USER’S MANUAL CENTRAL CONTROL SC-SL2N-E USER’S MANUAL ENGLISH CENTRAL CONTROL SC-SL2N-E MANUEL DE L’UTILISATEUR FRANÇAIS COMMANDE CENTRALISEE SC-SL2N-E ANWENDERHANDBUCH DEUTSCH ZENTRALSTEUERUNG SC-SL2N-E ISTRUZIONI PER L’USO ITALIANO CONTROLLO CENTRALE SC-SL2N-E MANUAL DEL PROPIETARIO ESPAÑOL CONTROL CENTRAL SC-SL2N-E GEBRUIKERSHANDLEIDING NEDERLANDS CENTRALE BEDIENING SC-SL2N-E MANUAL DO UTILIZADOR PORTUGUÊS CONTROLO CENTRAL SC-SL2N-E This central control complies with EMC Directive 20
Thank you very much for employing the Central control of Mitsubishi Heavy Industries, Ltd. Before using, read through this instruction manual for proper operation. After reading through it, carefully store it for future reference. If any trouble should occur during operation, it will be helpful. Also, read through the instruction manual which is attached to the air conditioner. Table of contents N N N N N N N N N N N N N N N N N N N N N N N N N N N ENGLISH Safety precaution ............................
Safety precaution L L L Before starting to use the central control, read these “Safety precaution” carefully to ensure proper operation of the central control. The safety precautions are classified as “ DANGER” and “ CAUTION”. Precautions as shown in the column “ DANGER” indicate that improper handling could have serious consequences like death, serious injury, etc. “ CAUTION” might pose a serious problem, depending on the circumstances.
Names and Functions of Parts The diagram below shows the central control with its cover closed. You can open the cover downward by placing a hand on the indentation sections on the left and right sides and pulling toward you. RUN / ERROR / PERIODIC CHECK display lamps These display the run status for each group. RUN: Lit up green There is at least one running indoor unit in the group. STOP: Off All the indoor units in the group are either stopped or unregistered (not connected).
The diagram below shows the central control with its cover open. Also, for the sake of the explanation, all the contents of the LCD display section are shown. CENTER / REMOTE display Displays which is in effect, the central control or the local remote controllers. PROGRAM SET display Displayed when a program is being set. TIME SET display Displayed when the current date and time are being set. TIME display Displays the time. GROUP SET display Displayed when the units to be managed are being set.
REMOTE CONTROL OPERATION ENABLE / DISABLE display Displays items for which remote control operation is disabled. HOLIDAY SET display Displayed when a program for holidays is set. INVALID INPUT display Displayed when a button input is invalid. FAN SPEED display Displays the fan speed. MAINTENANCE display Displayed when there is a managed unit requiring a check. PROGRAM CONFIRM display Displayed when a set program is displayed.
Setting the Time and Date Program running uses the date and time set here as the standard. Please set the current date and time correctly. 1 2, 4, 6, 8, 10, 12 3, 5, 7, 9, 11 1. Press the MENU button and select . Each time you press this button, the display moves to the next step in the sequence in the diagram below. Off The flashes. 2. Press the SET button. The lights up and the year display section flashes. Day display section Month display section Year display section 3.
. Press the SET button. The time hour display section flashes. 9. Press the SELECT ( or ) button or a GROUP No. button to set the time (hour). When you press or , first 09:00 is displayed. You can use the GROUP No. buttons as number keys. Example 1: “--:--” ⇒ You press the 10 (0) button. ⇒ “00:--” ⇒ You press the 08 button. ⇒ “08:--” Example 2: “--:--” ⇒ You press the 01 button. ⇒ “01:--” ⇒ You press the 03 button. ⇒ “13:--” 10. Press the SET button. The time minute display section flashes. 11.
1. Press the MENU button and select . Each time you press this button, the display moves to the next step in the sequence in the diagram below. Off The flashes. 2. Press the SET button. The lights up and “01-00” flashes. 3. Press the GROUP No. button for the group to be set. The selected group number flashes. Example: 02-00 4. Press the SELECT ( or ) button to set the indoor unit number. The selected unit number flashes. Example: 02-05 Steps 3 and 4 can be in either order. 5. Press the SET button.
