11 Trouble Shooting
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11 Trouble Shooting
When inverter does not operate normally, we recommend the following actions for quick
troubleshooting. Please review the error list table carefully.
11.1 Warning
The different LED colors and flashing status identify the current operation statuses of the
inverter. If the red color is always on, it indicates the inverter fault. Usually the warnings
can be cleared through an orderly shutdown / reset or a self-corrective action performed
by the inverter.
11.2 Errors
Error codes identify a possible equipment fault, or incorrect setting/ configuration. Any
and all attempts to correct or clear a fault must be performed by qualified personnel.
Typically, the Errors code can be cleared once the cause or fault is removed.
However, some of the (E) codes may cannot be cleared, in this case please contact the
dealer or Canadian Solar to replace a new one.
Errors as indicated in the table below:
Error Code
Error Message
Suggestion
F-100
Over temperature
1. Check heatsink for obstructions/ventilation.
2. Check the ambient temperature around the inverter.
F-101
High DC input voltage
1. Disconnect the DC switch, remove the DC connector,
measure the voltage of the PV string, and check if it
exceeds the input-voltage specification of the inverter.
2. If exceed the specification, re-layout the PV module
string.
3. If not exceed the specification, while the error still exits,
please contact Customer Service.
F-103
Unconnected grid
1. Turn off DC switch, remove AC connector, measure the
voltage between fire line and the zero line, then check if it
is consistent with the grid-connected specification of
inverter.
2. Inconsistent, check if the AC main switch is connected,
check if the power supply is normal working.
3. Consistent, connect the AC connector, turn on the DC
Switch.
4. If error message still exists, contact Customer service.
