Transmitter  | Receiver  | Operating Condition |
On (Constant) | On (Constant) | |
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
|