Lennox iComfort S30 Error Codes
Equipment type not specified
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- 10 Unknown Device Detected
- 105 Communication Problem
- 11 Missing Device
- 110 GF Low AC Line Voltage
- 111 GF Line Polarity Reversed
- 112 GF No Ground Connection
- 113 GF High AC Line Voltage
- 114 AC Line Frequency / Distortion Prob
- 115 Low Secondary (24VAC) Voltage
- 116 ID High Secondary (24VAC) Voltage
- 117 ID Poor Ground
- 12 Indoor Unit Not Detected
- 120 Unresponsive Device
- 124 Tstat Lost Communication To Smarthub
- 125 Control Hardware Problem
- 126 Control Internal Communication Prob
- 13 Duplicate Comfort Sensor ID
- 130 Configuration Jumper Missing
- 132 Device Control Software Fault
- 14 Too Many Devices of the Same Type
- 15 Parameter Mismatch Detected
- 180 Outdoor Temperature Sensor Problem
- 181 OD Suction Pressure Transducer Fault
- 182 OD Suction Temperature Sensor Fault
- 183 OD Liquid Pressure Sensor Fault
- 184 OD LIquid Temperature Sensor Fault
- 20 Protocol Upgrade Required
- 200 GF Rollout Limit Switch Open
- 201 ID Blower Motor Fault
- 202 ID Blower Motor & Unit Size Mismatch
- 203 ID Invalid Size Unit Code
- 204 GF Check Gas Valve
- 205 GF Gas Valve Relay Contact Closed
- 206 GF Gas Valve 2nd Stage Relay Fault
- 207 GF HSI Sensed Open
- 21 Incompatible Equipment Detected
- 223 GF Low Pressure Switch Open
- 224 GF Low Pressure Switch Stuck Closed
- 225 GF High Pressure Switch Failed to Close
- 226 GF High Pressure Switch Stuck Closed
- 227 GF Low Pressure Switch Open in Run Mode
- 228 GF Inducer Calibration Issue
- 229 Ignition on High Fire
- 240 GF Low Flame Current - Run Mode
- 241 GF Flame Out of Sequence-Still Present
- 250 GF Primary Limit Switch Open
- 252 ID Discharge Air Temperature High
- 270 GF Flame Failed To Ignite
- 271 GF Low Press Switch Open
- 272 GF Low Press Switch Open Run Mode
- 273 GF Flame Fail In Run Mode
- 274 GF Primary Limit Switch Open
- 275 GF Flame Out Of Seq. No Flame
- 276 GF Calibration Failure
- 29 Over Temperature Protection
- 290 GF Ignition Circuit Fault
- 291 GF Heat Airflow Below Min
- 292 ID Blower Motor Start Fault
- 294 GF Inducer Motor Overcurrent
- 295 ID Blower Over Temperature
- 30 Low Temperature Protection
- 3000 Filter 1
- 3001 Filter 2
- 3002 Humidifier pad
- 3003 Replace UV Bulb
- 3004 Maintenance
- 3005 Pure Air Maintenance
- 31 Lost communication with Device
- 310 Discharge Air Temp Sensor Problem
- 311 GF Heat Rate Reduced To Match Airflow
- 312 Reduced/ Airflow-Indoor Blower Cutback
- 32 Device Resetting
- 34 Must Program Unit Capacity For Device
- 344 GF IFC Relay Y1 Stuck
- 345 Relay O Failure
- 346 AH HP Jumper Not Removed
- 347 ID or EIM Relay Y1 Fault
- 348 ID Relay Y2 Fault
- 349 GF IFC Error Check Jumper O To R
- 35 Incorrect Operation Of Device
- 350 AH Electric Heat Not Configured
- 351 AH Electric Heat Stage 1 Fault
- 352 AH Electric Heat Stage 2 Fault
- 353 AH Electric Heat Stage 3 Fault
- 354 Electric Heat AH Electric Heat Stage 4 Fault
- 355 AH Electric Heat Stage 5 Fault
- 36 Heating when Not Requested
- 37 Cooling when not Requested
- 370 GF Interlock Switch Open
- 371 AH Float Switch Sensed Open
- 38 Not Heating when Requested
- 380 EIM Interlock Relay Fault
- 381 EIM Interlock Relay Stuck
- 382 EIM Relay W1 Fault
- 39 No Cooling when Requested
- 40 HP Heating Lockout.
