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If you have a Generac PWRcell solar system, you may have encountered a Pvrss lockout error on your inverter screen.
This error means that your solar panels are not producing any power due to a malfunction in the photovoltaic rapid shutdown system (PVRSS).
In this blog post, we will explain what PVRSS is, why it is important, what causes the Pvrss lockout error, and how to fix it.
What is PVRSS and Why is it Important?
PVRSS stands for photovoltaic rapid shutdown system. It is a safety feature that allows firefighters to quickly and easily turn off the power from the solar panels in case of a fire or emergency.
PVRSS consists of two main components: the PV links and the SnapRS units.
The PV links are devices that connect the solar panels to the inverter. The SnapRS units are devices that attach to the PV links and communicate with the inverter wirelessly.
When the inverter detects a fire or emergency signal, it sends a command to the SnapRS units to disconnect the power from the solar panels.
This reduces the voltage and current from the solar array to a safe level, so that firefighters can safely access the roof and perform their duty.
PVRSS is required by the 2017 and 2020 National Electrical Code (NEC) for all new solar installations in the United States.
PVRSS helps to prevent electric shock hazards, arc flash incidents, and fire spread caused by live wires or faulty equipment.
PVRSS also helps to protect the solar system from damage due to overvoltage or overcurrent.
What Causes the Pvrss Lockout Error?
The Pvrss lockout error occurs when the inverter detects a malfunctioning or overheating SnapRS unit in the solar panels.
When this happens, all the solar panels go into “lockout mode” and no solar energy is generated until the lockout is cleared by a service technician.
The Pvrss lockout error is indicated by a state code 7310 or PVRSS LO on the inverter screen.
There are several possible causes for the Pvrss lockout error, such as:
- Defective or damaged SnapRS units
- Loose or corroded wiring connections
- Interference from other wireless devices
- Extreme weather conditions
- Improper installation or configuration
How to Fix the Pvrss Lockout Error?
The Pvrss lockout error can be fixed by replacing or removing the faulty SnapRS units. However, this is not a simple DIY task, as it involves working with high-voltage equipment and accessing the roof.
Therefore, it is recommended to contact a qualified service technician or your solar installer to perform the repair. Depending on the warranty and the contract, you may be eligible for a free or discounted service.
To fix the Pvrss lockout error, the service technician will need to do the following steps:
- Disable the inverter and turn off all photovoltaic breakers
- Locate and identify the faulty SnapRS unit(s) using the inverter’s diagnostic tools
- Replace the faulty SnapRS unit(s) with new ones, or remove them altogether
- Re-enable each individual PV link without PVRSS enabled, which can be done in the Mod Settings of each PV link
- Enable the inverter and turn on all photovoltaic breakers
- Verify that the solar system is working properly and the Pvrss lockout error is cleared
RECOMMENDED READ:- How To Fix The Generac Pwrcell Error Code 7000
Frequently Asked Questions
1: What is the difference between PVRSS and rapid shutdown?
PVRSS is a type of rapid shutdown system that meets the requirements of the 2017 and 2020 NEC. Rapid shutdown is a general term that refers to any system that can quickly and safely disconnect the power from the solar panels in case of a fire or emergency.
2: How do I know if I have a Pvrss lockout error?
You can check the inverter screen for a state code 7310 or PVRSS LO message. You can also use the Mobile Link app or the PWRview web portal to monitor the status of your solar system and receive alerts if there is an error.
3: How often does the Pvrss lockout error occur?
The Pvrss lockout error is not a common occurrence, but it can happen due to various factors, such as defective or damaged SnapRS units, loose or corroded wiring connections, interference from other wireless devices, extreme weather conditions, or improper installation or configuration.
4: How long does it take to fix the Pvrss lockout error?
The time it takes to fix the Pvrss lockout error depends on the availability of the service technician, the number of faulty SnapRS units, and the complexity of the repair. Generally, it can take anywhere from a few hours to a few days to fix the error and restore your solar power.
5: How much does it cost to fix the Pvrss lockout error?
The cost of fixing the Pvrss lockout error depends on the warranty and the contract that you have with your solar installer or service provider. Depending on the terms and conditions, you may be eligible for a free or discounted service. You can contact your service provider to find out more about the cost and the coverage of the service.
The Pvrss lockout error is a common problem that affects Generac PWRcell solar systems. It is caused by a malfunction in the photovoltaic rapid shutdown system (PVRSS), which is a safety feature that allows firefighters to turn off the power from the solar panels in case of a fire or emergency.
The Pvrss lockout error can be fixed by replacing or removing the faulty SnapRS units, but this requires the assistance of a qualified service technician or your solar installer. If you encounter the Pvrss lockout error, do not panic, but contact your service provider as soon as possible to restore your solar power.