Class 3

Class 2

(continued)

Class 3

208 Problems with the mains relay ENS recognises a faulty mains relay If Service-Code is displayed permanently, you should contact a Fronius trained service technician

Service class 3 comprises service codes which may appear during operation of feeding power supply, which however basically do not cause a permanent interruption of the operation of feeding power into the mains. After automatic disconnection from the mains and monitoring of the mains as stipulated, your FRONIUS IG unit will try to resume the feeding operation.

Code Designation

301 overload current (AC)

302 overload current (DC)

303 * temperature excursion AC side

304 * temperature excursion DC-side

Description

Short interruption of power supply feeding into mains network caused by overload current FRONIUS IG resumes starting up phase Short interruption of power supply feeding into mains network caused by overload current FRONIUS IG resumes starting up phase

Short interruption of power supply feeding into mains network caused by temperature excursion

air vents clogged

Short interruption of power supply feeding into mains network caused by temperature excursion

air vents clogged

Repair

automatically by itself Should the service load appear permanently you should contact your installation specialist

automatically by itself Should the service load appear permanently you should contact your installation specialist

after a two minutes’ cooling phase your FRONIUS IG unit begins starting up again

clean air vents.

Should the service load appear permanently you should contact your installation specialist after a two minutes’ cooling phase your FRONIUS IG unit begins starting up again

clean air vents.

Should the service load appear permanently you should contact your installation specialist

*Service code 303 and 304 are shown briefly under certain circumstances. A brief display of the service codes 303 and 304 does not mean there is a fault.