Lennox mini split systems are a solid 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 will malfunction. To determine what is malfunctioning, you should locate where the mini split error codes are displayed. Knowing what these codes mean can help ensure fast mini split repair, especially if professional help is needed.
What any code means will ultimately rely 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 contact the HVAC pros at H & H Service Company. Our technicians are trained to learn these codes in order to deliver prompt mini split repair in Mechanicsburg. Give us a call at 717-220-4502 to request an appointment.
Common Lennox Mini Split Error Codes
While error codes will differ from model to model, there are some codes you’ll be more likely to come across. To learn what your error code might mean, ask yourself the following:
- Is your model a mini split air conditioner or a mini split heat pump?
- Are there additional signs of what is happening? A loud noise coming from an important component, for example.
Here are some of the more common error codes for Lennox mini splits.
E1 – Indoor / Outdoor Unit Communication
In general, an E1 error code signifies that communication between the mini split system’s indoor and outdoor units has been impeded. It could be experiencing intermittent connection problems or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will not be able to effectively balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini split heat pump, an E5 error can stand for a problem with the system’s voltage. A repair technician from H & H Service Company may refer to it as overcurrent protection. Both excessively high or low voltage can create this error code.
For mini split air conditioners, this code could also represent 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, similar to an E1 code. It could also be a problem with one of the temperature sensors.
P4 – Compressor Drive Error / High Temperature
A P4 error code will usually be related 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 could also result in 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 faulty, a P6 error code is common.
When temperatures exceed safe levels, a safety switch should 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 can appear. You may also find the P6 code if the compressor is experiencing high or low pressure concerns.
Check the Manual for Your Specific Model
Keep in mind 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 as many of these codes start with electrical problems, professional experience is often needed.
Call H & H Service Company for Mini Split Repair
H & H Service Company can offer 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 diagnose 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 Mechanicsburg, bringing your new system online with little to no comfort disruption.
To schedule an appointment, give us a call at 717-220-4502 today.