Daikin VRV III REMQ72PBYD Engineering Data

EDUS391004-N InstallationInstallation of Outdoor Units 63[Remote controller cooling mode malfunction code][Remote controller heating mode malfunction code]6. After completing the additional refrigerant charging, record thecharging amount on the accessory “REQUEST FOR THEINDICATION” label (Installation records) and adhere it to the backside of the front panel.11-2-2 Procedure of check operation• Check operation perform the following work. Do the checkoperation following below.Otherwise, malfunction code “U3” will be displayed in the remotecontroller and normal 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. is23°F or more.[Check Operation Procedure](1) Close the electrical components box lid and all front panels exceptas the side of the electrical components box and turn on the powerto the outdoor unit and all connected indoor units. (Be sure to turnthe power on at least 6 hours before operation in order to havepower running to the crank case heater.)(2) Make the onsite settings as needed using the push button (BS1-BS5) on the outdoor 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 electricalcomponents box lid. (See figure 32) The system operation for about40~60 minutes and automatically stops the check operation.If the malfunction code is not displayed in the remote controller afterthe system stop, check operation is completed. Normal operationwill be possible after 5 minutes. If the malfunction code is displayedin the remote controller, correct the malfunction following [Remotecontroller displays malfunction code] and perform the checkoperation again.(Refer to figure 32)1. Electrical components box (1) lid2. (Only RXYQ~PBYD and RXYQ144PBTJ)Electrical components 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, checkthe service manual for how to respond.Code The work contentsPE Charging is almost finished. Ready to close the valve A.PAPHThe refrigerant tank is empty. Close the valve A and replaceempty tank to the new tank. After changing the tank, openthe valve A again.Beware the fan running. The outdoor unit doesnot stop operation.P8 Close the valve A immediately, and restart the operationfrom procedure (3).P2Operation is interrupted. Close thevalve A immediately and check thebelow items.• Check if gas pipe or liquid pipeshutoff valve is opened.• Check the refrigerant tank is con-nected and the valve A wasopened.• Check if the air inlet and outlet ofthe indoor unit are not closed byan obstruction.After correcting theabnormality, restartthe operation fromprocedure (3).Operation is stopped abnormally.Close the valve A immediately. Con-firm the malfunction code and correctthe abnormality following the[Remote controller displays malfunc-tion code] in chapter 11-2-2.P9 Charging is finished. Close the valve A and take the refrig-erant tank off.Code The work contentsP8Close the valve A immediately and push the TEST button (BS4)once. And restart from procedure (7) of “In case of heatingmode”.P2Operation is interrupted. Close the valve A immediately andcheck the below items.• Check if gas pipe or liquid pipe shutoff valve is opened.• Check the refrigerant tank is connected and the valveA was opened.• Check if the air inlet and outlet of the indoor unit arenot closed by an obstruction.Malfunctioncode Installation error Remedial actionE3, E4F3, F6UFThe shutoff valve of theoutdoor unit is left closed. Open the shutoff valve.U1 The phases of the power tothe outdoor unit is reversed.Exchange two of the three phases (L1,L2, L3) to make a proper connection.U1U4LCNo power is supplied to anoutdoor or indoor unit(including phaseinterruption).Make sure the power source wire isproperly connected to the outdoor orindoor unit and revise if necessary.UFThere is conflict on theconnection of transmissionwiring in the system.Check if the refrigerant piping line andthe transmission wiring are consistentwith each other.E3F6UFRefrigerant overcharge.Recalculate the additional amountrefrigerant from the piping length andcorrect the refrigerant charge level byrecovering any excessive refrigerantwith a refrigerant 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"TO MULTI UNIT (Q1, Q2)"terminal on the outdoor unitPC-board (A1P) when thesystem is one outdoor system.Remove the line from the “TO MULTIUNIT (Q1, Q2)” terminal.3P215731-10R