Model reference
Lennox 10GCS-060
HVAC
1 document7 error codes1 service mode
Available documentation
Service Manual
- 10GCS SERIES Service Literature32 pg
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Error codes (7)
CodeMeaning
2 FlashesLockout3 FlashesPressure switch open or closed, or auxiliary limit open (code will not appear…4 FlashesHigh limit or rollout switch open.5 FlashesFlame sensed and gas valve not energized.Fast FlashNormal operation, call for heat.Slow FlashNormal operation, no call for heat.Steady FlashCircuit board self-check failure or ignition/blower control wired incorrectly.Service modes (1)
- Defrost Control Test Mode["Ensure defrost sensor closes at 32°F or below; if temperatures are higher, jumper between defrost…
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