MITSUBISHI ELECTRIC RC-EX3D Path Ceiling Cassette Euroraster Instruction Manual

MITSUBISHI ELECTRIC RC-EX3D Path Ceiling Cassette Euroraster

Product Information

• Specifications
  • Model: RC-EX3D PJZ012D151
  • Part Number: 202306
  • Power: AC 110-240V
  • Frequency: 50/60Hz
  • Max Cable Length: 600m
  • Wire Size: 0.5 mm2 x 2-core to 2.0 mm2 x 2-core

Product Usage Instructions

• Safety Precautions
  • Always follow the safety precautions mentioned in the manual to prevent any accidents or damages. Make sure to read and understand the warnings and cautions provided.
• Accessories & Preparation
  • Ensure you have all the necessary accessories like a switch box, steel pipe, lock nut, bushing, lacing, putty, molly anchor, and R/C cable as per the installation requirements. Prepare them according to the installation procedures outlined.
• Installation Place
  • Choose a suitable installation space as per the provided guidelines. Decide whether you will embed the wiring or expose it based on your preference. Consider the wiring direction for optimal installation.
• Installation Procedure
  • Follow the installation procedure step by step. Ensure proper fixing of components and wiring as per the diagram provided. Take care to protect the equipment from moisture and dust during installation.

FAQs

• Q: What should I do if the cable length exceeds 100m?
  • A: When the cable length is longer than 100m, use wires of size up to 0.5 mm2 x 2-core to connect to larger wires outside the R/C case. Take measures to prevent water ingress when connecting the wires.
• Q: Can I choose the wiring direction for installation?
  • A: Yes, you can select from Backward, Upper centre, or Upper left wiring directions based on your installation requirements.

This installation manual describes the installation method and cautions related to the remote controller. Refer to the manual together with manuals attached to the indoor unit, outdoor unit and other. Be sure to read this manual before work in order to work correctly.

Safety Precautions

• Please read this manual carefully before starting installation work to install the unit properly.
• Every one of the followings is important information to be observed strictly.
• WARNING Failure to follow these instructions properly may result in serious consequences such as death, severe injury, etc.
• CAUTION Failure to follow these instructions properly may cause injury or property damage.
• It could have serious consequences depending on the circumstances.
• The following pictograms are used in the text.
• Keep this manual at a safe place where you can consult with whenever necessary. Show this manual to installers when moving or repairing the unit. When the ownership of the unit is transferred, this manual should be given to a new owner.

WARNING

Accessories & Prepare on site

The following parts are provided.

• Accessories
  • R/C main unit, wood screw (ø3.5 x 16) 2 pcs, Quick reference

The following parts are arranged at the site. Prepare them according to the respective installation procedures.

When the cable length is longer than 100 m, the max size for wires used in the R/C case is 0.5 mm2 . Connect them to wires of larger size near the outside of R/C. When wires are connected, take measures to prevent water, etc. from entering inside.

• ≦ 200 m 0.5 mm2 x 2-core
• ≦ 300m 0.75 mm2 x 2-core
• ≦ 400m 1.25 mm2 x 2-core
• ≦ 600m 2.0 mm2 x 2-core

Installation

Installation place

• Secure the installation space shown in the figure.
• For the installation method, “embedding wiring” or “exposing wiring” can be selected.
• For the wiring direction, “Backward”, “Upper center” or “Upper left” can be selected.
• Determine the installation place in consideration of the installation method and wiring direction.

Installation procedure

Perform installation and wiring work for the remote controller according to the following procedure. Dimensions (Viewed from the front)

In the case of embedding wiring (When the wiring is retrieved “Backward”)

1. Embed the switch box and the R/C wires beforehand. Seal the inlet hole for the R/C wiring with putty.
2. When wires are passed through the bottom case, fix the bottom case at 2 places on the switch box.
3. Connect wires from the X and Y terminals of R/C to the X and Y terminals of the indoor unit. R/C wires (X, Y) have no polarity. Fix wires such that the wires will run around the terminal screws on the top case of R/C.
4. Install the upper case with care not to pinch wires of R/C.

