Lennox mini-split systems are a great way to provide compact, yet effective temperature control for your home. Some models are built for air conditioning only, while heat pump models can provide both heating and cooling.
But no ductless mini-split is flawless. There’s always a risk your mini-split can malfunction. To find out what happened, you should locate where the mini-split error codes are displayed. Understanding what these codes refer to can help you kick-start mini-split repair, especially if professional help is necessary.
What the error code means will ultimately depend on the specific model of your mini-split system. You can consult your manual to find a guide for what each code means. You can also trust the HVAC pros at West Michigan Heating & Air Conditioning Services. Our technicians are trained to recognize these codes in order to ensure prompt mini-split repair in Hudsonville. Give us a call at (616) 319-1436 to schedule an appointment.
Common Lennox Mini-Split Error Codes
While error codes can differ from model to model, there are some codes you’ll be more likely to encounter. To determine what your error code may mean, consider the following:
Is your model a mini-split air conditioner or a mini-split heat pump?
Are there additional signs of what malfunctioned? A strange noise coming from an important component, for example.
Here are a handful of the more common error codes for Lennox mini-splits.
E1 – Indoor / Outdoor Unit Communication
In general, an E1 error code indicates that communication between the mini-split system’s indoor and outdoor units has been disrupted. It might be struggling with intermittent connection issues or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will be unable to properly balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini-split heat pump, an E5 error could refer to a problem with the system’s voltage. A repair technician from West Michigan Heating & Air Conditioning Services may refer to it as overcurrent protection. Both very high or low voltage can result in this error code.
For mini-split air conditioners, this code can also stand for voltage issues. In other cases, it’s pointing you to a circuit problem with the outdoor temperature sensor.
E6 – Indoor / Outdoor Unit Communication
An E6 error code can also refer to a communication problem between the two units, similar to an E1 code. It could also be an issue with one of the temperature sensors.
P4 – Compressor Drive Error / High Temperature
A P4 error code will most times be connected to your mini-splits compressor system, housed within the outdoor unit. When the compressor drive is not working, the most likely cause is excessively high temperatures. A high temperature at the discharge line may also trigger a P4 code.
P6 – Compressor Switch Open or Drive Board Failure
Your mini-split system will have computer boards that ensure the indoor and outdoor units can communicate with one another. If the drive board is malfunctioning, a P6 error code is common.
When temperatures rise above safe levels, a safety switch will protect the electrical components of your mini-split system, including any components that manage the outdoor compressor. If this switch is open, the P6 code may appear. You may also find the P6 code if the compressor is facing high or low pressure concerns.
Check the Manual for Your Specific Model
Remember that in general, error codes are different for each model of a Lennox mini-split system. Your manual will provide a guide for these error codes and what they can mean. But because many of these codes start with electrical problems, professional experience is usually needed.
Call West Michigan Heating & Air Conditioning Services for Mini-Split Repair
West Michigan Heating & Air Conditioning Services can deliver fast and affordable ductless mini-split repair. Whether you own a mini-split AC system or a mini-split heat pump, our technicians can quickly identify your unique problem.
For some problems, repairs may not be worth it. But that doesn’t mean the mini-split replacement process has to be stressful. We can provide equally effective mini-split installation in Hudsonville, bringing your new system online with little to no comfort disruption.
To schedule an appointment, give us a call at (616) 319-1436 today.