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 chance your mini split could malfunction. To identify what went wrong, you should locate where the mini split error codes are displayed. Recognizing what these codes mean can help you kickstart mini split repair, especially if professional help is necessary.
What each code means will ultimately rely on the specific model of your mini split system. You can consult your manual for a guide for what each code means. You can also call the HVAC pros at Anderson Heating & A/C. Our technicians are trained to recognize these codes in order to deliver prompt mini split repair in Carson City. Give us a call at 775-230-7628 to book 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 see. To determine 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 handful 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 hampered. It may be facing 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 could refer to a problem with the system’s voltage. A repair technician from Anderson Heating & A/C may refer to it as overcurrent protection. Both excessively high or low voltage can result in this error code.
For mini split air conditioners, this code may also represent 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, like 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 faulty, the most likely cause is excessively high temperatures. A high temperature at the discharge line may also result in 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 faulty, 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 can 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 have a guide for these error codes and what they should mean. But as many of these codes start with electrical problems, professional experience is typically required.
Call Anderson Heating & A/C for Mini Split Repair
Anderson Heating & A/C 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 Carson City, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 775-230-7628 today.