How to Make Settings for One Unit When managing an indoor unit with this central control without registering in any group, you can set individual unit management with the operations below. 1 2, 5, 7 3 4, 6 1. Press the MENU button and select . Each time you press this button, the display moves to the next step in the sequence in the diagram below. Off The flashes. 2. Press the SET button. The lights up and “01-00” flashes. 3 . Press the RESET button. The GROUP No. display section flashes “--”.
To change the indoor unit number and continue with individual settings, after Step 5, repeat Steps 6 and 7. 6. Press the SELECT ( or ) button to set the indoor unit number. 7. Press the SET button. Note • To end the setting or to cancel settings being made, press the MENU button. • An indoor unit set individually can not be set for program operation or other group settings from this central control. It is subject to “RUN ALL”, “STOP ALL”, and emergency stop input.
4. Press the RESET button. The GROUP No. display section becomes blank. Example: “ 00” 5. Press the SELECT ( or ) button to set the indoor unit number. The selected unit number flashes. Example: “ 05” 6. Press the SET button. The UNIT No. lights up and after 2 seconds, flashes. With this, the display unit number is registered as not being managed. When you set a registered unit number as not being managed, the number of managed units decreases.
2. Press the SELECT ( or ) button to select the consecutive setting end unit number. 3. Press the SET button. The consecutive setting end unit number lights up and after 2 seconds, flashes. Pressing the SELECT ( or ) button returns the display to 2. Note • To end the setting or to cancel settings being made, press the MENU button. • Pressing the RESET button or a GROUP No. button ends consecutive setting. Convenient Functions The number of units currently being managed is displayed as .
CENTER / REMOTE Setting Set whether to manage the indoor units being managed centrally using the central control or locally using the remote controller that comes with each indoor unit. Z Setting contents and enabled / disabled button operations Setting contents Enabled / disabled button operations CENTER Operation is only possible from the central control. Operation with an indoor unit’s remote controller is not possible.
How to Enable / Disable Operations for Each Remote Control Function It is possible to disable some operation functions (“temperature”, “operation mode”, “fan speed”, “run / stop”) for the indoor unit’s remote controllers. 1 2 3, 5 (4) 1. With normal running or stopping display (not in any setting mode *), press the ALL / GROUP / ONE button and select either , , or . The options are displayed in the order.
How to Run / Stop All This runs or stops all the indoor units being managed. Method A RUN STOP < RUN > Press the RUN ALL button. All the indoor units being managed run and the RUN/ERROR display lamp lights up green. < STOP > Press the STOP ALL button. All the indoor units being managed stop and the RUN/ERROR display lamp goes out. Method B 1 2 < RUN > 1. Press the ALL / GROUP / ONE button and select ALL. The options are displayed in the order. 2. Press the RUN button. < STOP > 1.
How to Run / Stop a Group This runs or stops a group. Method A RUN / ERROR display lamp GROUP RUN / STOP button < RUN > With the air conditioners stopped (RUN / ERROR display off), press a GROUP RUN / STOP button All the indoor units in the group run and the RUN / ERROR display lamp lights up green. < STOP > With the air conditioners running (RUN / ERROR display lamp lit up green), press a GROUP RUN / STOP button. All the indoor units in the group stop and the RUN / ERROR display lamp goes out.
How to Run / Stop One Unit This runs the selected indoor units. 1 2 3 1. Press the ALL / GROUP / ONE button and select . The options are displayed in the order. 2. Press the SELECT ( or ) button to set the indoor unit number to run or stop. 3. Press the RUN or STOP button. Note • This operation is only possible for indoor units whose CENTER / REMOTE setting is “CENTER” or “CENTER and REMOTE”. This operation is disabled on indoor units set to “REMOTE”.
