«Airflow»
001
Filters, Clogged up
004
Filters, Missing
005
Electric heating elements
011
High Temperature, Blowing
012
Low Temperature, Ambient
013
Gas burner, 1
014
Gas burner, 2
015
Low Temperature, Blowing
022
High Temperature, Ambient
023
Humidifier
031
Low Humidity, Ambient
032
High Humidity, Ambient
033
Pump
041
Clock card
070
BE50
071
Temperature sensor, Ambient
081
Humidity sensor, Ambient
082
Temperature probe, Outside
083
Humidity sensor, Outside
084
Temperature probe, Blower
085
Circuit 1, Temperature sensor, Water condenser Outlet
086
Circuit 2, Temperature sensor, Water condenser Outlet
087
Temperature sensor, return or Mixing air
088
Treatment Fan
091
Circuit 1, Condenser fan
092
Circuit 2, Condenser fan
093
Circuit 3, Condenser fan
094
Circuit 4, Condenser fan
095
Low temperature, Water Condenser
096
High temperature, Water Condenser
097
Flow rate, water condenser
098
Smoke detector
099
Circuit 1, Probe or Sensor
111
Circuit 1, High pressure or electrical protection
115
Circuit 1, Low pressure
117
Circuit 2, Probe or Sensor
121
Circuit 2, High pressure or electrical protection
125
Circuit 2, Low pressure
127
Circuit 3, Probe or Sensor
131
Circuit 3, High pressure or electrical protection
135
Circuit 3, Low pressure
137
Circuit 4, Probe or Sensor
141
Circuit 4, High pressure or electrical protection
145
Circuit 4, Low pressure
147
CLIMATIC™50 – IOM – Rooftops/ Aircoolair
CL50-ROOFTOPS-IOM-1107-E
27
Climatic 50 Roof-Top, Aircoolair & Compactair Version 24
Error Codes | Problem |
---|---|
001 | Airflow |
004 | Filters, Clogged up |
005 | Filters, Missing |
006 | Recovery Module , Filters, Clogged up |
011 | Electric heating elements |
012 | High Temperature, Blowing |
013 | Low Temperature, Ambient |
014 | Gas burner, 1 |
015 | Gas burner, 2 |
022 | Low Temperature, Blowing |
023 | High Temperature, Ambient |
031 | Humidifier |
032 | Low Humidity, Ambient |
033 | High Humidity, Ambient |
041 | Pump |
051 | Recovery Module, Motor failure |
052 | Recovery Module, Wheel failure |
070 | Clock card |
071 | BE50, 1 |
072 | BE50, 2 |
081 | Temperature sensor, Ambient |
082 | Humidity sensor, Ambient |
083 | Temperature probe, Outside |
084 | Humidity sensor, Outside |
085 | Temperature probe, Blower |
086 | Circuit 1, Temperature sensor, Water condenser Outlet |
087 | Circuit 2, Temperature sensor, Water condenser Outlet |
088 | Temperature sensor, return or Mixing air |
091 | Blower |
092 | Circuit 1, Condenser fan |
093 | Circuit 2, Condenser fan |
094 | Circuit 3, Condenser fan |
095 | Circuit 4, Condenser fan |
096 | Low temperature, Water Condenser |
097 | High temperature, Water Condenser |
098 | Flow rate, water condenser |
099 | Smoke detector |
111 | Circuit 1, Probe or Sensor |
115 | Circuit 1, High pressure or electrical protection |
117 | Circuit 1, Low pressure |
118 | Circuit 1, Risk of Frosting |
121 | Circuit 2, Probe or Sensor |
125 | Circuit 2, High pressure or electrical protection |
127 | Circuit 2, Low pressure |
128 | Circuit 2, Risk of Frosting |
131 | Circuit 3, Probe or Sensor |
135 | Circuit 3, High pressure or electrical protection |
137 | Circuit 3, Low pressure |
141 | Circuit 4, Probe or Sensor |
145 | Circuit 4, High pressure or electrical protection |
147 | Circuit 4, Low pressure |
EL180DFE series units are mid-efficiency gas furnaces used for downflow applications only, manufactured with Lennox Duralok heat exchangers formed of aluminized steel. EL180DFE units are available in heating capacities of 44,000 to 110,000 Btu/h and cooling applications 1.5 to 5 tons. Refer to Engineering Handbook for proper sizing.
