor
Occupancy sensor
Brightness sensor
• Energy-save control will be performed when the occupancy sensor detects vacancy.
• When the occupancy sensor detects no human movement for a certain period of time, this will be
regarded as the vacancy.
• Only one of the following energy-save controls can be used at a time.
Energy-save control mode Control when vacancy is detected
Non-use –
ON/OFF The unit will be turned off.
Set temperature offset The set temperature will be offset.
Fan speed down The fan speed will be set to “Low.”
Zones-off The zones will be off.
• Energy-save control can be stopped according to the brightness level detected by the brightness
sensor. (Example: While the occupants are sleeping at night)

4
▌
LED Indicator
LED Indicator
• The LED indicator indicates the operation status by lighting and blinking with different colors and
brightness (High/Low), or by turning off.
• Indicator colors: Blue, Light blue, Purple, Red, Pink, Orange, Yellow, Green, Lime, and White
Operation status LED indicator
The unit is in operation. Lights up in different colors according to the operation mode or the room
temperature (three different levels). *1
The unit is stopped. Turns off.
An error is occurring. Blinks in the color it is illuminated in at the time.
Energy-save control is being
performed. Lights up in the predetermined color. *1
The occupancy sensor has
sensed an occupant. Inverts the brightness (High/Low) twice. *1
A button is touched on the
Home screen. Inverts the brightness (High/Low). *1
*1 The settings can be made on the LED Indicator setting screen.
Default color setting
Color Operation mode setting (default) Room temperature
Blue Cool (Auto_Cool) 0ºC–21ºC (32ºF–69ºF)
Light blue Dry Not used
Yellow Fan 21.5ºC–26ºC (70ºF–79ºF)
White Auto Not used
Red Heat (Auto_Heat) 26.5ºC–40ºC (80ºF–104ºF)
Green Night setback Not used
Lime Energy-save control is in effect that has been performed when the occupancy
sensor detected vacancy.
* Purple, pink, and orange are not used by default.

5
Contents
Product features··························································· 2
Controller interface ············································································ 2
Safety precautions ························································ 6
Screen display ····························································· 8
Screen configuration·········································································· 8
Display···························································································· 9
Menu structure ················································································12
Icon explanations ·············································································14
Basic operations························································· 15
Power ON/OFF ···············································································15
Operation mode, Set temperature and Fan speed settings·······················16
Zone ON/OFF ·················································································20
Navigating through the Menu ········································ 21
Menu list ························································································21
About passwords ·············································································22
Navigating through the Menu······························································23
Function settings ························································ 27
Date and time··················································································27
Schedule ························································································30
Timer·····························································································33
Night setback ··················································································38
Display format ·················································································40
Sound and contrast ··········································································41
Energy saving (Assist function) ···························································42
LED Indicator ··················································································48
Touch panel calibration······································································51
Lock operations ···············································································52
Sensor threshold setting ····································································54
Set temperature range limit ································································59
Auto return······················································································62
Maintenance······························································ 65
Screen cleaning···············································································65
Filter information ··············································································66
Troubleshooting ························································· 68
Error information ··············································································68
Specifications ···························································· 69
Controller specifications·····································································69
List of functions that can/cannot be used in combination ··························70

6
Safety precautions
• Thoroughly read the following safety precautions before using the unit.
• Observe these precautions carefully to ensure safety.
WARNING Indicates a risk of death or serious injury.
CAUTION Indicates a risk of serious injury or structural damage.
• After reading this manual, pass it on to the end user to retain for future reference.
• Keep this manual for future reference and refer to it as necessary. This manual should be made available
to those who repair or relocate the controller. Make sure that the manual is passed on to any future users.
General precautions
WARNING
Do not install the unit in a place where large
amounts of oil, steam, organic solvents, or
corrosive gases, such as sulfuric gas, are present
or where acidic/alkaline solutions or sprays
are used frequently. These substances can
compromise the performance of the unit or cause
certain components of the unit to corrode, which
can result in electric shock, malfunctions, smoke,
or fire.
To reduce the risk of shorting, current leakage,
electric shock, malfunctions, smoke, or fire, do
not wash the controller with water or any other
liquid.
To reduce the risk of electric shock, malfunctions,
smoke or fire, do not operate the touch panel or
touch other electrical parts with wet hands.
When disinfecting the unit using alcohol, ventilate
the room adequately. The fumes of the alcohol
around the unit may cause a fire or explosion
when the unit is turned on.
To reduce the risk of injury or electric shock,
before spraying a chemical around the controller,
stop the operation and cover the controller.
To reduce the risk of injury or electric shock, stop
the operation and switch off the power supply
before cleaning, maintaining, or inspecting the
controller.
If any abnormality (e.g., burning smell) is noticed,
stop the operation, turn off the power switch, and
consult your dealer. Continued use of the product
may result in electric shock, malfunctions, or fire.
Properly install all required covers to keep
moisture and dust out of the controller. Dust
accumulation and water can cause electric shock,
smoke, or fire.

