Panasonic U10ME4 Operation Manual

Operation manual4 U-5~18MX4 + U-8~16ME4✽M + U-8~16ME4 + U-4~6ML5Urban Multi air conditioner4PW40727-1AExplanation of heating operationIt may take longer to reach the set temperature for general heatingoperation than for cooling operation.The following operation is performed in order to prevent the heatingcapacity from dropping or cold air from blowing.Defrost 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 .It may take some time before the fan starts. This is not amalfunction.7.2. Program dry operation■ The function of this program is to decrease the humidity in yourroom with minimal temperature decrease (minimal roomcooling).■ The micro computer automatically determines temperature andfan speed (cannot be set by the remote controller).■ The system does not go into operation if the room temperatureis low (<20°C).For systems without cool/heat changeover remote controlswitch (See figure 5)1 Press the operation mode selector button several times andselect (program dry operation).2 Press the on/off button.The operation lamp lights up and the system starts operation.3 Press the air flow direction adjust button. (Only for Double-flow,Multi-flow, Corner, Ceiling-suspended and Wall-mounted.) Referto "7.3. Adjusting the air flow direction" on page 4 for details.Stopping the system4 Press the on/off button once again.The operation lamp goes off and the system stops operation.For systems with cool/heat changeover remote control switch(See figure 6)1 Select cooling operation mode with the cool/heat changeoverremote control switch.2 Press the operation mode selector button several times andselect (program dry operation).3 Press the on/off button.The operation lamp lights up and the system starts operation.4 Press the air flow direction adjust button. (Only for Double-flow,Multi-flow, Corner, Ceiling-suspended and Wall-mounted.) Referto "7.3. Adjusting the air flow direction" on page 4 for details.Stopping the system5 Press the on/off button once again.The operation lamp goes off and the system stops operation.7.3. Adjusting the air flow directionRefer to the operation manual of the remote controller.Movement of the air flow flap (See figure 8)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 " ".NOTE ■ The heating capacity drops when the outsidetemperature falls. If this happens, use anotherheating device together with the unit. (When usingtogether with appliances that produce open fire,ventilate the room constantly.)Do not place appliances that produce open fire inplaces exposed to the air flow from the unit orunder the unit.■ It takes some time to heat up the room from thetime the unit is started since the unit uses a hot-aircirculating system to heat the entire room.■ If the hot air rises to the ceiling, leaving the areaabove the floor cold, we recommend that you usethe circulator (the indoor fan for circulating air).Contact your dealer for details.NOTE Do not turn off power immediately after the unit stops,but wait for at least 5 minutes.NOTE Do not turn off power immediately after the unit stops,but wait for at least 5 minutes.A Double-flow + Multi-flow unitsB Corner unitsC Ceiling-suspended unitsD Wall-mounted unitsCOOLING HEATING• When the room temperature is lower thanthe set temperature.• When starting operation.• When the room temperature is higher thanthe 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.