Panasonic U-5MX3XPQ Operation Manual

Contents

operation manual

U-5~48MX3 + U-8~48ME3XPQUrban Multi air conditioner4PW16236-1Operation manual56.5. 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.7. OPTIMUM OPERATIONObserve 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 comfortable environ-ment. 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.■ 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.8. FOLLOWING SYMPTOMS ARE NOT AIRCONDITIONER TROUBLESSymptom 1: The system does not operate■ The air conditioner does not start immediately after the ON/OFFbutton on the remote controller is pushed.If the operation lamp lights, the system is in normal condition.To prevent overloading of the compressor motor, the airconditioner starts 5 minutes after it is turned ON again in case itwas turned OFF just before. The same starting delay occursafter the operation mode selector button was used.■ If “Centralized Control” is displayed on the remote control andpressing the operation button causes the display to blink for afew seconds.This indicates that the central device is controlling the unit.The blinking display indicates that the remote control cannot beused.■ The system does not start immediately after the power supply isturned on.Wait one minute until the micro computer is prepared foroperation.Symptom 2: Cool/Heat cannot be changed over■ When the display shows “ ” (change-over undercentralized control), it shows that this is a slave remotecontroller.■ When the cool/heat changeover remote control switch isinstalled and the display shows “ ” (change-over undercentralized control).This is because cool/heat changeover is controlled by the cool/heat changeover remote control switch. Ask your dealer wherethe remote control switch is installed.Symptom 3: Fan operation is possible, but cooling and heating do notwork.■ Immediately after the power is turned on.The micro computer is getting ready to operate. Wait 10minutes.Symptom 4: The fan strength does not correspond to the setting.■ The fan strength does no change even if the fan strengthadjustment button in pressed.During heating operation, when the room temperature reachesthe set temperature, the outdoor unit goes off and the indoor unitchanges to whisper fan strength.This is to prevent cold air blowing directly on occupants of theroom.The fan strength will not change even if the button is changed,when another indoor unit is in heating operation.Symptom 5: The fan direction does not correspond to the setting■ The fan direction does not correspond to the remote controldisplay. The fan direction does not swing.This is because the unit is being controlled by the microcomputer.NOTE Contact your dealer in case of changing thecombination or setting of group control and two remotecontroller control systems.

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