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LMVSeriesTechnicalInstructions 

DocumentNo.LV5‐1000

SCCInc. Page11 Section7

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LMV5WillNotStart(StaysinPhase12)

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1. EnsurethattheLMV5isinautomaticmodethroughthefollowingmenupath:

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ManualOperation>Autom/Manual/Off=Automatic

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2. The burner will not start if the safety loop is open.Verify that there is 120 VAC on both

terminalsX3‐03.1andX3‐04.1.

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3. Verifythatthereis120VACatburnerswitchinputterminalX5‐03.1.

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4. VerifythattheLMV5isnotinalarm.Ifso,correcttheissuecausingthealarmandresetthe

fault.

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5. Verifythatignitionpositionsaredefinedforallactivatedactuators,includingtheVSD.This

canbedonethroughthefollowingmenupath:

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Params&Display>RatioControl>Gas/OilSettings>SpecialPositions>IgnitionPos

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6. Verifythattheactualvalueoftheboilerislessthantheswitchonthresholdoftheburner

(setpoint+SD_ModOn).

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Siemens LMV5 Series Technical Instructions

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