HVACopediaAllied · Furnace
7 flashes Lockout - no ignition
What the control is telling you
The burners failed to ignite after the control's allowed number of tries. Code listed only in the manual; no causes or steps given.
Applies to: A95UH, A93UH, 95G1UH, 92G1UH (sizes 045-08 to 135-20)
Test and repair steps
- Turn off power at the disconnect before touching wiring or components. Gas work: qualified gas tech only.
Models that show this code
15 models in A95/A93/95G1/92G1UH, A95/95G1UH, A93/92G1UH
Other codes on the same units
- 3 flashes Pressure switch open with inducer on
- 4 flashes High limit switch open
- 5 flashes Rollout switch open
- 6 flashes Pressure switch cycle lockout
- 8 flashes Lockout - too many flame dropouts
- 9 flashes Incorrect line voltage phasing
- LED off No power to control or control hardware fault
- LED on Normal operation
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Source: Allied 506724-01 (Issue 1108) A95UH/A93UH/95G1UH/92G1UH Installation Instructions, Diagnostic Codes p.53. Summarized in our own words; check the original manual for your model.
Homeowner looking at this code? See what it means for you and when to call a technician.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.