Lennox ML180UHVK Error Codes

Equipment type not specified · Ducted Heating

• . Idle mode (Decimal blinks at 1 Hertz -- 0.5 second ON, 0.5 second OFF).
• A Indoor Blower Operation: Continuous Fan only mode
• C Cooling stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes.
• E000 No error in memory
• E106 Twin Communication Fault
• E110 Low line voltage.
• E111 Line voltage polarity reversed.
• E112 Ground not detected.
• E113 High line voltage.
• E114 Line voltage frequency out-of-range.
• E115 Low 24V - Control will restart if the error recovers.
• E117 Poor ground detected (Warning only).
• E125 Control failed self-check, internal error, failed hardware. Will restart if error…
• E150 Refrigerant Leak detected
• E151 Refrigerant Leak Detector Sensor #1 fault
• E152 Refrigerant Leak Detector Sensor #2 fault
• E154 Refrigerant Leak Detector #1 Communication lost or invalid sensor dip switch…
• E155 Refrigerant Leak Detector Sensor #2 Communication lost
• E160 Refrigerant Leak Detector Sensor #1 type incorrect
• E161 Refrigerant Leak Detector Sensor #2 type incorrect
• E163 Furnace Control Board Failure
• E164 Low GWP Test
• E200 Hard lockout - Rollout circuit open or previously open.
• E204 Gas valve mis-wired.
• E223 Pressure switch failed open.
• E224 Pressure switch failed closed.
• E227 Pressure switch open during trial for ignition or run mode.
• E240 Low flame current - Run mode.
• E241 Flame sensed out of sequence - Flame still present.
• E250 Limit switch circuit open.
• E270 Soft lockout - Exceeded maximum number of retries. No flame current sensed.
• E271 Soft lockout - Exceeded maximum number of retries. Last retry failed due to the pressure…
• E272 Soft lockout - Exceeded maximum number of recycles. Last recycle due to the pressure…
• E273 Soft lockout - Exceeded maximum number of recycles. Last recycle due to flame failure.
• E274 Soft lockout - Exceeded maximum number of recycles. Last recycle failed due to the limit…
• E275 Soft lockout - Flame sensed out of sequence. Flame signal is gone.
• E290 Ignitor circuit fault - Failed ignitor or triggering circuitry.
• E292 Indoor blower motor unable to start due to obstructed wheel, seized bearings.
• E390 Low GWP Relay Stuck
• H Gas Heat Stage (1 second ON, 0.5 second OFF) 1 or 2 displayed / Pause / Repeat codes.…
• d Dehumidification mode (1 second ON, 1 second OFF) / Pause / Repeat Codes).
• dF Defrost mode.
• h Heat pump stage.

Reference only. Confirm against the manual for your exact model. Data release 105f66ecb9e96e5dc473025d.