Genie Chainlift 2020, Operation And Maintenance Manual, Page: 15 / 20

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15
Safe-T-Beam® System Self-Diagnostic Troubleshooting
Source (Red LED) Sensor (Green LED) Possible Problem Solution
ON ON Normal operation None required
OFF OFF
• Power Head not powered • Check breakers, fuses, plugs
• Wiring from Power Head bad • Check wiring for obvious shorts
OFF ON
• Wiring to Source missing or bad • Check wiring
• Power has been interrupted • Remove power and reapply
2 BLINKS , Pause • Beam not aligned • Check Source, Sensor alignment
(Repeat) ON • Beam obstructed • Check for obstruction
• Sensor defective • Contact Customer Service
2 BLINKS , Pause • Wire to Sensor missing or bad • Check wiring
(Repeat)
OFF
• Sensor defective • Contact Customer Service
3 BLINKS , Pause • Sensor receiving interference • Determine source of interference
(Repeat) • Check for sunlight or another
opener on nearby door
ON
• Contact Customer Service
4 BLINKS , Pause • Source not sending pulses • Contact Customer Service
(Repeat)
ON
• Source defective • Contact Customer Service
T
ROUBLESHOOTING
G
UIDE