Daikin REYQ72PAYD Installation Manual

Contents

Daikin REYQ72PAYD Installation Manual Manual pdf 20 page image

16 English6. After completing the additional refrigerant charging, record the chargingamount on the accessory “REQUEST FOR THE INDICATON” label(Installation records) and adhere it to the back side of the front panel.11-2-2 Procedure of check operation• Check operation perform the following work. Do the check operationfollowing below.Otherwise, malfunction code “U3” will be displayed in the remotecontroller and nomal operation can not be carried out. Check of shutoff valve opening Check of miswiring Judgment of piping length Check of refrigerant overchargeNOTE• Check operation can not carried out at outdoor temp. less than 23°F.Perform the check operation at day or time that outdoor temp. is 23°For more.[Check Operation Procedure](1) Close the EL. COMPO. BOX lid and all front panels except as theside of the EL. COMPO. BOX and turn on the power to the outsideunit and all connected BS, indoor units. (Be sure to turn the power onat least 6 hours before operation in order to have power running tothe crank case heater.)(2) Make the onsite settings as needed using the push button (BS1-BS5) on the outside unit PC-board (A1P) with the power on. (See“12 Onsite Settings”)(3) Perform the check operation following the Check Operation Methodof the [Service Precautions] label (lower) on the EL. COMPO. BOXlid. (See figure 31) The system operation for about 40~60 minutesand automatically stops the check operation.If the malfunction code is not displayed in the remote controller afterthe system stop, check operation is completed. Normal operation willbe possible after 5 minutes. If the malfunction code is displayed in theremote controller, correct the malfunction following [Remote control-ler displays malfunction code] and perform the check operation again.(Refer to figure 31)1. EL. COMPO.BOX (1) lid2. EL. COMPO.BOX (2) lid3. [Service Precaution] label (upper)4. [Service Precaution] label (lower)NOTEFor interrupting the check operation, push RETURN button (BS3).[Remote controller displays malfunction code]NOTEIf any malfunction codes other than the above are displayed, check theservice manual for how to respond.12. ONSITE SETTINGSNOTEIn the case of a multi system, all onsite settings should be made on themaster unit. Settings made on sub units are invalid.The outside unit to which the indoor unit transmission wire are con-nected is the master unit, and all other units are sub units.Use the push button switches (BS1 through BS5) on the outside unitPC-board (A1P) to make the necessary onsite settings.See the “Service Precautions” label (upper) on the EL. CONPO. BOX lidfor details on the positions and operating method of the push buttonswitches and on the onsite setting.Make sure to record the setting on the accessory “REQUEST FOR THEINDICATION” label.WARNING Electric Shock WarningUse an insulated rod to operate the push buttons via the inspection doorof EL. COMPO. BOX lid.There is a risk of electric shock if you touch any live parts, since thisoperation must be performed with the power on.13. TEST RUN13-1 Before test run• Make sure the following works are completed in accordance with theinstallation manual. Piping work Wiring work Air tight test Vacuum drying Additional refrigerant charge Check operation• Check that all work for the BS, indoor unit are finished and there areno danger to operate.13-2 Test RunAfter all works are completed, operate the unit normally and check thefollowing.(1) Make sure the indoor and outside units are operating normally.(2) Operate each indoor unit one by one and make sure the correspond-ing outside unit is also operating.(3) Check to see if cold (or hot) air is coming out from the indoor unit.(4) Push the fan direction and strength buttons on the remote controllerto see if they operate properly.NOTE• Heating is not possible if the outdoor temperature is 75°F or higher.Refer to the Operation manual.• If a knocking sound can be heard in the liquid compression of the com-pressor, stop the unit immediately and then energize the crank caseheater for a sufficient length of time before restarting the operation.• Once stopping, the compressor will not restart in about 5 minuteseven if the On/Off button of the remote controller is pushed.• When the system operation is stopped by the remote controller, the out-side units may continue operating for further 5 minutes at maximum.• The outside unit fan may rotate at low speeds if the Night-time lownoise setting or the External low noise level setting is made, but thisis not a malfunction.Malfunc-tion code Installation error Remedial actionE3, E4F3, F6UFThe shutoff valve of the outsideunit is left closed. Open the shutoff valve.U1 The phases of the power tothe outside unit is reversed.Exchange two of the three phases (L1,L2, L3) to make a proper connection.U1U4LCNo power is supplied to anoutside, BS or indoor unit(including phase interruption).Make sure the power source wire isproperly connected to the outside, BS orindoor unit and revise if necessary.UFThere is conflict on the con-nection of transmission wir-ing in the system.Check if the refrigerant piping line andthe transmission wiring are consistentwith each other.E3F6UFRefrigerant overcharge.Recalculate the additional amount refrig-erant from the piping length and correctthe refrigerant charge level by recoveringany excessive refrigerant with a refriger-ant recovery machine.E4F3 Insufficient refrigerant.• Check if the additional refrigerantcharge has been finished correctly.• Recalculate the additional amountrefrigerant from the piping length andadd the adequate amount.U7, U4UF, UHField wiring is connected to "TOMULTI UNIT (Q1,Q2)" terminalon the outside unit PC-board(A1P) when the system is oneoutdoor system.Remove the line from the “TO MULTI UNIT(Q1, Q2)” terminal.

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