What to do if my Lennox Air Conditioner shows an indoor return air temperature sensor error?
- JJudith HamptonSep 12, 2025
If your Lennox Air Conditioner indicates an indoor return air temperature sensor error, examine the sensor and its connections.
What to do if my Lennox Air Conditioner shows an indoor return air temperature sensor error?
If your Lennox Air Conditioner indicates an indoor return air temperature sensor error, examine the sensor and its connections.
What to do if my Lennox Air Conditioner has low refrigerant?
If your Lennox Air Conditioner has low refrigerant, add refrigerant according to system specifications.
What to do if my Lennox MWMA018S4-*P Air Conditioner has high or low voltage protection error?
If your Lennox Air Conditioner displays a high or low voltage protection error, verify the voltage supply levels and correct if required.
How to fix communication error between indoor and outdoor unit in Lennox MWMA018S4-*P?
To address a communication error between the indoor and outdoor units of your Lennox Air Conditioner, check the communication wiring and connections.
What to do if my Lennox MWMA018S4-*P Air Conditioner has a high water level alarm?
If your Lennox Air Conditioner is showing a high water level alarm, clear any blockage from the drain system.
How to reset outdoor current overload on Lennox Air Conditioner?
If your Lennox Air Conditioner senses an outdoor current overload, reset the overload protection if it has tripped.
What to do if my Lennox Air Conditioner has an outdoor coil temperature sensor error?
If your Lennox Air Conditioner shows an outdoor coil temperature sensor error, inspect and verify the sensor's condition.
How to fix indoor coil temperature sensor error in Lennox Air Conditioner?
To address an indoor coil temperature sensor error in your Lennox Air Conditioner, check temperature sensor functionality.
How to troubleshoot IPM error on Lennox MWMA018S4-*P inverter module?
To troubleshoot an IPM error on your Lennox Air Conditioner's inverter module, examine the inverter module and replace it if necessary.
What to do for compressor pressure switch issues in Lennox MWMA018S4-*P Air Conditioner?
If your Lennox Air Conditioner has a compressor high-pressure or low-pressure switch open, investigate system pressures and correct abnormalities.
Cooling Capacity | 18, 000 BTU/h |
---|---|
SEER | 20 |
HSPF | 10 |
Voltage | 208/230V |
Phase | 1 |
Refrigerant Type | R-410A |
Details on how to identify outdoor unit model numbers for single and multi-zone systems.
Technical specifications for MPA single-zone outdoor units, covering capacities from 0.75 to 1.5 Ton.
Technical specifications for MPA single-zone outdoor units, covering capacities from 2.0 to 4.0 Ton.
Technical specifications for MPB single-zone outdoor units, covering capacities from 0.75 to 1.5 Ton.
Technical specifications for MPB single-zone outdoor units, covering capacities from 2 to 4 Ton.
Technical specifications for MLA single-zone outdoor units, covering capacities from 0.75 to 2 Ton.
Technical specifications for MPA multi-zone outdoor units, covering capacities from 1.5 to 2.5 Ton.
Technical specifications for MPA multi-zone outdoor units, covering capacities from 3 to 4 Ton.
Technical specifications for MPB multi-zone outdoor units, covering capacities from 1.5 to 2.5 Ton.
Technical specifications for MPB multi-zone outdoor units, covering capacities from 3 to 4 Ton.
Technical specifications for MLA multi-zone outdoor units, covering capacities from 1.5 to 3 Ton.
Specifies the required minimum clearances around outdoor units for proper ventilation and installation.
Details the technical specifications for M22A cassette indoor units, including capacity and electrical data.
Details the technical specifications for M33A and M33B cassette indoor units, including capacity and electrical data.
Details the technical specifications for MMDA ducted indoor units, including capacity and electrical data.
Details specifications for MWMA/MWMB units from 0.75 to 1 Ton, including capacity and electrical data.
Details specifications for MWMA/MWMB units from 1.5 to 2.5 Ton, including capacity and electrical data.
Explains the model number structure for MCFA and MCFB ceiling/floor indoor units.
Details specifications for MCFA/MCFB units from 1.5 to 4 Ton, including capacity and electrical data.
Illustrates the refrigerant cycle for MPA and MPB single-zone systems.
Illustrates the refrigerant cycle for MPA and MPB two-zone systems.
Illustrates the refrigerant cycle for MPA and MPB three-zone systems.
Illustrates the refrigerant cycle for MPA and MPB four-zone systems.