Lennox mini split systems are an excellent way to provide compact, yet powerful temperature control for your home. Some models are built for air conditioning only, while heat pump models can offer both heating and cooling.
But no ductless mini split is flawless. There’s always a chance your mini split could malfunction. To find out what happened, you should locate where the mini split error codes are displayed. Recognizing what these codes refer to can help ensure fast mini split repair, especially if professional help is necessary.
What the error code means will ultimately rely on the specific model of your mini split system. You can review your manual for a guide for what each code means. You can also trust the HVAC pros at Halverson Brothers Inc. Our technicians are trained to learn these codes in order to deliver prompt mini split repair in Menomonie and western Wisconsin. Give us a call at 715-352-4052 to schedule an appointment.
Common Lennox Mini Split Error Codes
While error codes may differ from model to model, there are some codes you’ll be more likely to encounter. To determine what your error code could mean, ask yourself the following:
- Is your system a mini split air conditioner or a mini split heat pump?
- Are there clear signs of what is happening? A strange noise coming from a specific component, for example.
Here are a few 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 hampered. It may be facing intermittent connection issues or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will be unable to adequately balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini split heat pump, an E5 error can indicate a problem with the system’s voltage. A repair technician from Halverson Brothers Inc may refer to it as overcurrent protection. Both very high or low voltage can produce 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 may also be a problem with one of the temperature sensors.
P4 – Compressor Drive Error / High Temperature
A P4 error code will most times be concerned with your mini splits compressor system, found within the outdoor unit. When the compressor drive is not working, the most likely culprit is excessively high temperatures. A high temperature at the discharge line could also lead to a P4 code.
P6 – Compressor Switch Open or Drive Board Failure
Your mini split system will have computer boards that make sure the indoor and outdoor units can communicate with one another. If the drive board is damaged, 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 experiencing high or low pressure concerns.
Review the Manual for Your Specific Model
Don’t forget that in general, error codes are different for each model of a Lennox mini split system. Your manual will offer a guide for these error codes and what they can mean. But because many of these codes stem from electrical problems, professional experience is often necessary.
Call Halverson Brothers Inc for Mini Split Repair
Halverson Brothers Inc 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 specific 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 Menomonie and western Wisconsin, bringing your new system online with little to no comfort disruption.
To schedule an appointment, give us a call at 715-352-4052 today.