Faults - Delta M70A-260 Installation And Operation Manual

9.3

Faults

Fault num- Possible causes
ber
The grid waveform is abnormal.
F01, F02,
F03
Internal error.
F05 The ambient temperature is > 60 °C.
F06,
The ambient temperature is > 90 °C or < -30 °C.
F08,
F09,
Detection circuit malfunction.
F10
The ambient temperature is < -30 °C.
F07
Internal error.
F13, F29 Internal error.
The DC input voltage is less than the minimum required
F15,
DC input voltage.
F16,
F17
Internal error.
The DC input voltage is less than the minimum required
F18,
DC input voltage.
F19
Internal error.
Incorrect calibration.
F20
Internal error.
F22 Internal error.
F23 Internal error.
Insulation fault in the PV system.
Large PV system capacitance between Plus and Ground
F24
or Minus and Ground.
Internal error.
F26 Internal error.
F27 Internal error.
Internal error.
F28
Fault in the relay driver circuit.
Incomplete independent or parallel configuration between
the inputs.
F30
Grounding of the PV system.
Internal error.
The DC input voltage is greater than the maximum permis-
sible DC input voltage.
F31, F33,
F35
Overvoltage during operation.
Internal error.
F36, F37, Overvoltage during operation.
F38, F39,
Internal error.
F40, F41
Installation and operation manual M70A_260 Flex RPI703M26000 EU V1.1 EN 2022-08-02
9 Error events and troubleshooting
Suggestions for resolution
Contact Delta Customer Service.
Contact Delta Customer Service.
Check the system environment.
Check the system environment.
Contact Delta Customer Service.
Check the system environment.
Contact Delta Customer Service.
Contact Delta Customer Service.
Check the DC input voltage on the inverter display.
There may be insufficient solar radiation.
Contact Delta Customer Service.
Check the DC input voltage on the inverter display.
There may be insufficient solar radiation.
Contact Delta Customer Service.
Check the accuracy of the voltage and power.
Contact Delta Customer Service.
Contact Delta Customer Service.
Contact Delta Customer Service.
Check the insulation of the DC inputs.
Check the capacitance, it must be < 12 µF. Install an exter-
nal transformer if necessary.
Contact Delta Customer Service.
Contact Delta Customer Service.
Contact Delta Customer Service.
Contact Delta Customer Service.
Contact Delta Customer Service.
Check the input connections.
Check the insulation of the PV system.
Contact Delta Customer Service.
Change the solar system setting so that the DC input volt-
age at DC1 is below the maximum permissible DC input
voltage.
Contact Delta Customer Service.
Contact Delta Customer Service.
Contact Delta Customer Service.
Contact Delta Customer Service.
Faults
91