Vermont Casting MSZ-D36NA, MSZ-D30NA, MSY-D36NA, MSY-D30NA service manual Vertical vane, 3 4 Swing 5

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2. Vertical vane

(1) Vane motor drive

These models are equipped with a stepping motor for the vertical vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approx. 12 V) transmitted from microprocessor.

(2) The vertical vane angle and mode change as follows by pressing WIDE VANE button.

1 2 34 SWING 5 6

(3)Positioning

The vane is once pressed to the vane stopper to confirm the standard position and then set to the desired angle. Confirming of standard position is performed in the following cases.

(a)OPERATE/STOP (ON/OFF) button is pressed (POWER ON/OFF).

(b)SWING is started or finished.

(c)The power supply turns ON.

(4)SWING MODE ( )

By selecting SWING mode with WIDE VANE button, the vertical vane swings horizontally. The remote controller displays “”.

(5)WIDE MODE ( )

By selecting WIDE mode with WIDE VANE button, indoor fan speed becomes faster than setting fan speed on the remote controller (). The remote controller displays “”.

NOTE : The position of vane angle 3, angle 4 and angle 5 are different in COOL operation and HEAT operation.

Indoor fan speed becomes faster than setting fan speed on the remote controller even when or is select- ed.

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Contents MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA Page Technical Changes Accessories Part Names and FunctionsSpecification Operating Range Outlet AIR Speed and Coverage RangeOutlines and Dimensions MSZ-D36NA MSY-D30NA MSY-D36NAWiring Diagram Refrigerant System Diagram UnitinchService Functions Timer Short ModeHow to modify the remote controller P.C. board P.C. Board Modification for Individual OperationAuto Restart Function OperationOperation Indicator lamp Microprocessor ControlCool Operation Heat Operation MSZFAN Operation MSY Feel Control Operation MSYMode selection Auto Change Over ··· Auto Mode Operation MSZFuzzy control Auto Vane Operation Vertical vane 3 4 Swing 5Program Timer Changing Temperature Indication F /C Minute Time Delay OperationEMERGENCY/TEST Operation Troubleshooting Before troubleshooting, check the followingTroubleshooting procedure How to replace batteriesFailure Mode Recall Function OFFIndoor unit failure mode table Eration IndicaInstruction of Troubleshooting StartTroubleshooting Check Table Lighted Blinking Not lightedTrouble Criterion of Main Parts Troubleshooting Flow Check of indoor fan motorCheck of remote controller and receiver P.C. board Indoor electronic control P.C. board How to check miswiring and serial signal error Electromagnetic noise enters into TV sets or radios Power monitor receiver P.C. board Test Point Diagram and VoltageSW P.C. board Disassembly Instructions Board, the power monitor receiver P.C. board and the SWRemoving the panel Removing the electrical box, the electronic control P.CRemoving the vertical vane motor Removing the nozzle assemblyRemoving the horizontal vane motor Removing the line flow fan and the indoor fan motor Page Page Distributed in Feb . No. OBH501 New publication, effective FebMade in Japan