Lennox air troubleshooting

Troubleshooting advice that you see below was provided by the intercontinental company Lennox International Inc. The manufacturer of HVAC systems gives expert explanations of the easiest ways to solve the most common problems that occur with its air conditioners. If there’s something wrong with your home appliance, try these solutions and the need to call for service may disappear.

Lennox GCM Series air troubleshooting

CaseExplanation
The air conditioner does not operate.• Have you made a mistake in timer operation?
• Has the fuse blown or has the circuit breaker been tripped?
The room has a peculiar odor.• Check that this is not a damp smell exuded by the walls, carpet, furniture, or cloth items in the room.
It seems that condensation is leaking from the air conditioner.• Condensation occurs when the airflow from the air conditioner cools the warm room air.
Air conditioner does not operate for about 3 minutes when restarted.• This is the protector of the mechanism.
• Wait about three minutes and operation will begin.
Does not cool or heat effectively.• Is the air filter dirty?
• Has the temperature been set incorrectly?
• Are the indoor unit's air inlet or outlet vents obstructed?
The air conditioner operation is noisy.• For a noise that sounds like water flowing. -This is the sound of freon flowing inside the air conditioner unit.
• For a noise that sounds like the compressed air releasing into atmosphere.
• This is the sound of the dehumidifying water being processed inside the air conditioning unit.
Remote control display is faint, or no display at all.• Are the batteries depleted?
• Are the batteries inserted in the opposite (+) and (-) directions?
Crack sound is heard.• This sound is generated by the expansion/constriction of the front panel, etc. due to changes of temperature.

Lennox Swing air troubleshooting

Setting Change is Impossible
SymptomsCausesReason and Disposal
The fan speed can not be changed.• Check whether the MODE indicated on the display is "AUTO"When the automatic mode is selected, the air conditioner automatically selects the fan speed.
• Check whether the MODE indicated on the display is "DRY"When dry operation is selected. The air conditioner automatically select the fan speed. The fan speed can be selected during "COOL" and "FAN ONLY", and "HEAT'
The Transmission Indicator "A" Never Comes On
SymptomsCausesReason and Disposal
The remote control signal is not transmitted even when the ON/OFF button is pushed.• Check whether the batteries in the remote controller are exhausted.• The remote control signal is not transmitted, because the power supply is off.
The Display Never Comes On
SymptomsCausesReason
The TEMP, indicator does not come on.• Check whether the MODE indicated on the display is "FAN ONLY". FAN ONLYThe temperature cannot be set during fan only operation.
The Display Goes Off
SymptomsCausesReason
The indication on the display disappears after a lapse of time.• Check whether the timer operation has come to an end when the OFF TIMER is indicated on the display.The air conditioner operation stops since the set time elapsed.
The ON TIMER indicators go off after a lapse of certain time.• Check whether the timer operation is started when the ON TIMER is indicated on the display.When the time set to start the air conditioner is reached, the air conditioner will automatically start and the appropriate indicator will go off.
The Signal Receiving Tone does Not Sound
SymptomsCausesDisposal
No receiving tone sounds from the indoor unit even when the ON/OFF button is pushed.• Check whether the signal transmitter of the remote controller is properly directed to the receiver of the indoor unit when the ON/OFF button is pushed.Direct the signal transmitter of the remote controller to the receiver of the indoor unit, and then repeatly push the ON/ OFF button twice.
Buttons on the remote controller don't work.Press Reset button.

Lennox DUCTAIR II air troubleshooting

TroubleCauseSolutions
Unit does not startPower failureWait for the comeback of power
Power switch is open.Switch on the power
Fuse of power switch may have blownReplace the fuse
Batteries of remote controller are exhaustedReplace the batteries
The time si not start-up time you have set.Wait or cancel the time set
Air flowing normally with low cooling (heating) effectTemperature is not set correctlySet the temperature properly
Door or window is openClose door or window
Air filter is blocked with dust or dirtinessClean the air filter
Inlet/oultet of indoor/outdoor units are blockedClear all blockages, the restart the operation
Be in 3 minutes protection of compressorWait
Can not change the fan speed settingCheck if the mode display on the LCD is AUTOThe Indoor unit will select fan speed automatically when AUTO mode is selected.
Check if the mode display on the LCD is DRYThe Indoor unit will select fan speed automatically when the unit is on DRY mode.
The transmission symbol does not flash
Press ON/OFF button, the remote controlling signals can not be transmittedCheck if the remote controller has run out of powerWhen the battery was out, transmission signals can not be sent.
Temperature display disappear
Temperature display does not lightCheck if the mode display on the LCD is FAN ONLYYou can not set the temperature when the unit is on FAN ONLY mode.
The display goes off
The indication on the display disappears after a lapse of time.Check wether the timer operation has come to an end when OFF TIMER is indicated on the display.The air conditioner operations stops since the set time elapsed.
The ON TIMER indicators go off after a lapse of certain timeCheck wether the timer operation is started when the ON TIMER is indicated on the display.When the time set to start the air conditioner is reached, the air conditioner will automatically start and the appropriate indicator will go off.
The signal receiving tone does not sound
No receiving tone sounds from the indoor unit even when the ON/OFF button is pushed.Check wether the signal transmitter of the remote controller is properly directed to the receiver of the indoor unit when the ON/OFF button is pushed.Direct the signal transmitter of the remote controller to the receiver of the indoor unit, and then repeatly push the ON/OFF button twice.
Buttons on the remote controller don’t work.Press reset button.

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