Honeywell VFD CORE Installation Instructions Manual page 256

CHAPTER 14: FAULT CODES AND DESCRIPTIONS
Fault
Uocc
A phase short
Fault
Vocc
B phase short
Fault
Wocc
C phase short
Fault
ryF
MC Fault
Fault
ocU
Unknow over Amp
Fault
ovU
Unknow over volt.
Fault
OPHL
U phase lacked
Fault
OPHL
V phase lacked
Fault
OPHL
W phase lacked
63-4528—04
Phase A short circuit
Phase B short circuit
Phase C short circuit
The electromagnet switch of the power board is not sealed. (For larger power model: Frame E and
above)
Unknown over current
Unknown over voltage
Output phase loss (Phase U)
Output phase loss (Phase V)
Output phase loss (Phase W)
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