| 1 | Machinedoesnot work;Phasesequence LEDlightup | 1.Absenceofonephase. 2.Mainscordfailure. 3.MCBfailure. 4.Phasesarenotin sequence. 5.Imbalancebetween phases. | 1.RestoreACsupply. 2.Replacemainscord. 3.ReplacetheMCB. 4.Interchangeanytwophase lines. |
| 2 | Vacuumpumpdoes notworkwhenlidis closedandvacuum levelisalways displayed | 1.Defectivecontactor (coilopenorcontactburned out). 2.Defectiverelaypcb. 3.Defectivevacuumpump. | 1.Replacethecontactor. 2.Replacetherelayboard. 5.Replaceorrectifythevacuum pump. |
| 3 | Theliddoesnot remainclosedeven aftervacuumpump starts | 1.Lidgasketdoesnottouch thechamberfaceuniformly. 2.Defectivelidgasket | a.Pressthelid. b.ReplacetheDefective. |
| 4 | InsufficientVacuum Reading | 1.Lowvacuumsetting 2.Solenoidvalveleaks: atmosphericairentersinto thechamberthroughthe solenoidvalvedueto, a)Defectivesolenoidvalve. b)Defectiverelay. 3.Lowoillevelinthe vacuumpump. 4.Moistercontaminatedoil. 5.Vacuumleaksthroughlid gasket/boltholesonthe lid/pipejoints/bushesat cableentry. 6.Wearandtearofvanesof vacuumpump. 7.DefectiveMCPCBA | 1.Increasethevacuumsetting. 2.a)Replacethesolenoidvalve. b)Replacerelayboard. 3.Keeptherequiredoilqtyinthe vacuumpump. 4.Draintheoilcompletelyand refill. 5.Identifythelocationofleakage andreplacethedefective componentsorrectifytheproblem bytighteningthejoints. 6.Overhaul/replacethepump. 7.Replacethedefective. |
| 5 | Sealingheadoperate butsealingdoesnot takesplace | 1.Lowsealingtimesetting. 2.heatingelementfailure. 3.Defective sealingtransformers. | 1.Increasesealingtime. 2.Replaceheatingelement. 3.Replacedefectivesealing transformers. |
| 6 | Machinehaltsafter sealing | 1.Defectiverelaypcb. 2.Defectiveairinletsolenoid valve. | 1.Replacetherelayboard. 2.Replacesolenoidvalve. |
| 7 | Pouchexpandsduring vacuumtime | 1.Lowgapbetweensealing headandpadholder assembly. | Increasethegapbyadjustingthe padholderassembly. |
| 8 | Nonuniformsealing | 1.Highgapbetweensealing headandpadholder assembly. 2.Sealingheadandpad holdernotalignproperly. 3.BurntTeflonfabric. | 1.Reducethegap. 2.Alignsealingheadandpad holder. 3.ReplacetheTeflonfabric. |
| 9 | Machinesworksfine, butblank/garbage display | 1.Defectivedisplay. 2.FRCcableofdisplayorits connectordefective. | 1.Replacedisplayboard. 2.Replacecableandconnector. |
| 10 | Settingisnotpossible. TheMicrocontroller doesnotrespondingto pushbuttonpressing. | 1.Defectiveswitches. 2.DefectiveFRCCableof DisplayPCB | 1.Replacedisplayboard. 2.Replacecableandconnector. |
| 11 | Systemhangsduring operation | 1.Temporarybuginprogram duetonoise. 2.Defectivemicrocontroller board. | 1.Switchoffandrestartthe machine. 2.ReplaceMicrocontrollerboard. |
| 12 | OverheatingofHeating element/Transformer | 1.Shortcircuitwithbodyof machine. 2.DefectiveRelay PCB/Contactor | 1.Makeproperwireconnections. 2.Replacethedefective. |
| 13 | Machinetripswhile pumpstartsworkingor abnormalsoundof pump. | 1.Windingshortwithbody. 2.Defectivecentrifugal switch. 3.Defectivelovejaw couplingbush. | 1.Rewindorreplacethepump. 2.Replacetheswitchorpump. 3.Replacethebushorpump. |
| 14 | Liddoesn’topenafter completingthe operation. | 1.Defectiverelayintherelay board. 2.Solenoidvalvecoilburned out. 3.Defectiveshockabsorber | 1.Replaceit. 2.Replacethesolenoidvalve. 3.Replaceit. |
| 15 | Displayshowsfreshair always | 1.Defectivereedswitch. | 1.Replacetheswitch. |
