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Lennox EL195UH Diagnostic Codes / Fault Codes

Article ID: 643
Last updated: 3 Nov, 2020

Lennox Gas Furnace: EL195UH

Re: Diagnostic Code / Fault Codes

Red Light Description
Off No Power or Control Failure
Heartbeat Power On - Normal Operation
1 Reverse Line Voltage Polarity
2 Improper Earth Ground
3 Burners Failed to Light, Or Flame was Lost
4 Low Flame Signal
5 Multiple Failed Ignition Attempts
6 Not Available
7 Primary or Secondary Limit Open > 3 min.
8 Rollout Switch Open
9 Pressure Switch Open with Inducer On
10 Pressure Switch Opened 5 Times in a Heat Cycle
11 Pressure Switch Closed with Inducer Off
12 Flame Sensed with Gas Valve Off
13 Low Line Voltage

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Article ID: 643
Last updated: 3 Nov, 2020
Revision: 1
Access: Public
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