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Error305indicateseitheranopencircuitinthepowertrainwhichmaynotresetortheenginefailedtodeliveracertainlevelofcurrent0.1Awithin60secondswhentheengine

wasconnectedtothegrid.CheckthewiringharnessandconnectionstothemainPCB,iftheproblempersistscontactthetechnicalhelpline.

SectionM

Error308indicatesanopencircuitconditioninthepowertrainwhentheengineconnectstothegridinthestopresistorcircuit.Checkthestop/startresistorvaluesfor15

Ohms.Ifopencircuitreplace,ifOKandthefaultpersists,theenginemayneedtobereplacedcontactthetechnicalhelplineforadvice.

SectionN

Error287and300impliesthattheMainPCBdidnotdisconnectastheengineheadwascoolingdown.IftheproblempersiststheMainPCBwillneedreplacing.

SectionO

Error288checkloopinmilligridconnectionacrosspins3(seeSection16.2).

Errors289to296faultconnectedwiththewatercooledthermostat/connectionsandanother.Checkthemilligridplugispushedhomeproperlyandthe6way

Molexconnectionseesection16.2and16.5(E)Performaserviceresetiftheerrorpersists.Checkthecontinuityofthewatercooledthermostatcircuitthroughthe6wayMolex

connector.Oncethewatercooledthermostaterrorhasbeenresolvedafurthererrorcodemaybedisplayed.

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18.0EngineFaultFinding

NOTE:Section18EngineFaultFindingshouldonlybecarriedoutbyServiceEngineerswhohavebeengivenspecifictraining.

SafetyPrecautions

1.TheMECV1LinearFreePistonStirlingEngineGenerator(LFPSE)isintendedsolelyforusewithpurposedesignedmicroCHPappliancesusingtheMECapproved

controlBoards(suchasRVC32.410rangefromSiemensSwitzerlandLtd)andGridInterfaceController(suchastheSiemensAVS76G83/ENScontrolboard).MEC

acceptsnoresponsibilityforoperationwithanunapprovedcontrolsystem.

2.WARNING:Donothandleelectricalconnectionsduringoperation,whilsthotorduringcooldown.

3.WARNING:TheLFPSEremainsdangerouslyhotaftertheburneristurnedoffandmaycontinuetogenerateelectricityuntilitcools.Waitonehourafterturningtheengine

burnerofforensuretheheadtemperatureisbelow50°Cbeforetouchinganypartoftheengine.CareMUSTbetakenaspartswillstillbehotlongaftertheburneris

extinguished.

4.WARNING:thelowerdome(backend)oftheenginecanreach105°C.

5.WARNING:DonotdisconnectelectricalconnectionsbetweentheLFPSEandthecontrolsuntiltheheaterheadthermocoupleontheenginereadslessthan50°C.Before

performingmaintenanceontheappliance,waitaminimumofonehourfollowingshutdownoftheengineburnertoallowtheLFPSEtocoolsufficiently.IftheLFPSEis

hot,ithasthepotentialtorunandgenerateelectricity,resultinginapossibleelectricshockhazard.

6.WARNING:TheLFPSEContainsMagnetsandemits6mTmagneticfieldstrengthandshouldnotbehandledbypeoplewithmedicalimplantssuchasPacemakers.

7.ThereareNOuserserviceablepartsinsidetheengine.

8.TheLFPSEweighsapproximately48kg.Followproperliftingandhandlingprocedures.ItMUSTonlybeliftedusingthebottomabsorberbracketorsupportfeet.Itshould

onlybestoredonthebottomabsorberbracketorsupportfeet.Undernocircumstancesshoulditbehandledbytheshroudortheburnersealplate.Mechanicalliftingaids

shouldbeused.

9.DonotdroptheLFPSE.

10.AlwaysmaintainLFPSEatorbelowstateddesignspecifications(section4).

11.Neverstrike,weldordrillthevessel,oranycomponentpartoftheLFPSE.

12.Neverattempttoopenthevessel.Thevesselcontainsheliumgasathighpressure.

CapacitorandControlPCBarefundamentalpartofMicrogenEnginesystem.

13.ProtectwiresandwireroutingagainstfatiguecausedbyvibrationoftheLFPSE.EnginepowerwirefailurecanresultintheLFPSEpistonsoverstroking.Thealternator