Panasonic U-4LE1E5 Installation Instructions Manual

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Panasonic U-4LE1E5 Installation Instructions Manual Manual pdf 26 page image

257-2. Test Run ProcedureItems to Check Before the Test Run1. Turn the remote power switch on at least 5 hours before the test, in order to energize the crankcase heater.2. Turn the outdoor service valves (2 locations) to the full-open positions.● Use caution when making the settings.If there are duplicated system addresses, or if the settings for the Nos. of the indoor units are not consistent, an alarm will occurand the system will not start.● These settings are not made on the indoor unit PCB.*2 *23*3*Recheck the items to check before the test run.Set the No. of indoor units.Set the system address.Each system to be a unique number.When multiple outdoor units exist, disconnect the terminals extendedfrom the shorted plugs (CN-TERMINAL) at all outdoor main unit PCBsexcept for 1. Alternatively, move the sockets to the OPEN side.Will automatic address setting be performedin Heating mode?Is it OK to start the compressors?Is it OK to start the compressors?Turn ON the indoor andoutdoor unit power.Check the alarmcontents.Are LEDs 1 and 2 on the outdoorunit PCB OFF?Set the wired remote controller for test run.Return remote control to normal modeDoes system operate? Check and make corrections according to“Table of Self-Diagnostic Functions.”CASE 2Make necessary corrections.Turn OFF the indoor andoutdoor unit power.Check the alarm contents.Turn ON the indoor andoutdoor unit power for thatrefrigerant system only.Short-circuit the automatic address pin(CN-A.ADD) on the outdoor unit PCBfor 1 second or longer, then release it.LED 1 and 2 blink alternately(about 2 or 3 minutes).Are LEDs 1 and 2 on theoutdoor unit PCB OFF?Are the inter-unit control wiresconnected to more than 1 refrigerantsystem?Is it possible to turn ON the power onlyfor the 1 refrigerant system where thetest run will be performed?Turn ON the indoor andoutdoor unit power.Short-circuit the cooling side of themode change 3P pin (CN-MODE) onthe outdoor main unit PCB. At thesame time, short-circuit the automaticaddress pin (CN-A.ADD) for 1 secondor longer, then pull it out. *1Short-circuit the automaticaddress pin (CN-A.ADD) on theoutdoor unit PCB for 1 secondor longer, then release it. *1Start indoor and outdoor unitcooling operation. LED 1 and2 blink alternately.Start indoor and outdoor unitheating operation. LED 1and 2 blink alternately.Check that test run preparation is OK.(Do not allow the short-circuited pins to remain short-circuited.)End test run.Refer to the remotecontroller test-runsettings.Refer to Figs. 7-4, -5Unit No. setting switch(S002 and S003)(Check the link wiring.)Unit No. setting switch(S004)*1 Use a flathead screwdriver to short-circuit the pin on the PC board.*2 A minimum of 5 hours must have passed after the power was turned ON tothe outdoor unit.*3 All indoor units operate in all refrigerant systems where the power is ON.NOYESCASE 1YESNOYESNOCASE 3B CASE 3ANOYESNOTurn OFF the indoorand outdoor unitMake necessarycorrectionsYESNORefer to “Table ofSelf-Diagnostic Functionsand Description of AlarmDisplays.”YESFig. 7-3AMP Air Conditioningwww.ampair.co.uk | sales@ampair.co.uk