Lennox SL22KLV Heat Pump Error Code 137: Incorrect Voltage Supply Detected

If your SL22KLV Lennox heat pump displays error code 137, it’s likely due to an incorrect voltage supply, which can prevent the furnace from functioning properly. This common issue can be resolved by checking the electrical supply, ensuring it’s active and stable, and verifying that the circuit breaker or fuse box hasn’t tripped a switch.

To fully understand Lennox furnace error codes and troubleshooting, take a closer look at the error codes and what they really mean for your furnace’s performance.

Understanding Lennox Furnace Error Codes

When troubleshooting your Lennox furnace, the first step is to understand what the error code is being displayed.

The blinking pattern of the LED light on the control board indicates the type of error code, and the speed of the blinking light provides additional information.

You’ll find the error code list on the furnace, where the blinking pattern corresponds to a specific code, such as E201 or E292.

These codes correspond to specific issues, like lost communication with the indoor blower motor or a flame sensor out of sequence.

Also, Read: Lennox SL22KLV Heat Pump Error Code 135: Low System Refrigerant Charge Detected

What Does the Flashing Light on My Heater Mean?

When you notice a flashing light on your heater, you’re likely wondering what it’s trying to tell you.

The light patterns, flashing codes, and signals all convey specific information about your furnace’s operation or any issues it’s experiencing.

Furnace Light Patterns

Your Lennox heat pump’s flashing light can be an unsettling mystery, but deciphering its code is key to identifying and resolving the issue.

The control panel’s light flashes are a language that, once understood, will help you troubleshoot the error.

• Steady flash: Indicates a normal operating mode.
• Rapid flash: Signals a fault or error code.
• Alternating flash: Indicates a low refrigerant level or a faulty compressor.
• No flash: May indicate a power supply issue or a faulty control panel.

Heater Flashing Codes

The flashing light on your Lennox heat pump is a diagnostic tool that can help you identify and resolve issues. To guarantee accurate diagnosis, you must comprehend the heater flashing codes.

When you see the flashing pattern, refer to the error code and take necessary action. Verify the voltage supply is within the recommended range. If the issue persists, to confirm accurate resolution, contact a professional technician for assistance.

Furnace Light Signals

Flashing furnace lights can be a cryptic message, but decoding them is essential to identifying and resolving problems.

You need to understand what the light is trying to tell you.

• Steady light: The furnace is operating normally.
• Flashing light: There’s an issue, and you should check the error code.
• Rapid flashing: The furnace has detected a critical fault, and you should switch it off.
• No light: There’s a power issue or a faulty light circuit.

Check your furnace manual or contact a professional for assistance if you’re unsure what the light signal indicates.

Also, Read: Lennox SL22KLV Heat Pump Error Code 134: Thermostat Error Detected

Furnace Won’t Start

If your furnace refuses to start, you’re likely dealing with one of three common culprits: no electricity present, a rollout switch failure, or polarity reversed power.

You’ll need to investigate each possibility to identify the source of the problem. Start by checking your circuit breaker or fuse box to confirm you haven’t simply tripped a switch.

No Electricity Present

You’re dealing with a Lennox heat pump error code indicating no electricity present, effectively stalling your furnace from starting.

This error code, 137, is related to incorrect voltage supply.

• Check the circuit breaker or fuse box to guarantee it hasn’t tripped or blown a fuse.
• Verify that the electrical supply is active and stable.
• Certify that all wiring to the heat pump are secure and intact.
• Consult a licensed electrician or HVAC technician if you’re unsure about voltage-related issues, as they can pose safety risks.

Rollout Switch Failure

When the Lennox heat pump error code 137’s voltage issues are ruled out, another common problem arises: rollout switch failure, preventing the furnace from starting altogether.

You’ll need to inspect the rollout switch, usually located near the furnace. Check for signs of damage, corrosion, or wear. A faulty rollout switch won’t allow the furnace to start, and identifying and replacing the rollout switch if you find a fault is crucial.

Polarity Reversed Power

A miswired furnace is a common culprit behind Lennox heat pump error code 137, and polarity reversed power is a prime suspect.

You might be wondering how this happens. Well, faulty wiring can cause the polarity of your power supply to flip, leading to a range of issues, including a furnace that won’t start.

