E
Erica RobinsonAug 20, 2025
What to do if my Lennox Heat Pump has low refrigerant?
- AAndrea ColemanAug 20, 2025
If your Lennox Heat Pump has low refrigerant, check for leaks and recharge the system if necessary.
To Next PageTo Next PageWhat to do if my Lennox Heat Pump has low refrigerant?
If your Lennox Heat Pump has low refrigerant, check for leaks and recharge the system if necessary.
Why is there a high temperature sensed at the compressor top of my Lennox Heat Pump?
If a high temperature is sensed at the compressor top of your Lennox Heat Pump, check the refrigerant level and airflow.
How to fix high or low voltage protection error in Lennox Heat Pump?
To address a high or low voltage protection issue in your Lennox Heat Pump, ensure that the voltage levels are within the specified range.
What to do if my Lennox Heat Pump (ducted unit) has a high water level alarm?
If your Lennox Heat Pump (ducted unit) is showing a high water level alarm, clear any blockage in the drain line.
How to troubleshoot communication error between indoor and outdoor units in Lennox Heat Pump?
To troubleshoot a communication error between the indoor and outdoor units of your Lennox Heat Pump, verify the communication wiring.
What causes outdoor current overload in Lennox Heat Pump?
If an outdoor current overload is sensed in your Lennox Heat Pump, examine the outdoor unit for mechanical issues.
What to do if my Lennox Heat Pump shows a compressor drive error?
If your Lennox Heat Pump is showing a compressor drive error, check the compressor wiring.
How to fix indoor fan speed error in Lennox Heat Pump?
If you're experiencing an indoor fan speed error with your Lennox Heat Pump, inspect the fan and control settings.
What to do if my Lennox Heat Pump has an outdoor unit fan speed error?
If your Lennox Heat Pump is displaying an outdoor unit fan speed error, inspect the fan operation.
What should I do if the high or low pressure switch is open on my Lennox Heat Pump?
If the high or low pressure switch is open on your Lennox Heat Pump, test the pressure switches.
General| Brand | Lennox |
|---|---|
| Model | MLB Series |
| Category | Indoor Furnishing |
| Language | English |
General installation guidance and disclaimer about local codes and refrigerant.
Lists all components included in the indoor and outdoor unit packages for installation.
Explains model numbering and compatible indoor/outdoor unit combinations.
Provides dimensional diagrams and specifications for outdoor and indoor units.
Shows dimensions and mounting details for indoor unit wall plates.
Specifies minimum required clearances for outdoor and indoor units for proper operation.
Guidelines for indoor unit placement, wall plate location, and mounting.
Instructions for correctly connecting and ensuring proper drainage of the indoor unit condensate line.
Guidance on outdoor unit placement, protection from elements, and securing methods.
Steps for making refrigerant line connections, including pipe sizing, flaring, and insulation.
Procedure for leak testing and evacuating the refrigerant system to remove non-condensables and moisture.
Step-by-step guide for performing a triple evacuation to ensure system purity.
Instructions and diagrams for electrical wiring connections and system diagrams.
Essential pre-energization checks and steps to safely start up the HVAC unit.
Guidance on calculating and adding extra refrigerant for extended line sets.
Explanation of I-Clean, Test Run, Dry Mode, Humidity Control, and Intelligent Eye.