To disassemble the R/C case into the upper and lower pieces after assembling them once

• Insert the tip of flat head screwdriver or the like in the recess at the lower part of R/C and twist it lightly to remove.
• It is recommended that the tip of the screwdriver be wrapped with tape to avoid damaging the case.
• Take care to protect the removed upper case from moisture or dust.

Cautions for wire connection

• Use wires of no larger than 0.5 mm2 for wiring running through the remote control case.
• Take care not to pinch the sheath.
• Tighten by hand (0.7 N·m or less) the wire connection.
• If the wire is connected using an electric driver, it may cause failure or deformation.

In case of exposing wiring

(When the wiring is taken out from the “upper centre” or “upper left” of R/C)

1. Cut out the thin wall sections on the cases for the size of the wire.
   • When taking the wiring out from the upper centre, open a hole before separating the upper and bottom cases.
   • This will reduce the risk of damaging the PCB and facilitate subsequent work.
   • When taking the wiring out from the upper left, take care not to damage the PCB and not to leave any chips on cut thin wall inside.
2. Fix the bottom R/C case on a flat surface with two wood screws.
3. In the case of the upper centre, pass the wiring behind the bottom case. (Hatched section)
4. Connect wires from the X and Y terminals of R/C to the X and Y terminals of the indoor unit. R/C wires (X, Y) have no polarity. Fix wires such that the wires will run around the terminal screws on the top case of R/C.
5. Install the top case with care not to pinch wires of R/C.
6. Seal the area cut in ① with putty.

Main/Sub setting when more than one remote controls are used

Up to two units of R/C can be used at the maximum for 1 indoor unit or 1 group. One is the main R/C and the other is sub-R/C. The operating range is different depending on the main or sub R/C.

Advice: Connection to personal computer

• It can be set from a personal computer via the USB port (mini-B).
• Connect after removing the cover for USB port of upper case.
• Replace the cover after use.
• Special software is necessary for the connection.
• For details, view the web site or refer to the engineering data.

Advice: Initializing of password

• Administrator password (for daily setting items) and service password (for installation, test run and maintenance) are used.
• The administrator password at factory default is “0000”. This setting can be changed (Refer to User’s Manual). If the administrator password is forgotten, it can be initialized by holding down the [F1] and [F2] switches together for five seconds on the administrator password input screen.
• Service password is “9999”, which cannot be changed. When the administrator password is input, the service password is also accepted.

Advice
When connecting two or more FDT/FDTC to one R/C, unify the panel type either to a panel with anti draft function or a standard panel.

Power on and initial setting

Set the main and sub R/C units according to the display at the power on.

• Main/Sub setting not performed => (1)
• Main/Sub setting performed => (2)

1. When the main and sub are not yet set,
   • ①⇒② Main/sub input screen is displayed.
   • When tapping the Main or Sub button, initial setting starts.
   • If any wrong button has been tapped by mistake, the setting can be changed after the end of the initializing operation. (10. R/C function setting④)
   • When using two remote controllers for one IU or one group, if the first one is set for the Main , the second is set for the Sub automatically.
   • Caution: When only one unit of R/C is used, tap the Main button. In the state of initial setting, if either one of buttons ([Main]/[Sub]) is not tapped, it keeps the screen unchanged.
   • The red LED will blink if communication is not established in ten minutes.
2. When the main and sub are set
   • Yes The screen changes to ⑧⇒⑤.
   • No The screen changes to ⑦.
   • If the screen is not tapped for more than 15 seconds, the Yes (Continue) is selected and the display changes to the screen of ⑤.
   • Yes The screen changes to ①⇒②.
   • No The screen changes to ⑥.
   • After the initializing, it returns to the default state.

Installation settings and test run

TOP screen Menu ⇒ Service setting ⇒ Installation settings ⇒ Service password

The selected screen is displayed.