7
Safety precautions
CAUTION
To reduce the risk of fire or explosion, do not
place flammable materials or use flammable
sprays around the controller.
To reduce the risk of damage to the controller, do
not directly spray insecticide or other flammable
sprays on the controller.
To reduce the risk of environmental pollution,
consult an authorized agency for proper disposal
of remote controller.
To reduce the risk of electric shock or
malfunctions, do not touch the touch panel with a
pointy or sharp object.
To reduce the risk of injury and electric shock,
avoid contact with sharp edges of certain parts.
To avoid injury from broken glass, do not apply
excessive force on the glass parts.
To reduce the risk of injury, wear protective gear
when working on the controller.
Relocation and repairs
WARNING CAUTION
The controller should be repaired or moved only
by qualified personnel. Do not disassemble or
modify the controller.
Improper installation or repair may cause injury,
electric shock, or fire.
To reduce the risk of shorting, electric shock, fire,
or malfunction, do not touch the circuit board with
tools or with your hands, and do not allow dust to
accumulate on the circuit board.
Additional precautions
To avoid damage to the controller, use
appropriate tools to install, inspect, or repair the
controller.
This controller is designed for exclusive use with
the Zone controller by Mitsubishi Electric. The
use of this controller for with other systems or for
other purposes may cause malfunctions.
To avoid discoloration, do not use benzene,
thinner, or chemical rag to clean the controller.
To clean the controller, wipe with a soft cloth
soaked in water with mild detergent, wipe off the
detergent with a wet cloth, and wipe off water with
a dry cloth.
To avoid damage to the controller, provide
protection against static electricity.
Properly dispose of the packing materials. Plastic
bags pose suffocation hazard to children.
To avoid damage to the controller, do not
overtighten the screws.

8
Screen display
Screen configuration
Home screen Zone operation screen
Menu (User) screen Menu (Service) screen
A password is required to access the
Menu (Service) screen.
Zones will appear that are setting in
the zone setting screen.

9
Screen display
Display
▌
Home screen
* All icons are displayed for explanation.
1 2 3 4
55 66
93 4 7
8
)
0
2
7
8
1
!
9

10
Screen display
▌
1 [ON/OFF] button
Touch to turn ON/OFF the indoor unit.
▌
2 [Operation mode] button
Touch to change the operation mode.
▌
3 [Fan] button
Touch to change the fan speed.
▌
4 [Menu] button
Touch to bring up the Menu screen.
▌
5 LED Indicator ON/OFF button
Touch to turn ON/OFF the LED indicator.
▌
6
Touch to decrease the set temperature.
▌
7
Touch to increase the set temperature.
▌
8
Touch to go to the zone operation screen.
▌
9 Remote controller name
Remote controller name appears here.
▌
0 Room temperature for control
Current room temperature for control appears here.
▌
1 Set temperature
The set temperature appears here.
The display varies with the selected operation mode.
▌
2 Day and time
Current day and time appear here.
▌
3
Appears when the scheduled operation is being performed.
The icon appears when the timer operation is prohibited.
▌
4
Appears when the ON/OFF timer is activated or when the
Zone ON/OFF timer is activated or when the Night setback
function is enabled.
▌
5
Appears when the brightness sensor detects light brighter
than a predetermined level.
▌
6
Appears when the occupancy sensor senses an occupant.
▌
7
Appears when the filter needs maintenance.
▌
8 Sensor name for control
Current sensor name for control appears heare.
▌
9
Appears when the operation is locked.
▌
) Auto-OFF display
Appears when the Auto-OFF timer is activated.
▌
!
Appears when the set temperature range is restricted.

