Daikin FHQ18PVJU Installation Manual

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Contents

Daikin FHQ18PVJU Installation Manual Manual pdf 13 page image

13English2 remote controllers control11-2(Controlling 1 indoor unit by 2 remote controllers)When using 2 remote controllers, one must be set to “MAIN”•and the other to “SUB”.MAIN/SUB CHANGEOVER(1) Insert a screw driver into the recess between the up-per and lower part of remote controller and, working fromthe 2 positions, pry off the upper part.The remote controller PC board is attached to the upperpart of remote controller. (Refer to Fig. 30)(2) Turn the MAIN/SUB changeover switch on one of the 2remote controllers PC boards to “S”. (Leave the switch ofthe other remote controllers set to “M”.) (Refer to Fig. 31)Upper part ofremote controllerLower part ofremote controllerInsert the screw driverhere and gently workoff the upper part ofremote controller. Fig. 30SMSSMRemote controllerPC board(Factory setting)Only 1 remotecontroller needsto be changed iffactory settingshave remaineduntouched. Fig. 31Wiring Method(See “8. ELECTRIC WIRING WORK” and “9. WIRING EXAM-PLE AND HOW TO SET THE REMOTE CONTROLLER” onpage from 10 to 12.)(3) Remove the control box lid.(4) Add 2nd remote controller to the transmission terminalblock (P1, P2) in the control box. (There is no polarity.)(Refer to Fig. 28 on page 11 and Table 4 on page 11)COMPUTERISED CONTROL11-3(FORCED OFF AND ON/OFF OPERATION)See “FIELD SETTING” on page 12 for local settings.(1) Wire specifi cations and how to perform wiringConnect the input from outside to terminals T1 and T2 ofthe transmission terminal block.F2 T1 T2FORCEDOFFInput AWire specifi cation Sheathed vinyl wire or cable (2 wires)Gauge AWG 18-16Length Max. 328 ft.External terminal Contact that can ensure the minimum appli-cable load of 15 V DC, 10 mA.(2) ActuationThe following table explains FORCED OFF and ON/OFF•OPERATIONS in response to Input A.FORCED OFF ON/OFF OPERATIONInput “ON” stops operation (impossible byremote controllers.)Input OFF → ON turnsON unit.Input OFF enables control by remote con-troller.Input ON → OFF turnsOFF unit.(3) How to select FORCED OFF and ON/OFF OPERATIONTurn the power on and then use the remote controller to•select operation.CENTRALIZED CONTROL11-4For centralized control, it is necessary to designate the group•No. For details, refer to the manual of each optional control-lers for centralized control.TEST OPERATION12.Refer to the section of “FOR THE FOLLOWING ITEMS,TAKE SPECIAL CARE DURING CONSTRUCTION ANDCHECK AFTER INSTALLATION IS FINISHED.” on page 4.Make sure if the service lids are closed on the indoor and out-•door units.After fi nishing the construction of refrigerant pipe, drain pipe•and electric wire, conduct the check operation referring to theinstallation manual of the outdoor unit.The operation lamp of the remote controller will flash when a•malfunction occurs. Check the malfunction code on the liquidcrystal display to identify the point of trouble. An explanationof malfunction codes and the corresponding trouble is pro-vided in the installation manual of the outdoor unit.It any of the items in Table 6 are displayed, there may be aproblem with the wiring or power, so check the wiring again.Table 6Remote control display Content“ ” (undercentralized control) is lit upThere is a short circuit at the•FORCED OFF terminals (T1, T2)“U4” is lit up“UF” is lit upThe power on the outdoor unit is off.•The outdoor unit has not been wired•for power supply.Incorrect wiring for the transmission•wiring and / or FORCED OFF wiring.The transmission wiring is cut.•No displayThe power on the indoor unit is off.•The indoor unit has not been wired•for power supply.Incorrect wiring for the remote con-•troller wiring, the transmission wiringand / or the FORCED OFF wiring.The remote controller wiring is cut.•If “U3” is lit up, the malfunction code shows the check opera-•tion has not been performed yet.HOW TO DIAGNOSE FOR MALFUNCTION12-1With the power on, it is possible to monitor the type of mal-function by looking at the malfunction code displayed inthe remote controller.