
FAULT
Message
Possible cause
Action
HW Con. Fail
(F26)
1. Power line is disconnected
inside the inverter
2. Current feedback circuit is
defective
1. Check the power lines inside the inverter
2. Check the current feedback circuit inside
the inverter
RCMU Fail
(F27)
1. RCMU is disconnected
2. Detection circuit malfunction
1. Check the RCMU connection inside the
inverter
2. Check the detection circuit inside the
inverter
1. One or more relays are
sticking
2. The driver circuit for the
relay malfunction
1. Replace the defective relay(s)
2. Check the driver circuit inside the inverter
1. One or more relays are
abnormal
2. The driver circuit for the
relay malfunction
3. The detection accuracy is
not correct for Vgrid and Vout
1. Replace the defective relay(s)
2. Check the driver circuit inside the inverter
3. Check the Vgrid and Vout voltage detect
on accuracy
RLY Short
(F28)
RLY Open
(F13, F29)
Bus Unbal.
(F30)
1. Not totally independent or
parallel between inputs
2. PV Array short to Ground
3. Driver for boost is defective
or disconnected
4. Detection circuit malfunction
1. Check the inputs connections
2. Check the PV Array insulation
3. Check the driver circuit for boost inside
the inverter
4. Check the detection circuit inside the
inverter
HW Bus OVR
(F31, F33, F35)
1. Driver for boost is defective
2. Voc of PV array is over
1000Vdc
3. Surge occurs during
operation
4. Detection circuit malfunction
1. Check the driver circuit for boost inside
the inverter
2. Modify the solar array setting, and make
the Voc less than 1000Vdc
3. N/A
4. Check the detection circuit inside the
inverter
AC Cur. High
(F36, F37, F38,
F39, F40, F41)
1. Surge occurs during
operation
2. Driver for inverter stage is
defective
3. Switching device is defective
4. Detection circuit malfunction
1. N/A
2. Check the driver circuit in inverter stage
3. Check all switching devices in inverter
stage
4. Check the detect circuit inside the inverter
HW CT A Fail
(F42)
1. Test current loop is broken
2. CTP3 is defective
3. Detection circuit malfunction
1. Check the connection of CNP4 to CNM4
2. Replay CTP3 with new one
3. Check the detection circuit inside the
inverter
65
Error message and Trouble Shooting
Summary of Contents for RPI M30A
Page 2: ......
Page 57: ...Figure 6 3 Pull out the SPD unit Figure 6 2 Recognize the damaged SPD unit 57 Maintenance...
Page 77: ...RPI M30A M50A The power behind competitiveness www deltaww com English 1 77 153...
Page 79: ...79...
Page 81: ...2 1 RPI M30A M50A 2 1 2 2 1 2 2 RPI M30A 2 2 2 1 RPI M50A 2 3 2 2 81...
Page 87: ...3 AC DC 1 12 M6 3 3 2 3 2 M6 3 4 87...
Page 89: ...M6 Screw 6 Wall M6 Screw 6 3 3 3 4 89...
Page 90: ...3 5 25 60 30 cm 20 cm 50 cm 30 cm 30 cm 3 5 90...
Page 93: ...bus bar kit 2 DC1 DC2 DC1 DC2 String 1 5 String 6 10 String 1 5 String 6 10 RPI M50A 4 2 93...
Page 100: ...4 10 32A 4 10 M30A 32A 32A 100...
Page 101: ...4 11 30A 4 11 30A Note 30A M30A 101...
Page 103: ...2 2 103...
Page 104: ...String Fuse 15A String Fuse Y String Fuse 25A 6 2 String Fuse Max 25A 4 String Fuse 104...
Page 107: ...AC AC AC plug 55mm L1 L2 L3 N 52 5mm RPI M30A 12mm 0 5 inch RPI M50A 18mm 0 7 inch 4 12 AC 107...
Page 114: ...4 5 3 RPI M30A M50A 2 5 2 7 5 Dry Contact 4 19 Dry Contact 1 Dry Contact 2 114...
Page 131: ...SPD Fail 1 AC DC 2 6 1 3 DC SPD AC SPD 6 2 4 6 3 5 6 1 RPI M50A 131...
Page 132: ...6 3 SPD 6 2 SPD 132...
Page 134: ...6 5 6 6 6 3 6 6 134...
Page 135: ...6 7 6 8 6 4 6 5 6 8 4 135...
Page 142: ...8 Manual Switch OFF AC voltmeter AC DC AC DC RS 485 142...
Page 148: ...148 9 3 M30A cos 0 9...
Page 152: ......
Page 153: ...RPI M30A M50A The power behind competitiveness www deltaww com English 1 77 153...
Page 155: ...155...
Page 157: ...RPI M30A M50A 2 1 2 2 1 2 1 2 2 RPI M30A 2 2 2 1 RPI M50A 2 3 2 2 157...
Page 163: ...3 AC DC 1 12 M6 3 3 2 3 2 M6 3 4 163...
Page 165: ...M6 Screw 6 Wall M6 Screw 6 3 3 3 4 165...
Page 166: ...3 5 25 60 30 cm 20 cm 50 cm 30 cm 30 cm 3 5 166...
Page 169: ...bus bar kit 2 DC1 DC2 DC1 DC2 String 1 5 String 6 10 String 1 5 String 6 10 RPI M50A 4 2 169...
Page 176: ...4 10 32A 4 10 M30A 32A 32A 176...
Page 177: ...4 11 30A 4 11 30A Note 30A M30A 177...
Page 179: ...2 2 179...
Page 180: ...String Fuse 15A String Fuse Y String Fuse 25A 6 2 String Fuse Max 25A 4 String Fuse 180...
Page 183: ...AC AC AC plug 55mm L1 L2 L3 N 52 5mm RPI M30A 12mm 0 5 inch RPI M50A 18mm 0 7 inch 4 12 AC 183...
Page 190: ...4 5 3 RPI M30A M50A 2 5 2 7 5 Dry Contact 4 19 Dry Contact 1 Dry Contact 2 190...
Page 207: ...SPD Fail 1 AC DC 2 6 1 3 DC SPD AC SPD 6 2 4 6 3 5 6 1 RPI M50A 207...
Page 208: ...6 3 SPD 6 2 SPD 208...
Page 210: ...6 5 6 6 6 3 6 6 210...
Page 211: ...6 7 6 8 6 4 6 5 6 8 4 211...
Page 218: ...8 Manual Switch OFF AC voltmeter AC DC AC DC RS 485 218...
Page 222: ...222 9 1 M30A cos 1 0...
Page 224: ...224 9 3 M30A cos 0 9...
Page 228: ...Version 1 03 2015 May...