Table 9-4 Fault Message - Delta RPI-M8 User Manual

FAULT
Message Possible cause
1. Utility waveform is abnormal
HW DC
2. Detection circuit malfunction
Injection
1. The ambient is over 60℃
Temperature
(The installation is abnormal)
High
2. Detection circuit malfunction
1. Ambient temperature >90℃
HW NTC1
or <-30℃
Fail
2. Detection circuit malfunction
1. Ambient temperature is
Temperature
<-30℃
Low
2. Detection circuit malfunction
1. Ambient temperature >90℃
HW NTC2
or <-30℃
Fail
2. Detection circuit malfunction
1. Ambient temperature >90℃
HW NTC3
or <-30℃
Fail
2. Detection circuit malfunction
1. Ambient temperature >90℃
HW NTC4
or <-30℃
Fail
2. Detection circuit malfunction
1. Insufficient input power
2. Auxiliary power circuitry
HW DSP
malfunction
ADC1
3. Detection circuit malfunction
1. Insufficient input power
2. Auxiliary power circuitry
HW DSP
malfunction
ADC2
3. Detection circuit malfunction

Table 9-4 Fault Message

1. Check the utility waveform. Grid connection of
inverter need to be far away from non-linear
load if necessary
2. Check the detection circuit inside the inverter
1. Check the installation ambient and
environment
2. Check the detection circuit inside the inverter
1. Check the installation ambient and
environment
2. Check the detection circuit inside the inverter
(RTM1)
1. Check the installation ambient and
environment
2. Check the detection circuit inside the inverter
(RTM1, RTB1, RTG1 and RTH1)
1. Check the installation ambient and
environment
2. Check the detection circuit inside the inverter
(RTB1)
1. Check the installation ambient and
environment
2. Check the detection circuit inside the inverter
(RTG1)
1. Check the installation ambient and
environment
2. Check the detection circuit inside the inverter
(RTH1)
1. Check the input voltage, must > 150Vdc
2. Check the auxiliary circuitry inside the inverter
3. Check the detection circuit inside the inverter
1. Check the input voltage, must > 150Vdc
2. Check the auxiliary circuitry inside the inverter
3. Check the detection circuit inside the inverter
Action
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