Delta RPI M80U Operation And Installation Manual page 63

Message
1. Test current loop is broken
HW CT B Fail
2. CTP4 is defective
(F43)
3. Detection circuit malfunction
1. Test current loop is broken
HW CT C Fail
2. CTP5 is defective
(F44)
3. Detection circuit malfunction
1. Large Grid harmonics
HW AC OCR
2. Switching device is defective
(F45)
3. Detection circuit malfunction
AFCI Circuit
1. AFCI is not installed.
Fail
2. AFCI self-test is fail.
(F58)
AFCI Fault The inverter detects Arcing
(F59) occurs.
1. Switching device in boost
DC Cur. High is defective
(F60, F61, 2. Driver for boost is defective
F70, F71) 3. Input current detection
circuit malfunction
HW DC RLY One or more DC relays are
(F76) abnormal
Table 6-3 : Fault Message
Possible cause
Error message and Trouble Shooting
FAULT
Contact our customer service for
technical support
Contact our customer service for
technical support
1. Check the utility waveform. Grid connection
of inverter need to be far away from
non-linear load if necessary
2. Check all switching devices in inverter
stage
3. Contact our customer service for
technical support
Check the AFCI detection circuit board for
making sure it is conneted correctly
Check cables for replacement
1. Check all switching device in boost
2. Check the driver circuit for boost inside
the inverter
3. Check input current detection circuit
Please contact our customer service for
technical support
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