Lennox mini-split systems are a great way to provide compact, yet powerful 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 home comfort system is flawless. There’s always a possibility your mini-split will malfunction. To determine what went wrong, you’ll want to 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 necessary.
What the error code means will ultimately rely on the specific model of your mini-split system. You can review your manual to find a guide for what each code means. You can also call the HVAC pros at Gee & Missler Heating & Air Conditioning. Our technicians are trained to recognize these codes in order to ensure prompt mini-split repair in Wyandotte. Give us a call at 734-284-1224 to request 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 encounter. To determine what your error code could mean, consider 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 specific 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 means 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 Gee & Missler Heating & Air Conditioning may refer to it as overcurrent protection. Both very high or low voltage can result in this error code.
For mini-split air conditioners, this code may 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, like an E1 code. It might 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, 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 can 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 malfunctioning, 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 facing high or low pressure concerns.
Review the Manual for Your Specific Model
Don’t forget that in general, error codes are specific to each model of a Lennox mini-split system. Your manual will offer a guide for these error codes and what they should mean. But as many of these codes refer to electrical problems, professional experience is often necessary.
Call Gee & Missler Heating & Air Conditioning for Mini-Split Repair
Gee & Missler Heating & Air Conditioning 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 diagnose 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 Wyandotte, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 734-284-1224 today.