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Macsolar Solar Inverter Fault & Error Messages
Error No.
Information
Message
Corresponding Action
0
Grid Vtg. Fault
View Message
The grid voltage has exceeded the permitted range according to local grid regulations.
View Corresponding Action
Following causes might lead to this error:
  • Grid voltage is too high or too low at the point of common coupling to the inverter.
  • Grid impedance at the terminal of the inverter is too high.
For safety consideration, the inverter will disconnect itself from the grid for a short period of time, and it will reconnect to the grid automatically after a short period of time if the grid voltage is back to the permitted range.
1
Grid Vtg.10min Fault
View Message
Following causes might lead to this error:
  • Grid voltage is too high at the point of common coupling to the inverter.
  • Grid impedance at the terminal of the inverter is too high.
For safety consideration, the inverter will disconnect itself from the grid for a short period of time, and it will reconnect to the grid automatically after a short period of time if the grid voltage is back to the permitted range.
View Corresponding Action
  • Check the grid voltage.
  • Check the grid connection of the inverter.
If the grid voltage exceeds the permitted range because of local grid conditions, please ask the utility operator if the voltage can be adjusted at the feed-in point or if changes in the values of the monitored operational possible. If the grid voltage that checked is within the permitted range, yet this error is still showing in the LCD screen, please contact service line.
2
Fac Fault
View Message
The grid frequency has left the permitted range. For safety consideration, the inverter will disconnect itself from the grid for a short period of time, and it will reconnect to the grid automatically after a short period of time if the grid frequency is back to the permitted range.
View Corresponding Action
  • Within safety scope, check the grid frequency and observe how often major deviations occur.
If there are repeated frequency turbulences which lead to this error, please ask the utility operator if modification of the operating parameter is possible. If this error is not solvable, please contact Macsolar Serviceline.
3
Utility Loss
View Message
The inverter has detected an error in the cabling and cannot connect to the grid.
View Corresponding Action
  • Check AC installation.
  • Check grid connection.
  • Check if the country setting is correct:
    • Via LCD screen (please refer to chapter 7.2 “Configuration”).
    • Via the remote communication: setting Parameter “Country”.
If this error is not solvable, please contact Macsolar Serviceline.
4
High DC Bus
View Message
The voltage of the Bus which paralleling connected with the string is too high. The following causes might lead to this error:
  • The DC input voltage connected to the inverter is too high.
  • Sudden DC surge. For safety consideration, the inverter will shutdown itself.
View Corresponding Action
  • Please disconnect the inverter from the PV strings (see chapter 6.5 “DC side Disconnection”) or else the inverter might be damaged.
  • Check the DC voltage of the strings for adherence to the maximum input voltage of the inverter, before you reconnect the inverter to the PV strings.
5
GFCI Fault
View Message
The inverter has detected a ground fault in the PV generator.
View Corresponding Action
  • The installer of the PV generator must solve the ground faults before you re-connect the strings. If this error is not solvable, please contact Macsolar Serviceline.
6
Over-temperature
View Message
The delivered power of the inverter was reduced below rated power because of abnormal temperature within 0.5s. Following causes might lead to this error:
  • At least one or more of the thermally monitored varistors are defective.
  • Overheating inside.
  • Not sufficient ventilation.
View Corresponding Action
If this event occurs often:
  • Please ensure sufficient ventilation.
  • Check the varistors.
If this error is not solvable, please contact Macsolar Serviceline.
7
Varistor Fault
View Message
At least one of the varistors from the DC or AC side is defected. Following causes might lead to this error:
  • Varistor is bust due to over-voltage protection. Contact Macsolar Serviceline.
View Corresponding Action
If this event occurs:
  • Please check the varistors as per chapter 5.6 “Check Varistors”. If this error is not solvable, please
8
PV-Overvoltage
View Message
The DC input voltage which connects to the inverter is too high. Following causes might lead to this error:
  • The open-circuit voltage of the PV generator is higher than the maximum DC input voltage of the inverter.
  • Sudden DC surge.
  • Junction temperature of solar panel too low.
View Corresponding Action
  • Please immediately disconnect the inverter from the PV strings (see chapter 6.5 “DC side Disconnection”) or else the inverter might be damaged.
Check the DC voltage of the strings for adherence to the maximum input voltage of the inverter, before you reconnect the inverter to the PV strings.
9
Consistence Fault
View Message
Following causes might lead to this error:
  • Interference device
View Corresponding Action
If this event occurs often: Please contact Macsolar Serviceline.
10
Isolation Fault
View Message
There is a sudden isolation fault which is detected by the inverter. Normally this fault will only exist for a very short period of time and shall not have any bad influence to the inverter.
View Corresponding Action
If this event occurs often: Please contact Macsolar Serviceline.
11
DC INJ Fault
View Message
The direct component of the AC current is out of the permitted range.
View Corresponding Action
If this event occurs often: Please contact Macsolar Serviceline.
12
Device Fault
View Message
A fault has occurred in one or more major components of the inverter. For safety consideration, the inverter will shutdown itself.
View Corresponding Action
If this event occurs please contact Macsolar Serviceline.
13
GFCI Device Fault
View Message
The internal sensor has detected that the GFCI Device is out of function. For safety consideration, the inverter will shutdown itself.
View Corresponding Action
If this event occurs: Please contact Macsolar Serviceline.
14
Comm. disturbed
View Message
A fault has occurred in the internal communication of the inverter. However, the inverter continues feeding into the grid.
View Corresponding Action
If this event occurs often: Please contact Macsolar Serviceline.
15
Current Sensor Fault
View Message
A fault has occurred in one or more current sensor of the inverter. For safety consideration, the inverter will shutdown itself.
View Corresponding Action
If this event occurs: Please contact Macsolar Serviceline.
15
Current Sensor Fault
View Message
A fault has occurred in one or more current sensor of the inverter. For safety consideration, the inverter will shutdown itself.
View Corresponding Action
If this event occurs: Please contact Macsolar Serviceline.
16
CPU Ref 2.5V Fault
View Message
The CPU voltage that detected by internal sensor is deviating the pre-set 2.5V reference line.
View Corresponding Action
If this event occurs: Please contact Macsolar Serviceline.
17
EEPROM R/W Fail
View Message
Internal device fault. For safety consideration, the inverter will shutdown itself.
View Corresponding Action
If this event occurs: Please contact Macsolar Serviceline.
18
DC INJ Device Fault
View Message
A fault has occurred in the sensor which detects the direct component of the AC current.For safety consideration, the inverter will shutdown itself.
View Corresponding Action
If this event occurs: Please contact Macsolar Serviceline.
19
Relay Fault
View Message
A fault has occurred in the relay which will automatically disconnect the inverter from the grid. For safety consideration, the inverter will shutdown itself.
View Corresponding Action
If this event occurs: Please contact Macsolar Serviceline.
20
AC-Overcurrent
View Message
The detected AC current has exceeded the pre-set Max. AC Current. Following causes might lead to this error:
  • Short circuit happens in the output circuit.
View Corresponding Action
If this event occurs often: Please contact Macsolar Serviceline.
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