The integrated control is equipped with an LED light for troubleshooting
Off -No power to control or board fault detected
On- Board fault detected,
Heartbeat1- Control powered – displayed during all modes of operation if no errors are detected
- Reverse Line Voltage Polarity
- Improper Earth Ground
- Burner failed to light, or lost flame during heat demand
- Low Flame Signal – check flame sensor
- Watchguard – burner failed to light, exceeded maximum number of retries or recycles.
- Not Used
- Primary or Secondary Limit Open or Watchguard Mode – Limit Switch Open longer than 3 minutes.
- Rollout Switch Open
- Pressure Switch failed to close or opened during heat demand
- Watchguard – Pressure Switch opened 5 times during one heat demand
- Pressure Switch stuck closed prior to activation of combustion air inducer
- Flame Sensed without gas valve energized
- Low Line Voltage
Notes:
Note 1
A ”Heartbeat” is indicated by a ”Slow Flash” – 1 sec on 1 sec off, repeating
Note 2
Error codes are indicated by a ”Rapid Flash” – the LED flashes X times at 1/2 sec on 1/2 sec off, remains off for 3 sec, then repeats
Note 3
Last 10 error codes are stored in memory including when power is shut off to the unit. – To recall, press and release button, most recent will be displayed first, LED off for 3 sec, then next error code is displayed, etc. To clear error codes, depress and hold button longer than 5 seconds.
Lennox AC Error Codes and Troubleshooting
Installation Operating and Maintenance Manual: Lennox Rooftop Service Manual
*PLEASE SEND ME ANY COMMENT, SUGGESTION OR CORRECTION YOU MAY HAVE.
В этом видео вы увидите обзор меню контроллера Climatic 60 на сервисном пульте DS60 Lennox.
Меню контроллера большое и одним видео не обойтись, поэтому обзор будет разбит на несколько частей.
Контроллер ни к чему не подключен. После загрузки мы будем видеть наличие ошибок. О чем сигнализирует кнопка с изображением колокольчика красного цвета.
Если у вас не отображается текст, то необходимо проверить и правильно выставить адреса дисплея и контроллера. Это делается следующим образом – одновременно на 5 секунд зажимаются кнопки стрелка вверх, стрелка вниз и Enter. Необходимо выставить адрес пульта 32, а платы управления 01. Стрелкой вверх и вниз выбирается номер адреса, Enter подтверждение. Если адрес правильный, то появится информация о загрузке дисплея. Если адреса не менять, то после нажатия двух раз Enter, то появляется меню настройки других терминалов, но здесь этого не требуется.
После загрузки пульт просит выбрать номер агрегата к которому будет произведено подключение. К одному контроллеру Climatic 60 можно подключить до 8 агрегатов по сети pLan. У меня других устройств к контроллеру не подключено, поэтому выбрать ничего нельзя. Для подтверждения выбора агрегата нажимаем кнопку Enter.
После нажатия кнопки появляется экран с общими данными о версии прошивки, текущего языка, даты и времени. При нажатии кнопки вниз изменяется язык интерфейса. На выбор два языка английский и испанский.
При нажатии на Enter мы входим в главное меню.
Главное меню состоит из двух подменю при работе под логином User и из трех меню, если ввести пароль.
Для ввода пароля необходимо выйти из этого меню к экрану с общими данными и нажать последовательно комбинацию кнопок.
Сначала нажать одновременно колокольчик и кнопку вверх, потом кнопку PRG, затем кнопку вверх и в конце кнопку Enter. При каждом нажатии на экране будут появляться звездочки, которые говорят, что мы правильно вводим пароль.
После ввода пароля станет доступно меню эксперт.
Структура меню многоуровневая. Нахождение в том или ином разделе говорят 4 цифры вверху экрана.
Меню ALARM. Меню User. Меню Эксперт.
Меню очень обширное и многоуровневое. Некоторые пункты могут быть скрыты и появляются только при выборе тех или иных компонентов агрегата – теплообменник водяной, газовый или электрический, тип агрегата руфтоп или компрессорно-конденсаторный блок (ККБ). Программа предназначена как для руфтопов, так и для ККБ. Более подробное описание меню можно найти в инструкции к контроллеру Climatic 60. Файл под видео.
Рассмотрим меню Alarm
Подтверждение выбора осуществляется нажатием кнопки Enter.
