Daikin FXHQ12MVJU Installation Manual

Also see for FXHQ12MVJU: Serivce manual Serveice manual Service manual Engineeiring data Operation manual

Contents

Daikin FXHQ12MVJU Installation Manual Manual pdf 14 page image

14(2) Actuation• The following table explains FORCED OFF and ON/OFFOPERATIONS in response to Input A.(3) How to select FORCED OFF and ON/OFF OPERATION• Turn the power on and then use the remote controller toselect operation.11-4 CENTRALIZED CONTROL• For centralized control, it is necessary to designate the groupNo. For details, refer to the manual of each optional control-lers for centralized control.• Set the remote controller to the FIELD SET MODE. Fordetails, refer to the “HOW TO SET IN THE FIELD”, in theremote controller manual.• When in the FIELD SET MODE, select mode No. 12, then setthe FIRST CODE NO. to “1”. Then set SECOND CODE NO.to “01” for FORCED OFF and “02” for ON/OFF OPERATION.(FORCED OFF at factory set)12. TEST OPERATIONRefer 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 finishing the construction of refrigerant pipe, drain pipeand electric wire, conduct the check operation referring to theinstallation manual of the outdoor unit.• The operation lamp of the remote controller will flash when amalfunction 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 6• If “U3” is lit up, the malfunction code shows the check opera-tion has not been performed yet.12-1 HOW TO DIAGNOSE FOR MALFUNCTIONWith the power on, it is possible to monitor the type of mal-function by looking at the malfunction code displayed inthe remote controller.If nothing is displayed in the remote controller, check the follow-ing items before attempting a diagnosis based on the malfunc-tion code, as they might be a cause.• Disconnected or incorrect wiring (between power supply andthe outdoor unit, between the outdoor and indoor units, andbetween the indoor unit and the remote controller)• Burnt out indoor or outdoor unit fuse• “ ” will be displayed for a few seconds on the remotecontroller immediately after the power is turned on.This display indicates that the remote controller is beingchecked to see whether it is ok or not, and does not indicatea malfunction.Diagnose with the display on the liquid crystal displayremote controller.1. With the wired remote controller. (NOTE 1)When the operation stops due to trouble, operation lampflashed, and “ ” and the malfunction code are indicated inthe liquid crystal display. In such a case, diagnose the faultcontents by referning to the table on the malfunction code listit case of group control, the unit No. is displayed so that theindoor unit No. with the trouble can be recognizde. (NOTE 2).2. With the wireless remote controller.(Refer also to the operation manual attached to the wirelessremote controller)When the operation stops due to trouble. the display on theindoor unit flashes. In such a case, diagnose the fault con-tents with the table on the malfunction code list looking forthe malfunction code which can be found by following pro-cedures. (NOTE 2)(1) Press the INSPECTION /TEST OPERATION button,“ ” is displayed and “ 0 ” flashes.(2) Press the PROGRAMMING TIME button and find theunit No. which stopped due to trouble.Number of beeps3 short beeps Perform all the followingoperations1 short beep Perform (3) and (6)1 long beep No troubleWire specification 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.FORCED OFF ON/OFF OPERA-TIONInput “ON” stops operation(impossible by remote controllers.)Input OFF → ONturns ON unit.Input OFF enables control by remote controller. Input ON → OFFturns OFF unit.SETTINGModeNo.SECONDCORD NO.FIRSTCORD NO. FIELD SETMODERemote control display Content“ ” (under cen-tralized control) is lit up• There is a short circuit at theFORCED OFF terminals (T1, T2).“U4” is lit up“UF” is lit up• The power on the outdoor unit is off.• The outdoor unit has not been wiredfor power supply.• Incorrect wiring for the transmissionwiring and / or FORCED OFF wiring.• The transmission wiring is cut.No display• The power on the indoor unit is off.• The indoor unit has not been wiredfor power supply.• Incorrect wiring for the remote con-troller wiring, the transmission wiringand / or the FORCED OFF wiring.• The remote controller wiring is cut.

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