Daikin 4MXS80E3V3B2 Installation Manual

Contents

Daikin 4MXS80E3V3B2 Installation Manual Manual pdf 14 page image

Installation manual11Example of correction of wiring errorIn case that the wiring error check was not interrupted, the LEDlighting sequence after the automatic wiring correction in thisexample is 2→1→3→4→5.Test run and final check To test cooling, set for the lowest temperature. To test heating,set for the highest temperature. (Depending on the roomtemperature, only heating or cooling (but not both) may bepossible.) After the unit is stopped, it will not start again (heating or cooling)for approximately 3 minutes. During the test run, first check the operation of each unitindividually. Then also check the simultaneous operation of allindoor units.Check both heating and cooling operation. After running the unit for approximately 20 minutes, measure thetemperatures at the indoor unit inlet and outlet. If themeasurements are above the values shown in the table below,then they are normal. During cooling operation, frost may form on the gas stop valveor other parts. This is normal. Operate the indoor units in accordance with the includedoperation manual. Check that they operate normally.Items to checkDisposal requirementsDismantling of the unit, treatment of the refrigerant, of oil and of otherparts must be done in accordance with relevant local and nationallegislation.Piping connection between outdoor unit and indoor unit (fromport A, B, ... on the outdoor unit to indoor unit A, B, ...)Wiring connection from the outdoor unit terminal board to theindoor units.NOTE 1 For 2 rooms, LED 3, 4 and 5 do not light up, andfor 3 rooms, LED 4 and 5 do not light up. For 4rooms, LED 5 does not light up.2 If the outside air temperature is ≤5°C, the wiringerror check function will not operate.3 After wiring error check operation is completed,LED indication will continue until ordinaryoperation starts. This is normal.4 Follow procedures as mentioned on the servicesticker on the rear side of the service cover.Cooling HeatingTemperature difference betweeninlet and outlet ±8°C ±20°CABCDEABCDECheck Symptom Are the indoor units installedsecurely?Falling, vibration, noise. Has an inspection been made tocheck for gas leakage?No cooling, no heating. Has complete thermal insulationbeen done (gas pipes, liquidpipes, indoor portions of the drainhose extension)?Water leakage. Is the drainage secure? Water leakage. Are the earth wire connectionssecure?Danger in case of an earthingfault. Are the electric wires connectedcorrectly?No cooling, no heating. Is the wiring in accordance withthe specifications?Operation failure, burning. Are the inlets/outlets of the indoorand outdoor units free of anyobstructions?Are the stop valves open?No cooling, no heating. Do the marks match (room A,room B) on the wiring and pipingfor each indoor unit?No cooling, no heating. Is the priority-room setting set for2 or more rooms?The priority-room setting will notfunction.ATTENTION Have the customer actually operate the unit whilelooking at the manual included with the indoor unit.Instruct the customer how to operate the unit correctly(particularly cleaning of the air filters, operationprocedures, and temperature adjustment). Even when the air conditioner is not operating, itconsumes some electric power. If the customer is notgoing to use the unit soon after it is installed, turn OFFthe breaker to avoid wasting electricity.

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