В меню Alarm можно перейти нажав кнопку с изображением колокольчика, при чем в каком уровне меню вы бы не были и нажатием ESC вы снова вернетесь в тоже меню где были.
Информация по ошибкам представлена следующим образом: номер ошибки по порядку, день, месяц, час, минута её формирования и код ошибки. Количество записей аварий 99 шт, хотя в инструкции указано только 32-е строчки.
При нажатии кнопки Enter мы переходим к описанию самой ошибки. Описание кодов ошибок, причина появления и способ их устранения смотрите в инструкции к контроллеру Climatic60. Всего кодов ошибок 344.
Повторное нажатие Enter подтверждает снятие ошибки и возвращает вас к списку аварий. Если причина аварии устранена, то ошибка сбросится, исчезнет символ колокольчика.
Продолжение смотрите в следующем видео.
Инструкция_Lennox_Climatic60.pdf
«Airflow»
001
Filters, Clogged up
004
Filters, Missing
005
Electric heating elements
011
High Temperature, Blowing
012
Low Temperature, Ambient
013
Gas burner, 1
014
Gas burner, 2
015
Low Temperature, Blowing
022
High Temperature, Ambient
023
Humidifier
031
Low Humidity, Ambient
032
High Humidity, Ambient
033
Pump
041
Clock card
070
BE50
071
Temperature sensor, Ambient
081
Humidity sensor, Ambient
082
Temperature probe, Outside
083
Humidity sensor, Outside
084
Temperature probe, Blower
085
Circuit 1, Temperature sensor, Water condenser Outlet
086
Circuit 2, Temperature sensor, Water condenser Outlet
087
Temperature sensor, return or Mixing air
088
Treatment Fan
091
Circuit 1, Condenser fan
092
Circuit 2, Condenser fan
093
Circuit 3, Condenser fan
094
Circuit 4, Condenser fan
095
Low temperature, Water Condenser
096
High temperature, Water Condenser
097
Flow rate, water condenser
098
Smoke detector
099
Circuit 1, Probe or Sensor
111
Circuit 1, High pressure or electrical protection
115
Circuit 1, Low pressure
117
Circuit 2, Probe or Sensor
121
Circuit 2, High pressure or electrical protection
125
Circuit 2, Low pressure
127
Circuit 3, Probe or Sensor
131
Circuit 3, High pressure or electrical protection
135
Circuit 3, Low pressure
137
Circuit 4, Probe or Sensor
141
Circuit 4, High pressure or electrical protection
145
Circuit 4, Low pressure
147
CLIMATIC™50 – IOM – Rooftops/ Aircoolair
CL50-ROOFTOPS-IOM-1107-E
27
If any error occurs in your air conditioner, indoor display shows error codes. Once you nail down the issue you can easily call in a professional, or fix the issue yourself. To help you out we have listed down the most common error codes of Lennox AC.
Indoor Unit Display Codes
Error Codes | Cause |
---|---|
E0 | EEPROM parameter error |
E1 | Indoor/outdoor units communication protection |
E2 | Zero-crossing signal error |
E3 | Indoor fan speed out of control |
E5 | Open or short circuit of outdoor temperature sensor or outdoor unit EEPROM parameter error |
E6 | Open or short circuit of room or evaporator temperature sensor |
E7 | Outdoor fan speed out of control |
P0 | IBM malfunction or IGBT over-strong current protection |
P1 | Over voltage or too low voltage protection |
P2 | Temperature protection of compressor top |
P4 | Inverter compressor drive error |
Split Type AC Codes
If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi errors occur at the same time, their codes will be displayed circularly.