- 400 OD LSOM Comp. Internal Overload Tripped
- 4000 User Wi-Fi state change, disabled
- 4001 Firmware download failed
- 4002 Image file download failed
- 401 OD Compressor Long Run Cycle
- 402 OD System Pressure Trip
- 403 OD Compressor Short-Cycling
- 404 OD Compressor Rotor Locked
- 405 OD Compressor Open Circuit
- 406 OD Compressor Open Start Circuit
- 407 OD Compressor Open Run Circuit
- 408 OD Compressor Contactor Welded
- 409 OD Control Board Low 24VAC
- 41 Device Control Board Replaced
- 410 OD Open Low Pressure Switch
- 411 OD Low Pressure Switch Strikes Lockout
- 412 OD Open High Pressure Switch
- 413 OD High Pressure Switch Strikes Lockout
- 414 OD High Discharge Line Temperature
- 415 OD High Discharge Line Temp Strikes Lockout
- 416 OD Coil Sensor Faulty
- 417 OD Discharge Sensor Faulty
- 418 OD EIM W Output Hardware Fault
- 419 OD EIM W Output Hardware Fault Lockout
- 420 AH EIM Defrost Out Of Cycle
- 421 OD EIM W External Miswire Fault
- 422 OD Compressor Top Cap Switch Open
- 423 OD Inverter CT Circuit Fault
- 424 OD Liquid Line Sensor Faulty
- 426 OD Excessive Inverter Alarms
- 427 OD Inverter DC Peak Fault
- 428 OD Inverter High Main Input Current
- 429 OD Inverter DC Link Low Voltage
- 430 OD Inverter Compressor Startup Fail
- 431 OD Inverter PFC Fault
- 432 OD Inverter DC Link High Voltage
- 433 OD Inverter Compressor Over-current
- 434 OD Inverter Comm Error to Main Control
- 435 OD Inverter EEPROM Checksum fault
- 436 OD Inverter High Heat-Sink Temperature
- 437 OD Inverter Heat-Sink temp Sensor Fault
- 438 OD Inverter PFC Input Overcurrent
- 440 OD Inverter Compressor Slowdown - High Heat-Sink temperature
- 441 OD Inverter Compressor Slowdown - High Compressor Current
- 442 OD Compressor Top Cap Switch Strikes Lockout
- 443 OD MUC Unit Code To Inverter Model Mismatch
- 444 HP Reversing Valve Relay Or Solenoid Fault
- 446 OD Low Suction Pressure Fault
- 500 PA Differential Pressure Sensor Fault
- 501 PA UV Sensor Fault
- 502 PA UV Lamp Off
- 503 PA Filter Life At 10%
- 504 PA Filter Life At 0%
- 505 PA Model Selection Changed
- 506 PA Lamp At 0% life
- 507 PA Filter Calibration Failure
- 530 ZS Low Damper 24VAC Voltage
- 532 ZS Zoning Pressure Switch Opened (High Pressure)
- 542 ZS Zone 1 Temp Sensor Fault
- 543 ZS Zone 2 Temp Sensor Fault
- 544 ZS Zone 3 Temp Sensor Fault
- 545 ZS Zone 4 Temp Sensor Fault
- 546 ZS Parameters resetting from restored power
- 547 ZS Parameters resetting from system interruption
- 548 ZS Humidity Sensor Error
- 551 ZS Zone Sensor Lost Communication
- 600 Load Shed Event
- 601 OD Unit Low Ambient Operational Lockout
- 610 Low Room Temperature Detected
- 611 High Room Temperature Detected
- 65537 Missing Base
- 65538 Missing Base
- 65539 Thermostat Lost Connection Or Internal Fault
- 65540 Missing HD wall display
- 65541 Download Failed
- 65542 Update Failed
- 65543 Firmware Updated
- 65544 More Than 8 Tstats In A Group
- 65545 Cooling Capacity Alert
- 700 Thermostat Temp Sensor Problem
- 701 Thermostat Temp Above Limit
- 703 Thermostat Humid Sensor Problem
- Amber (Blinking) Wi-Fi Error. Blinking amber LED indicates either Wi-Fi is not connected, no Wi-Fi is…
- Blue System is normal. No mobile device is directly connected using Wi-Fi to the smart hub.
- Cyan HVAC Error. Indoor unit is not connected or unable to communicate.
- Green (Blinking) Blinking green LED indicates the commissioning button has been activated and the smart…
- Green (Solid) A solid green LED indicates a mobile device is connected to the smart hub.
- Magenta (Blinking) Thermostat Error. Blinking magenta LED indicates HD display not connected. (See “Table 4.…
- Red HVAC Fault. System has critical alert which needs attention.
Reference only. Confirm against the manual for your exact model. Data release 105f66ecb9e96e5dc473025d.