INSTALLATION AND
PROGRAMMING INSTRUCTIONS
SUNWAY M XS 7500TL
117/
148
A141
Description
Relay test failure
Event
Relay malfunction detected during the test performed before
delivering energy.
Possible
Causes
One or multiple relays faulty.
Relay diagnostic circuit failure.
Solutions
Reset the alarm (4.3.6.2).
If the alarm persists, contact the Customer Service of Elettronica
Santerno SpA.
A142
Description
Relay hardware failure during energy delivery
Event
Relay malfunction detected while the inverter is delivering energy.
Possible
Causes
One or multiple relays faulty.
Relay diagnostic circuit failure.
Solutions
Reset the alarm (4.3.6.2).
If the alarm persists, contact the Customer Service of Elettronica
Santerno SpA.
A146
Description
RCD test failure
Event
Malfunction of the integrated residual current device (RCD) detected
during the test performed before delivering energy.
Possible
Causes
Integrated RCD fault.
Failure in the integrated RCD diagnostic circuit.
Solutions
Reset the alarm (4.3.6.2).
If the alarm persists, contact the Customer Service of Elettronica
Santerno SpA.
A149
Description
Control board autotest failure
Event
Multiple causes are possible: the autodiagnostics function of the
control board constantly checks its correct operation.
Possible
Causes
Strong electromagnetic disturbance.
Possible failure of the microcontroller or other circuits in the control
board.
Solutions
Contact the Customer Service of Elettronica Santerno SpA.
A150
Description
CAN communication failure
Event
CAN communication failure detected during normal operation.
Possible
Causes
Strong electromagnetic disturbance.
Possible cable disconnection.
Solutions
Reset the alarm (4.3.6.2).
If the alarm persists, contact the Customer Service of Elettronica
Santerno SpA.
A151
Description
Phase unbalance out of allowable range
Event
Phase unbalance out of allowable range has been detected during
normal operation.
Possible
Causes
One string is in the shade and is underproducing energy.
One string is faulty and is underproducing energy.
One of the inverters if faulty and is not delivering energy.
Solutions
Reset the alarm (4.3.6.2).
If the alarm persists, contact the Customer Service of Elettronica
Santerno SpA.