• Select the date with buttons, and tap the Set button.
• Enter the company information.
• Enter the company name using up to 26 one-byte characters and then tap the Set button. You can enter alphanumeric, Cyrillic, or characters.
• Enter the phone number of the company using up to 13 characters and then tap the Set button.
• The selected screen is displayed.
• This can be operated while cooling is stopped. When the room temperature is too low to start the cooling test run, it operates for 30 minutes by decreasing the set temperature to 5°C.
• This is operable in case of connecting duct type IU equipped with the external static pressure adjustment function. Select the external static pressure and tap the Set button.
• The drain pump can be operated independently.
• In case of Multi series (KX) models, the IU addresses registered with the auto-address setting method can be changed with this function.
• This function changes the OU address for each IU. Select an IU and,
  • When an indoor unit is selected and the Change button is tapped, the display changes to the Change auto-address screen ⑪.
  • Tap the Set button to return to the screen ⑩ and display the new address.
  • Tap the Finish button to register the new address.
  • Set this when sharing a Shut-off valve/ Refrigerator leak detector among two or more IUs.
  • Set the address of the Main IU to the Sub IUs. For installation conditions required to be set, refer to the installation manual of each device or the safety measure manual.
• In case of Multi Series (KX) models, it is possible to let indoor units (Sub IUs) follow the operation mode (Heating, cooling) of the indoor unit (Main IU). Set the address of the Main IU to the Sub IUs. The Sub IUs to which the Main IU address is set follow the Main IU settings.
• (Figure shows the Shut-off valve)
• In case of 2 sets of indoor units (2 groups) connected to one R/C, it is available to perform back-up operation with them.
  1. IU rotation: Operate 2 sets of indoor units alternately at every set time of operation interval.
  2. IU capacity back-up: When the temp difference between the set temp and the actual room temp is higher than the set temp diff., 2 sets of indoor units operate.
  3. IU fault back-up: If one of the IU has a fault and stops, the other one starts operation. Since all IU stop operation, if a refrigerant leak is detected (E23 is displayed), the IU fault back-up is invalidated. Select Enable / Disable (tapping Disable changes to Enable ) and tap the Enter button to confirm the settings.
• In IU rotation function, the timer to changeover the operation of 2 indoor units is set. The timer can be set within the range of 1 to 999 hours in increments of ten hours. After the time is changed, tap Set for temporary setting. After temporary setting, return to the IU Back-up function screen and tap Enter.
• The difference between the setting temperature for a change between one unit and two units for capacity back-up and room temperature is set. The temperature can be set within the range of 2 to 5 °C in increments of 1 °C. After the temperature is changed, tap Set for the temporary setting. After the temporary setting, return to the IU Back-up function screen and tap Enter.

Back-up control restrictions

1. The back-up control is unavailable when the operation mode is “Auto”. When the back-up control is set for the air conditioner that specifies “Auto” for the operation mode, the operation mode changes to “Cooling” automatically.
2. When the rotation control is set, the fault back-up control will be enabled automatically. In this case, the fault back-up control cannot be disabled alone. When the rotation operation is disabled, the fault back-up control will also be disabled.
3. When the capacity back-up control is set, the fault back-up control will be enabled automatically. In this case, the fault back-up control cannot be disabled alone. When the capacity back-up control is disabled, the fault back-up control will also be disabled.
4. It is also possible to enable the fault back-up control alone.
5. The home leave mode, warming up and external input cannot be set together with the back-up control.
6. While the rotation or fault back-up control is set, either of the two target indoor units (two groups) will operate. Both units will not operate at the same time.
7. An indoor unit having younger address will start the operation first in each control.

Caution

• For customers who adapt a motion sensor, please proceed the setting shown on the left and enable the indoor unit to be used to detect the activity amounts of persons.
• When the motion sensor is disabled, activity amounts of persons will not be detected and thus the motion sensor control (power saving and auto-off) will not be performed.
• For indoor units without a motion sensor, tap the Motion sensor setting to display “Invalid request”.
• Select Enable / Disable for the motion sensor of the indoor unit connected to the R/C.

Select Enable / Disable for R/C alarm sound.

• Enable Sounds the alarm if a refrigerant leak is detected or the Refrigerant leak detector gets into trouble. Sound volume of alarm is about 60dB at 1 m from the R/C.
• Disable The alarm does not sound even if a refrigerant leak is detected or the Refrigerant leak detector gets into trouble.
• Select Enable / Disable for the auto anti-draft of the indoor unit connected to the R/C.