How to Set Run Details This sets the operation mode, temperature, fan speed, and louver direction. 1 2 3 5 6 4 1. Press the ALL / GROUP / ONE button and select either , , or . The options are displayed in the order. 2. Press the SELECT ( or ) button to set the group number or unit number. If ALL is selected in Operation 1, skip Operation 2. To select all the groups, select “88”. 3. Press the MODE button and select the operation mode. The options are displayed in the order.
Note • This operation is only possible for indoor units whose CENTER / REMOTE setting is “CENTER” or “CENTER and REMOTE”. This operation is disabled on indoor units set to REMOTE. • After central control operation, it may take a few minutes until the indoor unit settings change. • For automatic operation, the indoor units automatically switch between “Cool” ⇔ “Heat” according to the difference between the set temperature and the room temperature to hold the room temperature constant.
3. Press the SELECT ( or ) button or a GROUP No. button to be set. To set the same program for all groups, select “88”. 4. Press the SET button. The group for which the program is to be set is decided. 5. Press the SELECT ( or ) button to set the day of the week. Align the mark on top of the days of the week with the day of the week to be programmed. If you press , the mark moves to the right while flashing. If you press , the mark moves to the left.
2. How to Set “RUN and TEMP (temperature setting) at On time” 13, 15 14 1 to 12. Input the On time. Execute Steps 1 to 12 on Pages 19 to 20. 13. With the Off time (hour) section displaying “--”, press the SET button. If you press the RESET button with the Off time set, the Off time (hour) section display becomes “--”. 14. Press the TEMP button ( or ) to set the temperature. 15. Press the SET button. The set temperature is decided and the setting is complete.
4. How to Set “STOP only at Off time” 10 9, 11 1 to 8. Set the program number. Execute Steps 1 to 8 on Pages 19 to 20. 9. With the On time (hour) section displaying “--”, press the SET button. If you press the RESET button with the On Time input, the On time (hour) display section becomes “--”. 10. Press the SELECT ( or ) button or a GROUP No. button to set the Off time (hour). 11. Press the SET button. The Off time (hour) lights up and the Off time (hour) is decided. 12.
Z How to Set the Next Day of the Week 1. In Step 7 or later, press the RESET button to return to Step 5 (with day of the week selection ing). Pages 19 to 20 2. Execute Step 5 to select the day of the week to set, then execute Steps 6 or later. flash- Z How to Set the Next Group 1. In Step 5 or later, press the RESET button to return to Step 3 (with day of the group number flashing). Pages 19 to 20 2. Execute Step 3 to select the group number to set, then execute Steps 4 or later.
4. Press the SET button. The contents of the program settings for all days of the week are copied. The copy destination group lights up for 2 seconds, then flashes. After Step 4, execute the operations in Steps 3 and 4. Press the ALL / GROUP / ONE button to put out or . This ends the program copying and returns to program setting.
3. Press the SELECT ( or ) button or a GROUP No. button to select the group number to be set. To select all the groups, select “88”. 4. Press the SET button. The group number is decided. 5. Press the SELECT ( or ) button to select the day of the week. Align the mark on top of the days of the week with the day of the week to be programmed as a holiday. If you press , the mark moves to the right while flashing. If you press , the mark moves to the left. 6. Press the SET button.
2. Press the SET button. 3. Press the SELECT ( or ) button or a GROUP No. button to select the group number to be set. To select all the groups, select “88”. 4. Press the SET button. The group number is decided. 5. Press the SELECT ( or ) button to select the day of the week. Align the mark on top of the days of the week with the day of the week to be released from programming as a holiday. 6. Press the SET button. The ( ) display goes out and the display becomes as follows.
2. Press the SET button. 3. Press the SELECT ( or ) button or a GROUP No. button to select the group number to be set. 4. Press the SET button. The group number is decided. 5. Press the SELECT ( or ) button to select the day of the week. Align the mark on top of the days of the week with the day of the week whose settings are to be confirmed. If you press , the mark moves to the right while flashing. If you press , the mark moves to the left. 6. Press the SET button. The day of the week is decided. 7.
