| 1 | Machine doesn’t seal andpower onLED doesn’t glow. | 1.NoACsupply. 2.Fuseblown. 3.Mains cord failure. | 1.Restore ACsupply. 2.Replace thefuse. 3.Replace mainscord. |
| 2 | Machine doesn’t seal whenthe pedal is pressed. | 1.Microswitch does not operate. 2.Nooutput from CT18V. | a)Check the microswitch and thenreplace the defective. b)Check whether the link D presses the microswitchlever while the pedal is pressed. Ifnot adjust the link D properly. a)Check output of the control transformer andthen replace the defective. b)IfCT output is 15-18VAC range then timer PCBAmaybe defective. |
| 3 | Machine doesn’t seal. Sealingtime LED glowswhen pedal is pressed andbuzzer beeps when set time reached. | 1.Burnt heating element. 2.Both endofheating element shorted to the element bed. 3.Defective relay. | 1.Replace it. 2.Replace the bottom fabric. 3.Replace it. |
| 4 | Machine seals continuously when thepedal is pressed. Sealingtime LED glowscontinuously. | 1.Defective timer PCBA. 2.Defective potentiometer. | 1.Replace it. 2.Replace it. |
| 5 | Machine seals continuously when thepedal is pressed. Sealingtime LED glowsandput out after the set time. Thenbuzzer beeps. | 1.Defective relay. | 1.Replace the relay. |
| 6 | Element fails continuously. or Nonuniform sealing. | 1.Uneven element bed due to clogged adhesive at different places. 2.Bentonpressure pad. 3.Higher temperature setting. | 1.Clean the element bed and stick the bottomfabric. 2.Replace the pressure pad. 3.Reduce the time. |
| 7 | Jawdoes not close while pressing the pad. | 1.Pedal cable slipped away fromits position. | 1.Reposition the cable. |