Here are some common signs of polarity reversed power:

• Flickering lights: If your lights are flickering, it’s likely a sign that your power supply is out of whack.
• Electrical humming: Unusual humming sounds from your electrical components can indicate reversed polarity.
• Overheating components: Reversed polarity can cause components to overheat, leading to premature failure.
• Frequent circuit breaker trips: If your circuit breaker is tripping frequently, it could be a sign of polarity reversed power.

Also, Read: Lennox SL22KLV Heat Pump Error Code 132: Low Outdoor Temperature Triggering Freeze Protection Mode

Furnace Blower Operates But No Warmth

How frustrating is it that the blower operates just fine, but fails to produce any warmth?

You’ve checked the power supply, verified polarity isn’t reversed, and the furnace blower is spinning smoothly. Yet, you’re left shivering in the cold air.

This symptom often indicates a faulty heating element or a malfunctioning control board.

You might need to inspect the circuit breaker or fuse box to rule out any tripped breakers or blown fuses.

Additionally, inspect the thermostat settings to confirm it’s set to “cool” mode or an incorrect temperature setting.

If you’re still unsure, it may be time to seek professional assistance to diagnose and rectify the issue.

Turn to Us for Expert Furnace Repair

During those cold winter nights, you’re left frustrated and helpless with a malfunctioning furnace.

Don’t let the chill get to you – our expert technicians are just a call away. We specialize in furnace repair and will have your home warm and cozy in no time.

The benefits of choosing us for your repair needs include:

• Prompt Service: We recognize the urgency of a faulty furnace, so we guarantee quick response times to get your heat back on.
• Skilled Technicians: Our team is trained and certified to handle even the most complex repair jobs.
• Competitive Pricing: We offer transparent and affordable rates, ensuring you get quality service without breaking the bank.
• Customer Satisfaction: Your satisfaction is our top priority, and we aim to deliver exceptional service that exceeds your expectations.

Also, Read: Lennox SL22KLV Heat Pump Error Code 131: Refrigerant Leak Detected in System

Lennox Mini Split Error Codes and What They Mean

When troubleshooting your Lennox mini-split system, you’ll likely encounter error codes E1, E5, E6, or P4.

These codes indicate specific issues, such as communication breakdowns, voltage problems, or temperature sensor malfunctions.

Understanding what these codes mean is vital to resolving the issue efficiently and effectively.

Common Error Codes

Your Lennox mini-split system relies on seamless communication and precise functioning of its components to provide efficient heating and cooling.

When something goes wrong, error codes appear, indicating the common issues you might encounter:

• E1 – Breakdown in communication between indoor and outdoor units, requiring confirmation of settings or power cycling the system.
• E5 – Voltage protection or temperature sensor malfunction, necessitating monitoring of temperature inconsistencies and testing of voltage levels.
• E6 – Communication issue between indoor and outdoor units or malfunctioning temperature sensor, requiring power cycling, checking wiring connections, and ensuring condensate pumps function correctly.
• P4 – Concerns about the compressor drive or high temperature issues, potentially related to discharge line temperature, requiring checking for abnormal inverter compressor drive, IPM malfunction, faulty outdoor fan assembly, and wrong voltage applied or power surge.

These error codes will help you identify and troubleshoot common issues with your Lennox mini-split system.

Communication Issues

In addition to the common error codes, your Lennox mini-split system may experience communication issues, hindering its ability to provide efficient heating and cooling.

If you encounter an E1 error code, it signifies a breakdown in communication between the indoor and outdoor units, requiring you to confirm settings or power cycle the system.

An E6 error code indicates a communication issue or malfunctioning temperature sensor, necessitating you to power cycle the system, check wiring connections, and verify condensate pumps function correctly.

If the error persists, contact a professional. These communication issues can substantially impact your system’s performance, so prompt attention is crucial to guarantee a stable voltage supply and overall system operation.

Voltage Problems

Two key voltage-related issues can trigger error codes on your Lennox mini-split system.

First, incorrect voltage supply can cause issues, as seen in error code 137 on the SL22KLV.

Second, voltage fluctuations can trigger protective measures, leading to error codes.

