Lennox ML196UHE Error Codes
Equipment type not specified · Ducted Heating
- 1 Reverse Line Voltage Polarity
- 1 Flash Reverse Line Voltage Polarity or Phasing of 120V power
- 10 Watchguard - Pressure Switch opened 5 times during one heat demand
- 10 Flashes Watchguard - Pressure switch opened 5 times during a single heating demand
- 11 Pressure Switch stuck closed prior to activation of combustion air inducer
- 11 Flashes Pressure switch stuck closed prior to activation of Combustion Air Inducer
- 12 Flame Sensed without gas valve energized
- 12 Flashes Flame sensed without gas valve energized
- 13 Low Line Voltage
- 13 Flashes Low line voltage
- 2 Improper Earth Ground
- 2 Flashes Improper earth ground
- 3 Burner failed to light, or lost flame during heat demand
- 3 Flashes Burner failed to light, or lost flame during heat demand
- 4 Low Flame Signal - check flame sensor
- 4 Flashes Low flame signal - check flame sensor
- 5 Watchguard - burner failed to light, exceeded maximum number of retries or recycles.
- 5 Flashes Watchguard - burner failed to light, exceeded maximum number of retries/ recycles, 1 hour…
- 6 Not Used
- 6 Flashes Not used
- 7 Primary or Secondary Limit Open or Watchguard Mode - Limit Switch Open longer than 3…
- 7 Flashes Primary or Secondary limit switch open or Watchguard mode - Limit Switch open longer than…
- 8 Rollout Switch Open
- 8 Flashes Roll-out Switch Open
- 9 Pressure Switch failed to close or opened during heat demand
- 9 Flashes Pressure Switch failed to close or opened during heat demand, inducer on
- Continuous Rapid Flash Call For Heat / Burner Operation
- Fast Heartbeat Call for Heat / Burner Operation
- Heartbeat Normal Operation - Idle, Continuous Fan, Cool
- Off No power to control or board fault detected
- On Board Fault Detected
- Slow Heartbeat Normal Operation - Idle, Continuous Fan, or Cool
Reference only. Confirm against the manual for your exact model. Data release 105f66ecb9e96e5dc473025d.