English 149-1 Power on and check operation• Make sure to perform the check operation after installation. (If the airconditioner is operated using the indoor remote controller withoutperforming the check operation, the malfunction code “U3” is dis-played in the indoor remote controller, and normal operation is dis-abled.)• In the check operation, the status of the outdoor unit is checked, andincorrect wiring is checked for.• If the air conditioner is started within about 12 minutes after thepower of the indoor/outdoor unit is turned on, the H2P indicator lightsand the compressor does not run.Confirm that the LED status is as shown in the table in (2) in“9-1 Power on and check operation” before starting the air condi-tioner.• The air conditioner may require about 10 minutes maximum until itcan start the compressor after start of operation.This period of time is required to homogenize the refrigerant status,and does not indicate any failure.• The check operation does not provide any means of checking theindoor unit individually. For that purpose, perform the normal oper-ation using the remote controller after finishing the check operation.• The check operation is not available in any other mode such as therecovery mode.• Before running a check on the unit, changing the indoor remote con-troller settings might cause the error code “UF” to be displayed andprevent a proper check to be run.9-2 Checks in normal operation• After finishing the check operation, operate the air conditioner nor-mally. (Heating operation is only available for RZQ-P models.)(Heating is not available if the outside air temperature is 75 °F ormore. Refer to the operation manual supplied together with theunit.)• Confirm that the indoor and outdoor units are operating normally.(If a knocking sound is heard in the liquid compression of the com-pressor, stop the air conditioner immediately and energize the crank-case heater for a sufficient period of time, then start the operationagain.)• Run the indoor unit one by one in turn, and confirm that the corre-sponding outdoor unit is running.• Check to see if cold (or hot) air is coming out of the indoor unit.• Press the fan direction button and fan speed control button on theremote controller to see if the fan is operating normally.• Once stopped, the compressor will not start for about 5 minutes evenif the “ON/OFF” button on the remote controller is pressed.• When the system operation is stopped by the remote control, theoutdoor unit may continue to operate for a further 3 minutes.• If the system has not undergone the check operation by the test runbutton since it was first installed, a malfunction code “U3” is dis-played.In this case, perform the check operation by referring to “9-1 Poweron and check operation”.Make sure to turnon the power 6 hoursbefore starting operationfor supplying the powerto the crankcase heater.CautionOutdoorunit installedH1PH5PH4PH6PH7PH2PH3PHAPBlinkingONOFFLED display:LED display(Defaultstatusbeforedelivery)Do not leave any stopvalve closed.Otherwise the compressorwill fail.SERVICE MONITORMODEINDSLAVEMASTERTEST/HWLL.N.O.P.DEMAND• Close the front panelof the outdoor unit.• Turn ON the powerto the outdoor unitand indoor unit.(1)(2) • Open the front panel of the outdoor unit.• Check the LED on the PC board (A1Pand A2P) in the outdoor unit to see if thedata transmission is performed normally.(3)(4) Confirm that the stopvalves are open on both theliquid and gas lines. If theyare closed, open them.(5)(6) After the check operation, make sure to close the frontpanel of the outdoor unit.CautionThe power issupplied to theoutdoor unit.Take due careduring the workto preventelectric shock.• When performing thelow-noise operation(L.N.O.P.) or demand(DEMAND) operationupon request from thecustomer, perform thesetting using thepushbutton switches(BS1 to BS5) on thePC board (A2P) in theoutdoor unit.• Press eachpushbutton switchfrom the opening ofthe insulation cover.(Do not remove theinsulation cover.)• The power is supplied to the outdoorunit. Take due care during the work toprevent electric shock.• Before using the pushbutton switches(BS1 to BS5) for setting, confirm thatthe microcomputer (SERVICE) monitoris lit.• For the setting method, refer to the[Cautions on service] label attached onthe back of the front panel of theoutdoor unit. (Make sure to write thecontents of setting on the [Cautions onservice] label.)Press and hold the test runbutton (BS4) for 5 seconds ormore to start the checkoperation.For the details, refer to theC heck operation procedureon the [Cautions on service]label .• When leaving the outdoor unit during thecheck operation for unavoidable reasons,ask another installation worker to watch theoutdoor unit, or close the front panel.• The system operates the check operationfor about 15 minutes (30 minutesmaximum), then stops automatically.The system can start normal operationabout 5 minutes after the check operation ifthe remote controller does not display anymalfunction code.• During the check operation, the statusunder execution is indicated on the remotecontroller.A2PA1P
