Product specifications

4-25 Samsung Electronics

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

Yes

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? (less than 0.1ohm)

Does the error reappear frequently

The cause of this error may be power source trouble

as like power interruption.Check the power source

Check and reconnecting the reactor wireat

the TAB terminal

Check and reconnecting the AC power cable wire

Replace the blown FUSE

Exchange M/C

Exchange INVERTER PCB

Yes