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b) POSSIBLE SOLUTIONS;
1b) If either the Drum forward or reverse functions (rear) does not respond:
• Verify that the rear panel controls disconnect plug is indeed connected. This disconnect plug
allows for the removal of the rear control panel for dryer servicing.
2b) Defective Forward and Reverse Switch
• Shut power off at the main breaker and remove the rear panel and check switches using an OHM
meter; replace if defective.
• Retest
3b) Wiring Back to Main Electrical Enclosure
• With the control voltage “ON” front panel “GREEN” button
• Select “1” on the “O UNLOAD 1” switch located on the rear controls panel.
• Have someone PRESS either the forward or reverse buttons while you watch the input L.E.D.s
(light emitting diode) of the programmable controller. Do the associated L.E.D.s light?
PLC PIN 20 = DRUM FWD., REAR PANEL
PLC PIN 21 = DRUM REV., REAR PANEL
• If yes, refer to paragraph 2 (section a) on page 75.
• If no, refer to paragraph 2 (section b) on page 76.
4b) The L.E.D.s (light emitting diodes) illuminating on the PLC (Programmable Logic Controller)
indicate that the wiring to the PLC is correct.
• Check FUSE #2 on the Main Electrical Panel
• Check wiring back to the Tumbler Junction Box
• Check wiring back to the rear controls
Refer to wiring diagrams:
• Main Electrical Panel Diagram
• Tumbler Junction Box Wiring Diagram
• Rear Panel Controls Wiring Diagram
• Retest