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 deliver both heating and cooling.
But no piece of HVAC equipment is flawless. There’s always a chance your mini-split can malfunction. To find out what happened, 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 each code means will ultimately depend on the specific model of your mini-split system. You can check your manual for a guide for what each code means. You can also call the HVAC pros at Select Comfort Systems. Our technicians are trained to recognize these codes in order to provide prompt mini-split repair in West Valley City. Give us a call at 801-305-4777 to schedule an appointment.
Common Error Codes for Lennox Mini Splits
While error codes will differ from model to model, there are some codes you’ll be more likely to come across. To determine what your error code can mean, ask yourself the following:
Is your system a mini-split air conditioner or a mini-split heat pump?
Are there additional signs of what malfunctioned? A strange 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 signifies that communication between the mini-split system’s indoor and outdoor units has been disrupted. It might be struggling with 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 refer to a problem with the system’s voltage. A repair technician from Select Comfort Systems may refer to it as overcurrent protection. Both excessively high or low voltage can produce this error code.
For mini-split air conditioners, this code may also indicate 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 may also be a problem with one of the temperature sensors.
P4 – Compressor Drive Error / High Temperature
A P4 error code will most times be connected to your mini-splits compressor system, located within the outdoor unit. When the compressor drive is malfunctioning, the most likely culprit is excessively high temperatures. A high temperature at the discharge line could also trigger 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 rise above 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 experiencing high or low pressure concerns.
Check Your Manual for Specifics
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 typically required.
Contact Select Comfort Systems for Mini-Split Repair
Select Comfort Systems 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 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 West Valley City, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 801-305-4777 today.