Daikin RZQG71L8V1B Installation Manual

Daikin RZQG71L8V1B Installation Manual Manual pdf 22 page image

Installation manual19 RZQG71~140L + RZQSG100~140LSplit system air conditioners4P339538-1A – 2014.0315.4. Precautions regarding test-runs1 In order to detect stop valves failing to open, operation of theunit is compulsorily performed in cooling for 2-3 minutes duringthe first test run, even if the remote controller was set to heatingoperation. In this case, the remote controller will have keptdisplaying the heating symbol all the time and the unit will switchto heating operation automatically after elapse of that time.2 In case you cannot operate the unit in test run mode for anyunusual reason, refer to "15.5. Failure diagnosis at the moment of firstinstallation" on page 19.3 In case of a wireless remote controller, execute the test run onlyafter having installed the indoor unit decoration panel with infra-red receiver first.4 In case the panels of indoor units are not yet installed to theindoor units, make sure to shut off the power supply afterfinishing the complete test run.5 A complete test run surely includes shutting off power afterhaving performed a normal operation stop on the remotecontroller. Do not stop operation by turning circuit breakers off.15.5. Failure diagnosis at the moment of firstinstallation If the malfunction code "UA" is displayed on the remotecontroller, there is a possibility that connection is withincompatible indoor unit. In case nothing is displayed on the remote controller (thecurrently set temperature does not display), check for any of thefollowing abnormalities before you can diagnose possiblemalfunction codes. Disconnection or wiring error (between power supply andoutdoor unit, between outdoor unit and indoor units, betweenindoor unit and remote controller). The fuse on the outdoor unit PCB may have run out. If the malfunction code "E3", "E4", "L8" or "U0" is displayed on theremote controller, there is a possibility that the stop valves areclosed. If the malfunction code "E3", "E4", "L4" or "L8" is displayed on theremote controller, there is a possibility that air inlet or air outletare blocked. If the malfunction code "U2" is displayed on the remotecontroller, check for voltage imbalance. If the malfunction code "U4" or "UF" is displayed on the remotecontroller, check the inter-unit branch wiring connection. The reversed phase protection detector of this product onlyworks during the initialisation stage after a power reset.The reversed phase protection detector is designed to stop theproduct in case of an abnormality when the product is started up. When the reversed phase protection circuit forced the unit tostop, check if all phases are existing. If this is the case, shutoff the power supply to the unit and replace two of threephases. Turn on power again and start the unit. Reversed phase detection is not performed while the productis operating. In case of possible reversal of phases after a momentaryblack out of power and the power goes on and off while theproduct is operating, install a reversed phase protectioncircuit on site. Such situation is not unimaginable when usinggenerators. Running the product in reversed phase canbreak the compressor and other parts. For a missing phase in case of Y1 units, "E7" or "U2" will bedisplayed on the remote controller of the indoor unit.Operation will be impossible with either one of thesephenomena. If this happens, turn off the power, re-check thewiring and switch the position of two of the three electrical wires.(If operation is not possible, do not under any circumstancesforce the electromagnetic contactor on.)8 Press the Fan speed/airflow direction button.Press the Fan speed/airflowdirectionbutton.The main menu screen is displayed9 Select airflow direction setting by pressing the ► (right) buttonon the setting screen.Use the ▲(up) ▼(down) buttons to change the airflow direction.To select airflow direction setting, pressthe ► (right) button on the setting screen.10 After the operation of airflow direction is confirmed, press theMenu/Enter button.Change the airflow direction using the▲(up) and ▼(down) buttons.Press the Menu/Enter button.The Basic screen returns.11 Press and hold the Cancel button for 4 seconds or longer in theBasic screen.Press and hold the Cancel button for 4seconds or longer during backlight lit.The Service Settings menu is displayed.12 Select Test operation in the Service Settings menu and pressthe Menu/Enter button.Press the Menu/Enter button.The Basic screen returns and normal operation is conducted.Return SettingReturn SettingAir Volume/directionAir Volume DirectionPosition 0LowReturn SettingReturn SettingAir Volume/directionAir Volume DirectionLow Position 0CoolReturn SettingTest OperationReturn SettingService Settings 1/3Test OperationMaintenance ContactField SettingsDemandMin Setpoints DifferentialGroup Address

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