Panasonic U10ME4 Operation Manual

U-5~18MX4 + U-8~16ME4✽M + U-8~16ME4 + U-4~6ML5Urban Multi air conditioner4PW40727-1AOperation manual57.4. Setting the master remote controllerWhen the system is installed as shown in figure 9 (MX4 + ML5 – theoutdoor unit is connected to several indoor units) and figure 10(ME4 – one HR unit is connected to several indoor units), it isnecessary to designate one of the remote controllers as the masterremote controller.■ Only the master remote controller can select heating or coolingand in case of ME4 units, automatic operation.■ The displays of slave remote controllers show (change-over under centralized control) and slave remote controllersautomatically follow the operation mode directed by the masterremote controller.However, it is possible to changeover to program dry with slaveremote controllers if the system is in cooling operation set by themaster remote controller.How to designate the master remote controller1 Press the operation mode selector button of the current masterremote controller for 4 seconds.The display showing (change-over under centralizedcontrol) of all slave remote controllers connected to the sameoutdoor unit or HR unit flash.2 Press the operation mode selector button of the controller thatyou wish to designate as the master remote controller. Thendesignation is completed. This remote controller is designatedas the master remote controller and the display showing(change-over under centralized control) vanishes.The displays of other remote controllers show (change-over under centralized control).7.5. Precautions for group control system or tworemote controller control systemThis system provides two other control systems beside individualcontrol (one remote controller controls one indoor unit) system.Confirm the following if your unit is of the following control systemtype.■ Group control systemOne remote controller controls up to 16 indoor units. All indoorunits are equally set.■ Two remote controller control systemTwo remote controllers control one indoor unit (in case of groupcontrol system, one group of indoor units). The unit isindividually operated.8. ENERGY SAVING AND OPTIMUMOPERATIONObserve the following precautions to ensure the system operatesproperly.■ Adjust the air outlet properly and avoid direct air flow to roominhabitants.■ Adjust the room temperature properly for a comfortableenvironment. Avoid excessive heating or cooling.■ Prevent direct sunlight from entering a room during coolingoperation by using curtains or blinds.■ Ventilate often.Extended use requires special attention to ventilation.■ Keep doors and windows closed. If the doors and windowsremain open, air will flow out of your room causing a decrease inthe cooling or heating effect.■ Be careful not to cool or heat too much. To save energy, keepthe temperature setting at a moderate level.■ Never place objects near the air inlet or the air outlet of the unit.It may cause deterioration in the effect or stop the operation.■ Turn off the main power supply switch to the unit when the unit isnot used for longer periods of time. If the switch is on, it useselectricity. Before restarting the unit, turn on the main powersupply switch 6 hours before operation to ensure smoothrunning. (Refer to "Maintenance" in the indoor unit manual.)■ When the display shows (time to clean the air filter), ask aqualified service person to clean the filters. (Refer to"Maintenance" in the indoor unit manual.)■ Keep the indoor unit and remote control at least 1 m away fromtelevisions, radios, stereos, and other similar equipment.Failing to do so may cause static or distorted pictures.■ Do not place items under the indoor unit which may be damagedby water.Condensation may form if the humidity is above 80% or if thedrain outlet gets blocked.9. MAINTENANCE9.1. Maintenance after a long stop period (e.g. at thebeginning of the season)■ Check and remove everything that might be blocking inlet andoutlet vents of indoor units and outdoor units.■ Clean air filters and casings of indoor units. Refer to theoperation manual supplied with the indoor units for details onhow to proceed and make sure to install cleaned air filters backin the same position.■ Turn on the power at least 6 hours before operating the unit inorder to ensure smoother operation. As soon as the power isturned on, the remote controller displays appear.NOTE Contact your dealer in case of changing thecombination or setting of group control and two remotecontroller control systems.Recommended temperature settingFor cooling 26~28°CFor heating 20~24°CPay attention to the fan.It is dangerous to inspect the unit while the fan is running.Be sure to turn off the main switch and to remove the fusesfrom the control circuit located in the outdoor unit.