Error Codes | Meaning |
---|---|
E1 | High pressure protection. |
E2 | Anti-freezing protection. |
E3 | Low pressure protection. |
E4 | High discharge temperature protection. |
E5 | Whole unit over-current protection. |
E6 | Indoor and outdoor communication error. |
E7 | Running mode conflict. |
E8 | Overload protection. |
E9 | Indoor unit full water error. |
EN | Current protection. |
EU | Frequency restricted/reduced with IPM temperature protection. |
EL0C | Refrigerant leakage detection. |
EH61 | Evaporator coil middle temperature sensor T2 is in open circuit or has short circuited. |
F0 | System charge shortage or blockage protection. |
F1 | Return air temperature sensor open/ short circuited. |
F2 | Evaporator temperature sensor open/ short circuited. |
F3 | Outdoor ambient temperature sensor open/ short circuited. |
F4 | Outdoor unit condenser mid-tube temperature sensor open/short circuited. |
F5 | Discharge temperature sensor open/ short circuited. |
F6 | Frequency restricted/reduced with overload protection. |
F8 | Frequency restricted/reduced with whole unit current protection. |
F9 | Frequency restricted/reduced with high discharge temperature. |
FH | Frequency restricted/reduced with antifreezing protection. |
Fo | Pump-down. |
H1 | Forced defrosting. |
H3 | Compressor overheating protection. |
H5 | IPM Current protection. |
H6 | Motor stalling. |
H7 | Compressor desynchronizing. |
HC | PFC protection. |
HE | Compressor demagnetization protection. |
P5 | Over phase current protection. |
P6 | Drive board communication error. |
P7 | IPM temperature sensor open/short circuited. |
P8 | IPM Temperature Protection. |
P9 | AC contactor protection. |
PD | Sensor connection protection. |
PE | Temperature drift protection. |
PF | Drive board temperature sensor error. |
PH | DC bus over-voltage protection. |
PL | DC bus under-voltage protection. |
PP | AC input voltage abnormal. |
PU | Capacitor charging error. |
PC00 | Inverter module IPM error. |
PC01 | High or Low voltage protection. |
PC02 | High temperature sensed at compressor top. |
PC03 | Low or High pressure protection. |
PC04 | Inverter compressor drive error. |
PC08 | Current overload protection. |
PC0L | Outdoor low ambient temperature protection. |
U1 | Compressor phase current sensing circuit error. |
U3 | DC bus voltage drop error. |
U5 | Whole unit current sensing circuit error. |
U7 | 4-way valve reversing error. |
U8 | PG motor zero-crossing protection. |
L3 | Outdoor fan 1 error protection. |
L9 | Over-power protection. |
LA | Outdoor fan 2 error protection. |
LC | Compressor startup failure. |
LD | Compressor phase loss/reversal protection. |
LE | Compressor stalling. |
LF | Over-speeding. |
LP | Indoor and outdoor units unmatched. |
B5 | Indoor unit liquid valve temperature sensor open/short circuited. |
B7 | Indoor gas valve temperature sensor open/ short circuited. |
C5 | Jumper error. |
DN | Communication line misconnected or expansion valve error. |
105 | Device communication failure |
120 | Unresponsive device |
124 | Active subnet controller missing |
125 | Hardware failure |
126 | Internal control communication failure |
131 | Corrupted control parameters |
132 | Failed flash CRC check |
180 | Ambient sensor problem |
400 | Compressor internal overload trip |
401 | Long run time. Compressor is running extremely long run cycles |
402 | System pressure trip. |
403 | Short cycling. Compressor is running less than three minutes |
404 | Locked rotor. Compressor has a locked out due to run capacitor short, bearings are seized, excessive liquid refrigerant |
405 | Open circuit. |
406 | Open start circuit |
407 | Open run circuit |
408 | Welded contactor. Compressor always runs |
409 | Secondary low voltage. |
410 | Low pressure fault |
411 | Low pressure switch lockout |
412 | High pressure fault |
413 | High pressure switch lockout |
414 | Discharge line temperature fault |
415 | Discharge line temperature lockout |
417 | Discharge sensor fault |
Ds11, Ds13, Ds14, Ds15 | OEM mode. Factory test mode |
Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.
Remote Control Buttons Meaning
Mini Split Type Codes
Indoor and Outdoor Error Codes
Rooftop Codes
Climatic 50 Roof-Top, Aircoolair & Compactair Version 24
Error Codes | Problem |
---|---|
001 | Airflow |
004 | Filters, Clogged up |
005 | Filters, Missing |
006 | Recovery Module, Filters, Clogged up |
011 | Electric heating elements |
012 | High Temperature, Blowing |
013 | Low Temperature, Ambient |
022 | Low Temperature, Blowing |
023 | High Temperature, Ambient |
051 | Recovery Module, Motor failure |
052 | Recovery Module, Wheel failure |
081 | Temperature sensor, Ambient |
082 | Humidity sensor, Ambient |
083 | Temperature probe, Outside |
084 | Humidity sensor, Outside |
085 | Temperature probe, Blower |
086 | Circuit 1, Temperature sensor, Water condenser Outlet |
087 | Circuit 2, Temperature sensor, Water condenser Outlet |
088 | Temperature sensor, return or Mixing air |
096 | Low temperature, Water Condenser |
097 | High temperature, Water Condenser |
Troubleshooting
Please check below items before asking for maintenance.