Caution

• For customers who adapt an auto anti-draft control. Please proceed with the setting shown on the left.
• Unless Enable is selected, auto anti-draft control does not operate.
• For indoor units without an auto anti-draft control, tap the Auto anti-draft control setting to display “Invalid request”.

Select Enable / Disable for the UV-C drain of the indoor unit connected to the R/C.

Caution

• For customers who adapt an UV-C drain. Please proceed the setting shown on the left.
• Unless Enable is selected, UV-C drain does not operate.
• For indoor units without an UV-C drain, tap the UV-C drain setting to display “Invalid request”.

R/C function settings Advice: It is valid when unit stops.

TOP screen Menu ⇒ Service setting ⇒ R/C function settings ⇒ Service password

1. The selected screen is displayed.
2. Use this when changing the Main/Sub setting of R/C.
3. Thermo. rule is applied based on the temperature detected with the return air temp sensor of IU. When plural indoor units are connected to one R/C, the return air temp applied to the thermo. rule can be selected.
4. Individual Master IU Averaged temp
5. Individual： Thermo. rule is applied based on the return air temp of each IU. When plural units are connected to one R/C, it is based on the return air temp of the main unit.
6. Master IU： Thermo. rule is applied based on the return air temp of IU having the youngest address out of IUs connected. If there are several sets of plural units each of which is connected to one R/ C, it is based on the IU having the youngest address out of the main units of each plural units.
7. Averaged temp： Thermo. rule is applied based on the average of return air temperatures of IUs connected.
8. You can change the IU main unit return air temperature sensor to the R/C side.
9. Disable The Indoor temp display changes to the temperature measured by the sensor at the main unit.
10. Enable The Indoor temp display changes to the temperature measured by the R/ C side sensor.
11. Enable (Heating only) The Indoor temp display changes to the temperature measured by the R/C side sensor during heating only.
12. Enable (Cooling only) The Indoor temperature display changes to the temperature measured by the R/C side sensor during cooling only.
13. Select a R/C sensor to use. Connected R/C is displayed.
14. You can adjust the R/C sensor detection temperature. The R/C sensor detection temperature during cooling operation can be corrected. Set the value within the range of -3 to +3.
15. Enable or Disable can be set for each operation mode. If the cooling or heating is disabled, the auto is also disabled.
16. Select the unit of temperature displayed on the R/C.
17. Fan speed can be changed to the selected one. It may not be available to select some of fan speeds depending on indoor unit models.
18. Set the range to apply the external input received through CNT of either one IU to plural indoor units connected in one system
    • Individual This is applied only to the IU receiving CNT input.
    • All units This is applied to all indoor units connected.
19. Stop at fixed position The upper/ lower flap can be set to stop at one of four positions. Stop at any position The flap can be set to stop at any position immediately after operating the R/C switch.
20. Fixed position stop The left/right flap can be set to stop in eight different patterns. Stop at any position The flap can be set to stop at any position immediately after operating the R/C switch.
21. Set this when a ventilation device is connected.
    • Disable No ventilation device is connected. Interlocking Ventilation is interlocked with the Run/Stop of air conditioner and operate the Ventilation output.
    • Independent If the ventilation is selected from the menu, only the ventilation device is operated or stopped independently.
22. Auto-restart
    • If the unit stops during operation,
    • Enable It returns to the state before the power failure as soon as the power supply is restored (After the end of the primary control at the power on).
    • Disable It stops after the restoration of power supply.
23. Auto temp setting
    • Enable Auto can be selected on the room temperature setting screen.
    • Disable Auto selection switch will not be displayed on the room temperature setting screen.
24. Auto fan speed
    • Enable Auto can be selected on the fan speed setting screen.
    • Disable Auto selection switch will not be displayed on the fan speed setting screen.
    • (Figure shows the Auto-restart)

IU settings Advice: It is valid when unit stops.

