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 offer both heating and cooling.
But no piece of HVAC equipment is flawless. There’s always a possibility your mini-split will malfunction. To determine what went wrong, 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 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 trust the HVAC pros at Gopher Heating and Air Conditioning. Our technicians are trained to recognize these codes in order to deliver prompt mini-split repair in Savage. Give us a call at 952-373-0377 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 come across. To identify what your error code can 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 strange noise coming from a key 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 signifies that communication between the mini-split system’s indoor and outdoor units has been impeded. It may 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 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 Gopher Heating and Air Conditioning may refer to it as overcurrent protection. Both unusually high or low voltage can create 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 may 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, housed within the outdoor unit. When the compressor drive is malfunctioning, the most likely reason 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 make sure the indoor and outdoor units can communicate with one another. If the drive board is malfunctioning, 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 facing 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 since many of these codes stem from electrical problems, professional experience is typically required.
Call Gopher Heating and Air Conditioning for Mini-Split Repair
Gopher Heating and Air Conditioning 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 identify your unique 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 Savage, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 952-373-0377 today.