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SUNSYS H50
- Ref.: IOMSUNHMXX05-GB 01
ENGLISH
9. MESSAGES
9.2. FAULT
MESSAGES
Description of error messages
Message
Description
Solutions
A01: DC Offset
Over Rating
1. Abnormal grid voltage
2. Measuring circuit failure
1. Check for the existence of non-linear loads
connected to the grid
2. Contact the technician
A05: NTC Over
Temp
1. Ambient temperature > 60 °C or < -30 °C
2. Measuring circuit failure
1. Check the installation environment and ventilation
2. Contact the technician
A06: Inside NTC
Circuit Fail
1. Ambient temperature > 100 °C or < -24 °C
2. Measuring circuit failure NTC
1. Check the installation environment
2. Contact the technician
A08: Heat Sink
NTC1 Fail
1. Boost heatsink temperature > 100 °C or < -24 °C
2. Measuring circuit failure NTC1
1. Check the installation environment
2. Contact the technician
A09: Heat Sink
NTC2 Fail
1. Inverter heatsink temperature > 100 °C or < -24 °C
2. Measuring circuit failure NTC2
1. Check the installation environment
2. Contact the technician
A15: DSP ADC
Vgrid/Iout Fail
1. Insufficient input power
2. Measuring circuit failure
1. Check that DC voltage > 150 V
2. Contact the technician
A16: DSP ADC
Vin/Vbus Fail
1. Insufficient input power
2. Measuring circuit failure
1. Check that DC voltage > 150 V
2. Contact the technician
A17: DSP ADC
Iin/Iboost Fail
1. Insufficient input power
2. Measuring circuit failure
1. Check that DC voltage > 150 V
2. Contact the technician
A18:RED. ADC
Vgrid Fail
1. Insufficient input power
2. Measuring circuit failure
1. Check that DC voltage > 150 V
2. Contact the technician
A19:DSP ADC
Iout_dc Fail
1. Insufficient input power
2. Measuring circuit failure
1. Check that DC voltage > 150 V
2. Contact the technician
A20: Efficiency
Inconsistent
1. Calibration incorrect
2. Measuring circuit failure
1. Check the current measurements between
inverter and system
2. Contact the technician
A22: Internal
Comm Fault_R
1. Problems with internal communication between
RED and CPU
1. Switch off the inverter and switch on again
2. Contact the technician
A23: Internal
Comm Fault_D
1. Problems with internal communication between DSP
and COMM
1. Switch off the inverter and switch on again
2. Contact the technician
A24: Residual
Curr Over Rating
1. Problems with PV field insulation
2. High stray capacitance of PV field
3. High level of current leakage to earth
1. Check PV field insulation
2. Check that the stray capacitance of each
input to earth is < 2.5 μF.
3. Check system wiring
A25: Ground
Fault
1. Problems with PV field insulation
2. High stray capacitance of PV field
1. Check PV field insulation
2. Check that the stray capacitance of each
input to earth is < 2.5 μF.
A27: RCMU
Circuit Fail
1. Internal control circuits not working
1. Contact the technician
A28: Relay Short
1. Output relays with contacts closed
2. Internal control circuits not working
1. Contact the technician
2. Contact the technician
A29: Relay Open
1. Output relays faulty
2. Internal control circuits not working
3. Grid voltage measurements abnormal
1. Contact the technician
2. Contact the technician
3. Compare machine and grid measurement values