TOP screen Menu ⇒ Service setting ⇒ IU settings ⇒ Service password

1. When plural indoor units are connected, they are displayed on the screen. 000 to 015 Individual settings are performed for indoor units. All units The same setting applies to all units.
2. The display changes to ④ after receiving data from the IU.
3. The selected screen is displayed.
4. Set the fan speed tap for the IU. Refer to the engineering data for details.
5. Set the time to display the filter sign.
   | Standard
   ---|---
   No display| None
   Setting 1| 180Hr
   Setting 2| 600Hr
   Setting 3| 1,000Hr
   Setting 4| 1,000Hr Operation stop
6. Set the control at the time when the signal is input to the external input 1 (CNT) of IU. Refer to the engineering data for details.
7. Set the signal type to input to the external input 1 (CNT) of IU. Refer to the engineering data for details.
   • This is operable when the IU equipped with the external input 2 is connected. Refer to the engineering data for details.
8. Heating thermo-OFF temp adjustment
   • Adjust the temperature for judging to make the thermostat ON or OFF during the heating operation. Adjustable range is 0°C / +1°C / +2°C / +3°C.
9. Return temperature adjustment
   • Adjust the main return air temperature sensor detection temperature. Adjustable range is -2°C / -1.5°C / -1°C / 0°C / +1°C / +1.5°C / +2°C.
   • (Figure shows the heating room temperature correction.)
10. Fan control in cooling thermo-OFF
11. Fan control in heating thermo-OFF Set the fan speed at the cooling/heating thermo-OFF.
    • Low The fan runs at the low speed.
    • Set fan speed The fan runs at the same speed as that during the thermo-ON operation.
    • Intermittent Cycles of Lo fan operation for 2 minutes and stop for 5 minutes are repeated.
    • Stop The fan is stopped.
    • (Figure shows the cooling fan control.)
12. Set the fan control during the anti-frost control.
    • Enable The fan speed increases duringthe anti-frost control.
    • Disable The fan speed does not change during the anti-frost control.
13. Select the anti-frost control temperature.
14. Standard (in cooling & dry) Operates in cooling and dry modes. Operate in standard & heating Operates in cooling, dry and heating modes. Operate in heating & fan Operates in all modes. Operate in standard & fan Operates in cooling, dry and fan modes.
15. Keep fan operating after cooling is stopped
16. Keep fan operating after heating is stopped
    • Select the residual fan operation period after stopping and the thermo-OFF in cooling/heating mode.
    • No setting Residual fan operation not performed.
    • Setting 1 0.5 hours
    • Setting 2 2 hours
    • Setting 3 6 hours
    • Residual time may vary.
17. Select the fan control after the residual fan operation following stop and thermo-OFF in heating mode.
    • Stop Intermittent fan operation is not done.
    • Stop for 20 min & run for 5 min Check the operating conditions at every 25 min and run the fan for 5 min.
    • Stop for 5 min & run for 5 min Check the operating conditions at every 10 min and run the fan for 5 min.
18. Set this when operating the fan as a circulator.
    • Disable During the fan operation, the fan runs continuously.
    • Enable During the fan operation, the fan runs and stops based on the difference between temperatures detected with the R/C sensor and the return air sensor.
19. Set the control pressure when connecting the outdoor air conditioning unit to the Multi (KX) System.
    • Standard Normal
    • Type1 When all operating IUs are in this mode, the control pressure value is changed.
20. The method of switching between cooling and heating in the auto operation mode can be selected from three options.
