Solar Panel Faults
Dirt, dust and sand have built up on the top surface of the solar panel.
The top glass surface of the solar panel has cracked due to heat, wind, hail, vandalism or handling.
The solar panel has obtained very small cracks due to heat, wind or handling. These can be invisible.
Potential Induced Degradation. An unwanted electric field has built up between the solar panel and its metal frame due to heat and humidity, resulting in gradual performance decline.
A large amount of heat has collected in a small area resulting in a burnt or damaged spot on the solar panel. This is mostly due to cracks on the solar panel or shade.
The encapsulating layer between the solar panel and the top glass surface has discoloured due to UV radiation and other factors.
The encapsulating layer between the solar panel and the top glass surface has corroded due to UV radiation and other factors.
The encapsulating layer between the solar panel and the top glass surface has become detached due to water ingress in high humidity conditions.
Deformation and loose frames
The solar panel has deformed or its metal frame has loosened due to handling damage.
Bypass diode failure
One of the electrical components of a solar panel (the bypass diode) has failed due to heat, lightning or other factors.
All solar panels gradually degrade due to water corrosion, natural degradation of metals, and harsh sunlight.
Module open circuits
Electrical connections within the solar panel have lost their necessary contact due to cracks or deformation from hail, heat or other forces.
Module short circuits
Metals within the solar panel have come into contact and are conducting electricity incorrectly, due to weathering, cracking or electrical corrosion.
Junction box defect
The small black box on the back of the solar panel which houses electrical components has been damaged due to heat, lightning or water vapour.
Solar PV System Faults
The solar PV system is shaded by trees or roof obstructions resulting in lower than expected performance.
Low insulation resistance
The insulation in the solar PV system has decreased due to water ingress or there is leakage of current from the solar panels through an incorrect path. Also known as low riso
If the solar panels in the system have different performance profiles the whole electrically connected row of solar panels will have the current of the lowest performing panel in the system. This can lead to hotspot.
the current or voltage produced by the inverter is not consistent across various phases (segments) of the system.
Power factor issues
The current and voltage produced by the inverter are not consistent with one another.
The cable connections in the system have lost contact due to a damaged or loose connection.
The plugs connecting one solar panel to another have disconnected or failed.
An electrically connected group of solar panels has been disconnected due to cable disconnection or a tripped or blown fuse, switch or circuit breaker.
String fuse issue
One or more of the fuses on electrically connected groups of solar panels is faulty or has been turned off, disconnecting a number of solar panels.
DC isolator issue
One or more of the DC switches in the solar array is faulty or has been turned off, disconnecting a number of solar panels.
The power produced by the solar PV array is too high for the inverter, so the inverter cannot use all of the power and some is lost as heat.
The voltage produced by the solar PV system was too high for the inverter, resulting in inverter shutdown.
The current from the solar panels has taken an incorrect path due to a system defect. This resulted in inverter shutdown. Also known as ground fault, isolation fault.
AC disconnect open
The switch between the inverter and the electricity grid has been turned off, disconnecting the inverter from the electricity grid.
DC disconnect open
The switch between the solar panels and the inverter has been turned off, disconnecting the solar panels from the inverter.
The electrical grid that the solar PV system is connected to has shut down, shutting down the inverter.
the inverter housing has been opened, resulting in inverter shutdown.
The inverter was operating above the rated operational temperature, resulting in inverter shutdown.
The inverter was operating below the rated operational temperature, resulting in inverter shutdown.
Frequency above limit
The frequency of the electrical grid that the system is connected to was too high, resulting in inverter shutdown or export limitation.
Frequency under limit
The frequency of the electrical grid that the system is connected to was too low, resulting in inverter shutdown or export limitation.
The voltage of the electrical grid that the system is connected to was too high, resulting in inverter shutdown or export limitation.
The voltage of the electrical grid that the system is connected to was too low, resulting in inverter shutdown or export limitation.
Blown String fuse on inverter input
The current flowing from the solar PV system to the inverter was too high, therefore the fuse on the inverter has blown.
Inverter memory or communication error
There has been an internal memory or communication error in the inverter.
The inverter has aged and its performance has gradually declined due to vibrations in the core, degradation of electrical components or using the inverter above its rated limits.
The inverter has failed due to electrical component wear and tear, high temperatures or overuse.
MPPT tracking error
The inverter is not operating at the correct specifications and therefore it is not converting the maximum amount of energy from the solar panels into usable electricity.
Solar Analytics Specific Faults
Wifi, 3G or other communications fault.
Solar Smart Monitor incorrect wiring
The Solar Smart Monitor has been connected incorrectly.
Incorrect site configuration
The site configuration (number of inverters, panels, tilt, orientation etc) has been entered incorrectly in the Solar Analytics registration process.
Incorrect CT connection
The CT, which is connected to the Solar Smart Monitor and measures the energy produced by the system, has been clipped onto the wrong cable or clipped incorrectly.