LED Diagnostic Code Troubleshooting Guide

Transmitter

Receiver

Operating Condition

On
(Constant)

On
(Constant)

• Normal operation

Off

Off

• Motor head not powered
• Wiring from motor head defective

Off

On
(Constant)

• Wiring to STB transmitter missing or defective

2 Flashes, Pause
(Repeat)

On
(Constant)

• Infrared beam not aligned
• Infrared beam obstructed
• STB receiver defective

2 Flashes, Pause
(Repeat)

Off

• Wiring to STB receiver missing or defective
• STB receiver defective

3 Flashes, Pause
(Repeat)

On
(Constant)

• STB receiver interference

4 Flashes, Pause
(Repeat)

On
(Constant)

• STB transmitter not sending pulses