Phenomenon: Indoor unit can’t receive remote controller’s signal or remote controller has no action.
Check items:
- Whether remote controller is within the signal receiving range?
- Whether there are obstacles?
- Whether remote controller is pointing at the receiving window?
- Is sensitivity of remote controller low; fuzzy display and no display?
- No display when operating remote controller?
- Fluorescent lamp in room?
Solution:
- Signal receiving range is 8m.
- Remove obstacles.
- Select proper angle and point the remote controller at the receiving window on indoor unit.
- Check the batteries. If the power of batteries is too low, please replace them.
- Check whether remote controller appears to be damaged. If yes, replace it.
- Take the remote controller close to indoor unit.
Phenomenon: No air emitted from indoor unit
Check items:
- Air inlet or air outlet of indoor unit is blocked?
- Under heating mode, indoor temperature is reached to set temperature?
- Heating mode is turned on just now?
Solution:
- Eliminate obstacles.
- After reaching to set temperature, indoor unit will stop blowing out air.
- In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.
Phenomenon: Air conditioner can’t operate
Check items:
- Power failure?
- Is plug loose?
- Air switch trips off or fuse is burnt out?
- Wiring has malfunction?
- Unit has restarted immediately after stopping operation?
- Whether the function setting for remote controller is correct?
Solution:
- Wait until power recovery.
- Reinsert the plug.
- Ask professional to replace air switch or fuse.
- Ask professional to replace it.
- Wait for 3min, and then turn on the unit again.
- Reset the function.
Phenomenon: Mist is emitted from indoor unit’s air outlet
Check items: Indoor temperature and humidity is high?
Solution: Because indoor air is cooled\rapidly. After a while, indoor temperature and humidity will be decrease and mist will disappear.
Phenomenon: Cooling ( heating) effect is not good
Check items:
- Voltage is too low?
- Filter is dirty?
- Set temperature is in proper range?
- Door and window are open?
Solution:
- Wait until the voltage resumes normal.
- Clean the filter.
- Adjust temperature to proper range.
- Close door and window.
Phenomenon: Outdoor unit has vapor
Check items: Heating mode is turned on?
Solution: During defrosting under heating mode, it may generate vapor, which is a normal phenomenon.
Phenomenon: ”Water flowing” noise
Check items: Air conditioner is turned on or turned offjust now?
Solution: The noise is the sound of \refrigerant flowing inside the unit, which is a normal phenomenon.
Phenomenon: Cracking noise
Check items: Air conditioner is turned on or turned offjust now?
Solution: This is the sound of frictioh caused by expansion and/or contraction of panel or other parts clue to the change of temperature.
Manual Pdf
Lennox Air Conditioner Manual PDF
Lennox Rooftop Service Manual
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Regarding error and fault codes, we believe sharing knowledge is the best way to help everyone. That is why we established ACErrorCode.com, to give you every bit of info you need as a customer. HVAC Expert Contact: dannyreese@acerrorcode.com Call: 916-954-2677
*If you can’t find the code you’re looking for on our site, please let us know, and we’ll update our database as soon as possible.
Lennox Furnace Error Codes: Lennox has a big name among all the HVAC companies. Many users have trust in this name and are using products developed and designed by this company for many years.
But, as it has a big name, there are many errors that users face frequently, and in this guide, we are going to touch on almost all the common errors that users face on their Lennox furnace.
There are a lot of errors that a Lennox furnace has, some of them can be fixed on your own but, some not. To fix some errors, you have to call a professional. Don’t worry, before spending your money on a professional, it is good to try fixing the error on your own.
This guide has included methods for each error that can fix if you apply them properly.
Lennox Error Code 426
Lennox Error Code 426 is a critical error that is related to the outdoor unit. Users may face an error message associated with this error that is- “Excessive inverter alarms.” This error code usually appears when the outdoor contour is lockout after 10 faults within one hour.
To fix this error code, disconnect the outdoor unit from the power and restart it. This should fix the error, if it fails, call a Lennox tech.
Lennox Error Code 430
Lennox Error Code 430 could be a moderate or critical error and relates to the outdoor unit. This error code indicates compressor startup failure. When this condition is detected, the outdoor unit will stop functioning, and this would be a moderate condition. If the same condition occurs 10 times within an hour, the whole system will lock out, and this would be a critical condition.
