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4-5-15 DC Link Over voltage/ Low voltage error
1. Checklist :
1) Is the power voltage normal?(Lightning, Power interruption etc.)
2) Is AC Power cable connection normal?(Detaching the wire)
2. Troubleshooting procedure
Is the AC Power cable connection to the outdoor
unit terminal block good?
Is the connection of reactor terminal good?
Are the FUSEs on EMI PCB blown?
Push the center bar of M/C and mesure the resis-
tance of each contact.
Is each contact resistance normal?
Does the error reappear frequently
The cause of this error may be power source
trouble as like power interruption.
Check the power source.
4-34
�es
�es
No
(less than 0.1ohm)
�es
No
No
Check and reconnecting the
AC power cable wire
No
Check and reconnecting the reactor wire
at the TAB terminal
�es
Replace the blown FUSE
No
Exchange M/C
�es
Exchange INVERTER PCB
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