21. Set the condition for each method.
    • Auto 1 The temperature difference between the set temp and the actual room temperature switch cooling and heating.
    • Auto 2 The temperature difference between the set temp and the actual room temp/outdoor temperature switch cooling and heating.
    • Auto 3 The actual room temp and outdoor temperature switch cooling and heating.
22. Set the temperatures switching to cooling and heating. Switching temperatures can be set within the range of 1°C to 4°C.
    • [Set temp – Temp switching to cooling] < [Indoor return air temp] ⇒ Operation mode: Cooling
    • [Set temp + Temp switching to heating] > [Indoor return air temp] ⇒ Operation mode: Heating
23. Set the temperatures switching to cooling and heating and the outdoor temp settings to limit cooling and heating.
    • “[Set temp – Temp switching to cooling] < [Indoor return air temp]” and “[Outdoor temp, cooling] < [Outdoor air temp]” ⇒ Operation mode: Cooling
    • “[Set temp – Temp switching to cooling] > [Indoor return air temp]” and “[Outdoor temp, cooling] > [Outdoor air temp]” ⇒ Operation mode: Heating
24. Set the outdoor temperature settings to limit in cooling and heating and the indoor temperature settings to limit in cooling and heating.
    • “[Indoor temp, cooling] < [Indoor return air temp]” and “[Outdoor temp, cooling] < [Outdoor air temp]” ⇒ Operation mode: Cooling
    • “[Indoor temp, heating] > [Indoor return air temp]” and “[Outdoor temp, heating] > [Outdoor air temp]” ⇒ Operation mode: Heating
25. Temp switching to cooling
26. Temp switching to heating
    • Set the temperature switching to cooling/heating with Auto 1 and Auto 2.
    • Cooling: 1 to 4 °C
    • Heating: 1 to 4 °C
27. Outdoor temp set for cooling
28. Outdoor temp set for heating
    • Set the outdoor temperature for cooling/heating with Auto 2 and Auto 3.
    • Cooling: 10 to 30 °C
    • Heating: 10 to 22 °C
29. Indoor temp set for cooling
30. Indoor temp set for heating
    • Set the indoor temperature for cooling/heating with Auto 3.
    • Cooling: 18 to 30°C
    • Heating: 10 to 30 °C
    • (Figure shows the Temp switching to cooling)
31. Set the room temperature control, thermostat ON/OFF switching method and condition. Standard The thermostat judges based on the indoor temperature and set temperature.
32. Outdoor temp basis The thermostat judges based on the outdoor temperature and the cooling and heating offset values. The room temperature setting will be disabled.
33. Outdoor temperature cooling correction
34. Outdoor temperature heating correction Set the correction value to judge cooling/heating with the thermostat within the following range.
    • Cooling: 0 -10˚C Indoor temperature > (Outdoor temperature – Cooling correction value)
    • Heating: 0 – 5˚C Indoor temperature < (Outdoor temperature – Heating correction value)
35. Set the switching range of the fan tap at the auto fan speed setting.
    • Auto 1 The fan tap is changed in the range of High ⇒ Medium ⇒ Low.
    • Auto 2 The fan tap is changed in the range of Powerful high ⇒ High ⇒ Medium ⇒ Low.
36. When the room temperature differs to some extent from the setting temperature at 30 minutes after the start of operation, the overload alarm signal is transmitted from the external output (CNT-5).
37. Select the output destination to change and then select the function to be allocated to the selected output. The following shows output connectors and defaults.
    • External output 1 ＣＮＴ-2 Operation output
    • External output 2 ＣＮＴ-3 Heating output
    • External output 3 ＣＮＴ-4 Compressor ON output
    • External output 4 ＣＮＴ-5 Inspection (Error) output
    • Refer to the engineering data for details.

