Daikin VRV IV+ RXYTQ8U5YF Installer And User Manual

Also see for VRV IV+ RXYTQ10U7YF: Installer and user reference guide Installation and operation manual

19 | ConfigurationInstaller and user reference guide103RXYTQVRV IV+ heat pump for high ambient temperatures4P561157-1B – 2021.11OnIn 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 "19.2.4 To accessmode 1 or 2" [4102].19.2.5 To use mode 1Mode 1 is used to set basic settings and to monitor the status of the unit.What HowChanging and accessing thesetting in mode 1Once mode 1 is selected (push BS1 one time),you can select the wanted setting. It is done bypushing BS2.Accessing the selected setting's value is done bypushing BS3 one time.To quit and return to the initialstatusPress BS1.Example:Checking the content of parameter [1‑10] (to know how many indoor units areconnected to the system).[A‑B]=C in this case defined as: A=1; B=10; C=the value we want to know/monitor:1 Make sure the 7‑segment display indication is in the default situation (normaloperation).2 Push BS1 one time.Result: Mode 1 is accessed: