| 1 | Machinedoesn’tseal andthepoweronLED doesn’tglow. | 1.NoACsupply. 2.Fuseblown. 3.Mainscordfailure. | 1.RestoreACsupply. 2.Replacethefuse. 3.Replacemainscord. |
| 2 | Machinedoesn’tseal whenthepedalis pressed. | 1.MicroSwitchdoesnot operate. 2.NooutputfromCT18V. | 1a)Checkthemicroswitchand thenreplacethedefective. b)Checkwhetherthelimitswitch clamppressesthemicroswitch leverwhilethepedalispressed.If notadjusttheclampproperly. a)Checkoutputofthecontrol transformerandthenreplacethe defective. b)IfCToutputis15-18VACrange, thentimerPCBAmaybedefective. |
| 3 | Machinedoesn’tseal. SealingtimeLEDglows whenpedalispressed andbuzzerbeeps whensettime reached. | 1.Burntheatingelement. 2.Endofheatingelement shortedtotheelementbed. 3.Defectivecc2relay. 4.Inputvoltageisbelow than200volt | 1.Replaceit. 2.Replacethebottomfabric. 3.Replaceit. 4.Usestabilizer |
| 4 | Machineseals continuouslywhenthe pedalispressed. SealingtimeLEDglows continuously. | 1.DefectivetimerPCBA. 2.Defectivepotentiometer. | 1.Replaceit. 2.Replaceit. |
| 5 | Machineseals continuouslywhenthe pedalispressed. SealingtimeLEDglows andputoutafterthe settime.Thenbuzzer beeps. | 1.Defectivecc2relay. | 1.Replacetherelay. |
| 6 | Elementfails continuously. or Nonuniformsealing. | 1.Unevenelementbeddue tocloggedadhesiveat differentplaces. 2.Unevengasket. 3.Highertemperature setting. | 1.Cleantheelementbedandstick thebottomfabric. 2.Replacethegasket. 3.Reducethetime. |
| 7 | Jawdoesnotclose whilepressingthepad. | 1.Pedalrodslippedaway fromitsposition. | 1.Repositionthecable. |
