Daikin VRV IV Q+ Series Installer And User Reference Manual

Also see for RXYQQ10U7Y1B: Installation and operation manual

20 | ConfigurationInstaller and user reference guide122RXYQQ8~20U7Y1BVRV IV Q+ series heat pump4P546229-1A – 2020.1020.2.4 To access mode 1 or 2Initialisation: default situationNOTICEBe sure to turn ON the power 6 hours before operation in order to have powerrunning to the crankcase heater and to protect the compressor.Turn on the power supply of the outdoor unit and all indoor units. When thecommunication between indoor units and outdoor unit(s) is established andnormal, the 7‑segment display indication state will be as below (default situationwhen shipped from factory).Stage DisplayWhen turning on the power supply: flashing as indicated.First checks on power supply are executed (1~2 min).When no trouble occurs: lighted as indicated (8~10 min).Ready for operation: blank display indication asindicated.7‑segment display indications:OffBlinkingOnIn case of malfunction, the malfunction code is displayed on the indoor unit userinterface and the outdoor unit 7‑segment display. Solve the malfunction codeaccordingly. The communication wiring should be checked at first.AccessBS1 is used to switch between the default situation, mode 1 and mode 2.Access ActionDefault situationMode 1 Push BS1 one time.7‑segment display indication changes to:.Push BS1 one more time to return to the defaultsituation.Mode 2 Push BS1 for at least 5 seconds.7‑segment display indication changes to:Push BS1 one more time (shortly) to return to thedefault situation.INFORMATIONIf you get confused in the middle of the process, push BS1 to return to the defaultsituation (no indication on 7‑segment displays: blank, refer to "To access mode 1 or2" [4122].