Lennox mini split systems are an excellent 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 chance your mini split could malfunction. To find out what happened, you’ll want to locate where the mini split error codes are displayed. Understanding what these codes refer to can help ensure fast mini split repair, especially if professional help is required.
What any code means will ultimately depend 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 contact the HVAC pros at Brookwood Inc. Our technicians are trained to recognize these codes in order to ensure prompt mini split repair in Newton. Give us a call at 641-316-9803 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 come across. To identify what your error code could mean, ask yourself the following:
- Is your model a mini split air conditioner or a mini split heat pump?
- Are there clear signs of what malfunctioned? A loud 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 means that communication between the mini split system’s indoor and outdoor units has been impeded. It could be experiencing 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 can indicate a problem with the system’s voltage. A repair technician from Brookwood Inc may refer to it as overcurrent protection. Both unusually high or low voltage can produce this error code.
For mini split air conditioners, this code could also stand for voltage issues. In other cases, it’s alerting 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, like 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 related to your mini splits compressor system, found within the outdoor unit. When the compressor drive is faulty, the most likely cause is excessively high temperatures. A high temperature at the discharge line can also lead to 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 damaged, a P6 error code is common.
When temperatures exceed 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 could appear. You may also find the P6 code if the compressor is struggling with high or low pressure issues.
Consult 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 provide a guide for these error codes and what they should mean. But because many of these codes start with electrical problems, professional experience is usually necessary.
Call Brookwood Inc for Mini Split Repair
Brookwood Inc can provide 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 might 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 Newton, bringing your new system online with little to no comfort disruption.
To schedule an appointment, give us a call at 641-316-9803 today.