How to Set an External Timer Unit An off-the-shelf timer can be connected to this central control. Set the indoor units to be run by the external timer. The set indoor unit is run or stopped by the signals from the external timer. 1 2 1. Press the ALL / GROUP / ONE button and select , , or . To set all the managed units, select . To set one or more groups, select , then press the SELECT ( or ) button to set the group number. To select all the groups, select “88”.
How to Set Demand Units Demand operation is not available in this central control. When a demand controller is connected to this central control, demand operation becomes possible. For indoor units for which demand is set, signals from the external demand controller change the operation mode to FAN and change the CENTER / REMOTE setting to . 1 2 1. Press the ALL / GROUP / ONE button and select , , or . To set all the managed units, select .
When Lights Up This is displayed when an invalid value is set or an invalid button operation is attempted. Check the button operation and unit state (CENTER / REMOTE setting etc.), then try the operation again. When the RUN / ERROR display lamp lights up red lights up or flashes or the check display Z There is an abnormality in an air conditioner.
When the Maintenance Display Lights Up or Flashes Z The time for periodic inspection has come. If there is one or more units being managed that requires inspection, the maintenance display lights up or flashes. Notify your dealer of the contents displayed. • The maintenance display lights up. • The maintenance display and “1” light up. • The maintenance display and “2” light up. • The maintenance display and “BACKUP” light up.
When the Clean Filter Display Lights Up / Flashes Z This shows that it is time to clean the air filter. Clean the air filter. For details on how to clean the filter, see the user’s manual that came with the air conditioner. The cumulative running time for even one of the connected indoor units reaches the set time, the clean filter display lights or flashes. Note • If there is even one abnormal unit, the indoor unit number for filter cleaning can not be checked.
1. When the maintenance display are lit up and “BACKUP” The outdoor unit is running in emergency mode and inspection is required. Please consult your dealer. 2. When the maintenance display and “1” are lit up The time for periodic maintenance of the outdoor unit already came. Please consult your dealer. 3. When the maintenance display and “2” are lit up This is a notice that it is time for periodic maintenance of the outdoor unit. Please consult your dealer. 4.
When the Running State of All or Some of the Indoor Units Set To Be Managed Is Not Displayed Z This may happen due to some inadequacy of the communication lines or the settings of this central control. Please consult your dealer. What You Should Know before Use Z Suction temperature display When an indoor unit is running, the suction temperature for the displayed indoor unit is displayed.
Z Emergency stop (The operations depend on the jumper line setting. For more information on jumper line settings, consult your dealer.) When the is flashing, an emergency stop signal is being input by the external contact. All the units being managed by this central control are stopped and the CENTER / REMOTE setting becomes . In this state, operation from remote controllers is impossible. During emergency stop input, RUN and CENTER / REMOTE operations from this central control are not possible.
Error History Z Error History Check Method (In Order of Occurrence) You can view the month, day, and time at which an error occurred for each indoor unit number and the corresponding error code. 3 2 1 3 1. Press the CHECK button and the button at the same time. The flashes and the contents of the latest error are displayed. If there is no error log, is displayed. Time of occurrence Month and day of occurrence 2. Press the or If you press the effect. button to select the indoor unit number.
Z How To Check the Error History for the Displayed Unit Number You can view the month, day, and time at which the most recent error occurred on the indoor unit being displayed and the corresponding error code. 3 2 1 3 1. Press the CHECK button and the button at the same time. The flashes and the month, day, and time of the latest error on the indoor unit being displayed are displayed. If there is no error log, “E--” is displayed.
Installation Do not install central control in Do not install central control in any Avoid any place which is exposed any area where noise easily gen- area where it is very humid or the to direct sunlight or is near a heat erates. vibration is large. source.
AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS 3-1, Asahi, Nishibiwajima-cho, Kiyosu, Aichi, 452-8561, Japan MITSUBISHI HEAVY INDUSTRIES EUROPE, LTD. AIR-CONDITIONER DIVISION 3rd Floor Thavies Inn House 3-4 Holborn Circus London EC1N 2HA, ENGLAND Phone: 44(0)20 7842 8171 Fax: 44(0)20 7842 8104 MITSUBISHI HEAVY INDUSTRIES AUSTRALIA, PTY.LTD.
