Panasonic U-5MX3XPQ Operation Manual

Contents

operation manual

Operation manual4 U-5~48MX3 + U-8~48ME3XPQUrban Multi air conditioner4PW16236-1Explanation of heating operationDefrost operation■ In heating operation, freezing of the outdoor unit coil increases.Heating capability decreases and the system goes into defrostoperation.■ The indoor unit fan stops and the remote controller displays.■ After maximum 10 minutes of defrost operation, the systemreturns to heating operation again.Hot start■ In order to prevent cold air from blowing out of an indoor unit atthe start of heating operation, the indoor fan is automaticallystopped. The display of the remote controller shows .6.2. Program dry operation■ The function of this program is to decrease the humidity in yourroom with a minimum temperature decrease.■ The micro computer automatically determines temperature andfan speed.■ The system does not go into operation if the room temperatureis low.For systems with cool/heat changeover remote control switch(See figure 5)Select cooling operation mode with the cool/heat changeoverremote control switch.Press the operation mode selector button several times andselect (program dry operation).Press the on/off button.The operation lamp lights up and the system starts operation.Press the air flow direction adjust button (only forS-20~125LM3, S-20~125UM3, S-32~100TM3JPR,S-25~63DM3HPS, S-20~63KM3HPR). Refer to "6.3. Adjustingthe air flow direction" on page 4 for details.Stopping the systemPress the on/off button once again.The operation lamp goes off and the system stops operation.6.3. Adjusting the air flow directionRefer to the operation manual of the remote controller.Movement of the air flow flap (See figure 10)For the following conditions, a micro computer controls the air flowdirection which may be different from the display.The air flow direction can be adjusted in one of the following ways.■ The air flow flap itself adjusts its position.■ The air flow direction can be fixed by the user.■ Automatic “ ” and desired position “ ”.6.4. Setting the master remote controller (for MX3and ME3 series) (See figure 7)When the system is installed as shown in figure 11 and figure 12, it isnecessary to designate one of the remote controllers as the masterremote controller.For MX3 series (See figure 11)When one outdoor unit is connected with several indoor units.For ME3 series (See figure 12)When one HR unit is connected with several indoor units.■ Only the master remote controller can select heating, cooling orautomatic (only ME3 series) operation.■ The displays of slave remote controllers show (change-over under centralized control) and they automatically follow theoperation mode directed by the master remote 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 controllerPress 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 unitflash.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).NOTE Do not turn off power immediately after the unit stops,but wait for at least 5 minutes.12345COOLING HEATING—• When starting operation.• When the room temperature is lowerthan the set temperature.• At defrost operation.• When operating continuously at horizontal air flow direction.• When continuous operation with downward air flow is performed at the time of cooling with aceiling-suspended or a wall-mounted unit, the microcomputer may control the flow direction,and then the remote control indication also will change.NOTE ■ The movable limit of the flap is changeable.Contact your dealer for details. (Only for Double-flow, Multi-flow, Corner, Ceiling-suspended andWall-mounted.)■ Avoid operating in the horizontal direction“ ”. It may cause dew or dust to settle on theceiling.12