To Fix this error, disconnect the outdoor unit from the power and restart it. This should fix the error, if it fails, call a Lennox professional.
Lennox Error Code 271
Lennox Error Code 271 usually indicates that the furnace is away from the power. This could be due to the outlet not passing sufficient power to the furnace, a dirty filter, broken wires in the blower motor, or sometimes, a defective thermostat.
To fix this error code, follow these simple tricks:
- Check the outlet and make sure that the power is coming from it or not.
- Clear the dirt filter, and if it needs, replace it.
- The blower motor may have defected or broken wires, need to contact a Lennox tech.
- Replace the Thermostat if it is defective.
Also Read: Lennox Mini Split error codes and their Solution
Lennox Error Code 250 or E250
Lennox Error Code 250 or E250 means the furnace’s primary limit switch is open. This error code is a moderate error. To fix this error code, Check for the proper firing rate on the furnace, confirm that there is no blockage in the furnace and the duct, and Check for proper airflow.
If nothing helps, call a Lennox assistance or professional.
Lennox Error Code E126 or 126
This error code is an internal communication issue with the control. This may arise due to some hardware issues or circuit issues. Call a professional to deal with this error.
Lennox Error Code 532
Lennox Error Code 532 usually affects the damper control module and indicates that the joining pressure switch is opened (high pressure). This usually happens when pressure is above the specified limit or the compressor is turned off.
Set the compressor pressor within the limit to fix this error code. If you are not able to do that, call a professional.
Lennox Error Code 310
Lennox Error Code 310 generally affects Furnace, air handler equipment, interface module, or damper control module. Users see this error usually when there is a discharge air temperature sensor problem.
How to Fix Lennox Error Code 310?
To fix this error, follow these steps:
- Compare outdoor discharge sensor resistance to temperature. (In the resistance charts in system component installation instruction)
- Replace discharge air sensor if feel necessary.
- Call a professional, if needed.
Lennox Error Code 273
Lennox Error Code 273 is related to the furnace and usually appears when the furnace flame goes off during a heating cycle. This is a critical error, and when this appears, the system goes into WatchGuard mode.
To fix this error:
- Check micro-amperes of the flame sensor using the thermostat diagnostics.
- Clean or replace the sensor, as the second step.
- Measure voltage of neutral to ground to confirm good unit ground.
- Call a professional, if feels something wrong.
Lennox Error Code 410
Lennox Error Code 410 is a moderate error that relates to the outdoor unit. This error code usually appears when the unit’s low-pressure measures are below the required limit. Call a Lennox tech to deal with this error.
Lennox Error Code 223
Lennox Error Code 223 is non-neglecting as it is a critical error. This is related to the Furnace and usually indicates that the furnace’s low-pressure switch is open.
Call a professional to deal with this error.
Lennox Error Code 312
Lennox Error Code 312 indicates an issue with the Furnace or air handler. Usually, this error code arises if the indoor blower fails to provide the requested CFM due to high static pressure. This code is a warning
In other words, error code 312 on Lennox usually means that your furnace is distributing less heat. A dirty filter is one of the most common causes of this error code.
How to Fix Lennox Error Code 312?
- Check the air filter and clean it, if necessary, change it.
- If after changing or clearing the air filter, the error code is still appearing, call a professional to look into this.
Lennox Error Code 201
Lennox error code 201 indicates a communication issue with your furnace and the indoor blower motor. The indoor blower distributes warm air, so if this error code is appearing, you won’t have heat.
As the possible cause, you can consider- A power outage, A brown-out, the motor not receiving power, wiring issue, condensation on uncovered system component controls, or a flipped breaker.
How to fix Lennox Error Code 201?
Follow these steps to fix this error:
- Make sure the furnace switch is set to the ON position.
- Check the air filter and the breaker box.
- If any doubt, call a professional.
Lennox Error Code 207
Lennox error code 207 denotes an issue with the hot source ignitor. This usually indicates that the hot source igniter is open. A hot source ignitor lights the gas in your furnace that creates heat. When this error appears, your furnace won’t turn on for safety reasons.
Call a professional to solve this error code.