11
Screen display
▌
Zone operation screen
#
@
▌
@[Zones ON/OFF] button
Touch to turn ON/OFF the zones.
▌
#
Touch to return to the Home screen.

12
Screen display
Menu structure
Menu (User)
Date and time ··· Page 27
Enter date and time ··· Page 27
Date and time format ··· Page 28
Daylight saving time ··· Page 29
Schedule ··· Page 30
Timer ··· Page 33
Unit ON/OFF timer ··· Page 33
Unit Auto-OFF timer ··· Page 35
Zone ON/OFF timer ··· Page 36
Night setback ··· Page 38
Settings
Display format ··· Page 40
— Room temperature display
— Backlight timeout
Sound and contrast ··· Page 41
Energy saving ··· Page 42
LED Indicator ··· Page 48
— LED Indicator setting
— With Brightness sensor
Touch panel calibration ··· Page 51
Lock operations ··· Page 52
Sensor threshold setting ··· Page 54
— Occupancy sensor
— Brightness sensor
Set temp. range limit ··· Page 59
Auto return ··· Page 62
Screen cleaning ··· Page 65
Filter information ··· Page 66
Error information ··· Page 68

13
Screen display
Menu (Service) ··· Refer to the Installation Manual for details.
Setup
IC Function settings
Zones setting
Name setting
Cool/Heat display
Telephone number
LED color adjustment
Reset RC
Error menu
Self check
Test run
Not all functions are available on all models of indoor units.

14
Screen display
Icon explanations
Function settings
Timer
The table below
summarizes the square
icons used in this manual.
The user password must be entered on the [Login page] to change settings.
There is no settings that can skip this process.
: Touch to move the cursor left.
: Touch to move the cursor right.
- : Touch to input the number.
* Changes cannot be made unless the correct
password is entered.
Indicates settings that can be changed only while the unit is in operation.
Indicates setting that can be changes only while the unit is not in operation
Indicates setting that can operate only Main remote controller
Indicates setting that can operate only Sub remote controller
Indicates functions that are not available when the buttons are locked.

15
Basic operations
Power ON/OFF
Button operation
ON/OFF
Touch the [ON/OFF] button to turn on or off the
indoor unit.
* The LED indicator will light up when the indoor unit is
turned on.
* The LED indicator display depends on the settings for the
function settings.
* The unit will operate with the previously-set operation
mode, set temperature, and fan speed.

16
Basic operations
Operation mode, Set temperature and Fan speed settings
Button operation
Operation mode
Touch the [Operation mode] button to go through
the operation modes in the following order.
Select the desired operation mode.
Cool Dry
*1 Fan
Heat
*1
Auto
*1
Cool Dry Fan Auto
Heat Auto_Cool Auto_Heat
*1 Operation modes that are not available for the
connected indoor unit will not appear on the display.
* LED indicator color changes according to the operation
mode and the settings for the function settings.

17
Basic operations
Button operation
Set temperature
Cool, Heat, or Auto mode
Touch or to decrease or increase the set
temperature.
• Refer to the table on page 18 for the settable
temperature range for different operation modes.
• Set temperature cannot be set for the Fan mode.

18
Basic operations
▌
Set temperature range
Operation mode Set temperature range
Cool/Dry 19–30ºC (67–87ºF) *1*2
Heat 17–28ºC (63–83ºF) *1*2
Auto 19–28ºC (67–83ºF) *1*2
Fan Not settable
*1 The settable temperature ranges vary, depending on the indoor unit model.
*2 Restrictions for the set temperature range will apply, if any. If the setting value is outside of the range, a message
“Temp. range locked” will appear.

19
Basic operations
Button operation
Fan speed
Touch the [Fan speed] button to go through the fan
speeds in the following order.
Select the desired setting.
Auto
• The number of available fan speeds depends on the
indoor unit model.
<Note>
The actual fan speed will differ from the fan speed
displayed on the LCD when one of the following conditions
is met.
• While “Standby” or “Defrost” is displayed
• When the room temperature is higher than the set
temperature during the heating mode
• Immediately after the heating operation (during stand by
for switching the operation mode)
• During the Dry mode

20
Basic operations
Zone ON/OFF
Button operation
Zone ON/OFF
Touch the [ON/OFF] button to turn on or off the each
zones.
OFF ON SPL*1
*1 When all zones are fully closed, a zone which is set to
as spill zone will open automatically.