    • Functions that can be set****
      Operation output

      Heating output
      Compressor ON output
      Inspection (Error) output
      Cooling output
      Fan operation output 1
      Fan operation output 2
      Fan operation output 3
      Defrost/oil return output
      Ventilation output
      Heater output
      Free cooling output
      Indoor unit overload alarm output
      Refrigerant leakage output
      Shut off valve output

Service & Maintenance

TOP screen Menu ⇒ Service setting ⇒ Service & Maintenance ⇒ Service password

1. The selected screen is displayed.
2. When 8 or more units are connected, further data are displayed on the next page. When the Check button is tapped after selecting an IU address, the fan of the selected IU can be operated.
3. When the next service date is entered, messages are displayed at the start/stop of operation on the service month. Contents are reset if the next service date is updated. If the No setting button is tapped, messages are not displayed.
4. Displays operation data. Data on the screen is updated automatically. Tapping the Display button after selecting six items changes the display. Items of operation data to be displayed are as shown by the table at right.
5. The date and time when the error occurred, IU address and Error Code are displayed.
6. Tap the Delete button to delete the error history.
7. The operation data obtained just before the occurrence of an error are displayed. Operation data to be displayed are as shown by the table at right.
   • Operation data to be displayed****
     No.| Item| No.| Item
     ---|---|---|---
     01| Operation mode| 21| Outdoor air temp
     02| Set temp| 22| OU heat exch. Temp 1
     03| Return air temp| 23| OU heat exch. Temp 2
     05| IU heat exch. Temp 1| 24| Compressor HZ
     06| IU heat exch. Temp 2| 25| High pressure
     07| IU heat exch, Temp 3| 26| Low pressure
     08| IU fan speed| 27| Discharge pipe temp
     09| Required Hz| 28| Comp bottom temp
     10| Answer Hz| 29| Current
     11| IU EEV opening| 30| SH control
     12| IU operation Hrs.| 31| SH
     13| Supply air temp| 32| TDSH
     | 33| Protection control
     34| OU fan speed
     35| 63H1
     36| Defrost
     37| Comp. running Hrs
     38| OU EEV1 opening
     39| OU EEV2 opening
8. The anomaly data is erased.
9. The time count is reset by resetting the periodical check.
10. Save IU settings All settings of the IUs connected to the R/C are saved in the R/C. Automatic saving Set the time when the automatic saving is performed every day. Transfer the saved data The IU setting data saved in the R/C are transferred to an indoor unit.　
11. Set the time when the automatic saving is performed every day. If the No setting button is tapped, the automatic saving is not performed.
12. If an IU to which the saved data is transferred is selected, the Transfer the saved data acknowledge screen is displayed. Tap Yes to transfer the data.
    • Advice: Have you ever lost setting contents after replacing an IU board? When IU settings are saved in the R/ C, the saved data can be written to IU using “Transfer the saved data”.
13. The selected screen is displayed.
    • Erase IU address The Memory of the IU address for the multi (KX) unit is erased.
    • CPU reset Microcomputer of IU and OU, shut-off valve and refrigerant leak detector on connected are reset (State of restoration after power failure).
    • Restore of default setting Settings on R/C and IU connected are initialized (State of factory default).
    • Touch panel calibration Use this to correct when the display and the touch position are not matched.
14. Use this when the display and the touch position are not matched. Tap the centre of [+] and check the deviation from the display.
    • Finish ⇒ Calibration is completed.
15. The types and capacities of IUs connected to the R/C are displayed. These items may not be displayed depending on the combination of IUs and OUs.
16. The selected screen is displayed.
17. The selected screen is displayed.
18. Displays the state of the shut-off valve at screen shift. Items to be displayed are as shown by the table at down.
19. To update the screen, shift once more to the screen.

    • Display items****
      Shut-off valve (liq)

      Shut-off valve (gas)
      Coil electrified time
      Open/Close times
      Coil replace
      SOV replace

20. Resets Shut-off valve replacement notice.
21. Displays the connection state of IU and devices at the screen shift. To update the screen, shift once more to the screen.
22. The selected screen is displayed.
23. Saves operation hours of selected refrigerant leak detector in the R/C.
24. Transfers operation hours saved in the R/C to the refrigerant leak detector.
25. The selected screen is displayed.
26. Set UV-C drain radiation time.
    • Standard Repeats 15-minute radiation /60-minute stop.
    • High 1 Repeats 30-minute radiation /60-minute stop.
    • High 2 Operates the drain pump for 1 minute (about once per hour) after repeating 30-minute radiation/60-minute stop + operation stop.
    • UV-C drain operates when:
    • During cooling or dry operation
    • When cooling or dry operation is stopped.
27. Resets the UV-C drain operation hours.

Select the language

【Selecting the language with the button】

1. Tap the button on the TOP screenwhile the air conditioner is stopped.
   • Depending on how the Permission/ Prohibition setting (Refer to user’s manual) is set, the administrator password input screen may be displayed.
2. The menu for select the language is displayed. Select the language to be displayed on the R/ C and tap the Set button.
   • You can select from the following languages: English/German/French/Spanish/Italian/ Dutch/Turkish/Portuguese/Polish

【Selecting the language with the Menu button】

TOP screen Menu ⇒ Useful functions ⇒ Select the language

1. The menu for selecting the language is displayed. Select the language to be displayed on the R/C and tap the Set button.
   • You can select from the following languages: English/German/French/Spanish/Italian/ Dutch/Turkish/Portuguese/Polish

RC-EX3D PJZ012D151 202306

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