Lennox Error Code 125
Lennox Error Code 125 indicates a hardware issue that can be with the thermostat, furnace, air handler, outdoor unit, equipment interface, or damper control module. To fix this error code, you will need to call a professional as the control board may need to be replaced.
Final Thoughts
We have included almost all the common Lennox error codes in this blog to make this a complete guide on Lennox error codes and their solutions. If your error is not mentioned in this guide, comment to us.
We hope, you have found the solution for your Lennox error code and solved that error using this guide. Don’t forget to share your opinion.
Frequently Asked Questions
Flickering Light on Lennox Heating System: What does it Mean?
If you have noticed one light going ON and OFF quickly and the other going ON and OFF slow, this usually means that your furnace may have a low flame signal.
The pair of LED lights are off: What does it Mean?
If the pair of LED lights are off, this usually means that your HVAC system is not having electricity.
All lights are flickering slowly, what does it Mean?
If all the lights are flickering slowly, this usually means that your heater’s blower motor possibly isn’t operating.
Lennox furnaces have built-in safety features and the ability to communicate error codes. You should learn and prepare yourself for a list of expected system errors. In this guide, you’ll find out what all Lennox furnace error codes mean and what you should do to try and fix the problem.
Understanding these Lennox error codes makes furnace repairs faster and more cost-effective.
Lennox furnaces use blinking red and green LED lights to display error codes. The light will flash for the sequence, pause, and then flash again. To read the code, note its blinking pattern and count how many light flashes.
To determine what a particular light combination signifies, consult the installation guide for your particular Lennox furnace model.
These LED lights are located in the bottom compartment. Remove the front cover of the furnace, and you will find a row of LEDs.
How to Read Lennox Furnace Error Codes
Normal furnace operation with no errors present: Red LED is ON, and Green LED is OFF. If there is an error, the LED code number and/or flash sequences.
And here are a full list of Lennox error codes you might attend when your furnace starts having problems.
- Red light is flashing quickly, and Green light is flashing slowly = Reversed polarity
What to do: Check electrical wiring. - Red light is flashing slowly, and Green light is flashing quickly = Low flame error.
What to do: Check the flame sense rod and flame sensor. Check the gas pressure. - Red light is flashing slowly, and Green light is solid = the High limit switch is open.
What to do: Check the furnace filter, check the blower wheel and ductwork. - Red light is off, and Green light is flashing slowly = Draft inducer or pressure switch failure.
What to do: Check the draft inducer; check the exhaust vent. - Red light is on, on, off and Green light is on, off, on = Circuit board failure.
What to do: Check the control panel or wiring. - Red and green lights alternating, flashing slowly = Flame failure
What to do: Check the pilot light or ignition sensor. - Red and green lights alternating, flashing quickly = Issue with voltage
What to do: It could be the improper main ground.
Lennox Allert Codes
The following are the most common Lennox alert code.
Allert Code | Troubleshooting Tip |
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error code 11 | The thermostat cannot find a previously installed system component.
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error code 31 | The applicable system component is resetting itself. This issue may occur during a power outage or power fluctuation in the system.
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error code 200 | The furnace roll out limit switch is open. Correct the cause of roll out trip.
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error code 201 | Lost communication with indoor blower motor. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. Problem may be on system component control or motor side. |
error code 204 | There is an issue with the furnace gas valve. |
error code 207 | The furnace hot surface igniter is open.
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error code 223 | The furnace low pressure switch is open. |
error code 224 | The furnace low pressure switch is stuck closed. |
error code 240 | Could be either low flame current or a loss of flame while in run mode. |
Lennox Error Code Lookup
You can also use Error Code Lookup App provided by Lennoxpros. It provides you with troubleshooting steps, instructions on how to clear the Lennox error code and determine if the situation is critical, moderate, or minor directly from a mobile device.
Lennox Error Code Lookup is available FREE to any technician who services Lennox products.
If you cannot read or troubleshoot the Lennox error codes, you should schedule an appointment to help determine your furnace problem.
Many furnace problems will require the help of a professional HVAC technician. In some cases, if an issue is not correctly solved, it can be more harmfull. If you aren’t a trained professional, it’s recommended that you consult an expert to address the Lennox furnace error codes.
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Mas Broto
Have been in the heating and air conditioning (HVAC) industry for over 20 years. He is person that will grow and thrive to learn more about the HVAC industry throughout his career. Mas Broto is also a blogger, who’s dedicated to bringing you the best knowledge to get ahead in the game of life.