Some common error codes related to voltage issues include:

1. E1, E5, E6, P4, or P6, each requiring specific troubleshooting and potentially professional assistance.

When dealing with voltage problems, it is crucial to check the power source, inspect wiring, and test voltage levels to resolve the issue.

Also, Read: Lennox SL22KLV Heat Pump Error Code 130: Inverter Board Malfunction Detected

Understanding Mini Split Error Codes

When troubleshooting your mini-split unit, error codes become a crucial aspect of identifying and addressing issues promptly.

You’ll need to understand what these codes mean to resolve problems efficiently. Error codes aren’t universal across mini-split systems, making it necessary to consult your specific model’s manual or the manufacturer’s website for accurate troubleshooting.

Voltage-related issues, like incorrect voltage supply or voltage protection, can trigger specific error codes.

For instance, the E5 code may indicate temperature sensor malfunction or voltage inconsistencies.

Addressing such issues involves monitoring temperature inconsistencies, testing voltage levels, and seeking professional advice if the error persists.

Regular Maintenance and Prevention for Mini Splits

You’ve addressed error codes, now it’s time to focus on preventing issues from arising in the first place.

Regular maintenance is critical for your mini-split system‘s peak performance and longevity.

By performing routine tasks, you can identify potential problems before they become major issues.

• Clean air filters and coils to guarantee adequate airflow and prevent overheating.
• Inspect for uncommon odors, noises, and signs of damage, which may indicate mold, animal remains, or electrical problems.
• Check for refrigerant leaks, sensor issues, and drainage problems that can lead to inefficient performance.
• Schedule biannual professional checkups to sustain peak system performance, enhance longevity, and improve efficiency.

Also, Read: Lennox SL22KLV Heat Pump Error Code 129: Communication Failure Between Thermostat and Unit

Seeking Professional Help for Mini Split Repair

If your mini-split system is malfunctioning, it’s essential that you don’t attempt to repair it yourself, as this can lead to further damage or even safety hazards.

Instead, seek professional help from a certified technician who’s familiar with Lennox heat pump models like the SL22KLV.

They’ll have access to a troubleshooting guide and the necessary expertise to diagnose and fix the issue.

Don’t risk voiding your warranty or causing more harm to your system.

Let a pro take care of it.

They’ll get your mini-split up and running efficiently in no time, and you can rest assured that the job will be done correctly and safely.

Locating the Furnace Error Code

The error code on your Lennox heat pump is typically displayed on the unit’s control panel or thermostat.

To locate the furnace error code:

• Check the control panel: Look for a digital display showing the error code.
• Inspect the thermostat: Verify the thermostat is set to “heat” mode and check for any error code display.
• Consult the user manual: Refer to the manual for specific instructions on locating the error code on your Lennox heat pump model.
• online resources: Visit the manufacturer’s website or online forums for guidance on finding the error code.

Also, Read: Lennox SL22KLV Heat Pump Error Code 128: Indoor Fan Motor Failure Detected

Frequently Asked Questions

How Do I Clear My Lennox Error Code?

To clear your Lennox error code, you’ll need to perform a voltage check to verify the power supply meets the recommended specifications. Then, power cycle the system by turning it off and back on to clear the error code.

How to Fix Lennox E227 Error Code?

You’re facing the E227 error code, and you’re wondering what’s going on. It’s likely due to voltage issues, similar to incorrect supply problems, but don’t worry, you’ll get it fixed by checking your voltage supply, wiring, and circuit breakers.

How to Read Lennox Error Code?

You’ll need to check your heat pump’s voltage requirements and perform power supply checks to read Lennox error codes, ensuring the unit’s electrical supply matches its specifications to prevent issues like incorrect voltage supply errors.

How Do You Reset a Lennox Heat Pump?

Oh, you’re stuck in a never-ending cycle of Summer operation and Heat mode frustration? Don’t sweat it! To reset your Lennox heat pump, simply press and hold the Reset’ button for 5 seconds, then release – but don’t forget to turn off the power first!

Conclusion

When your Lennox heat pump model SL22KLV flashes error code 137, it’s like a warning light on your car’s dashboard – it’s trying to tell you something’s amiss. In this case, it’s an incorrect voltage supply. Don’t ignore it; instead, take action to address the issue. Follow the troubleshooting guide to identify and fix the problem, or seek professional help to get your heat pump running smoothly again.