Replacing Fuse; Detaching Wiring Box; Checking Dc Fuse; Checking Ac Fuse - Sharp JH-1600E Service Manual

1. Detaching Wiring Box

I. If you have to detaching wiring box, be sure to turn off AC
and DC input breaker for the solar power conditioner in
advance. Otherwise, it may cause an electrical shock.
II. Confirm the DC and AC power are turned off, and remove four
screws located on the wiring box cover and take off the wiring
box cover.

2. Checking DC Fuse

I. Perform "1. Detaching Wiring Box", and
remove the wiring box cover of the
conditioner.
II. Check resistance of DC fuse (FUW1)
located in the wiring box board by
multi-meter. If the resistance is huge, DC
fuse blew out. In this case, other
components may have defect to cause fuse blow out. The solar power conditioner is
required to be checked in the factory.

3. Checking AC Fuse

I. Perform "1. Detaching Wiring Box", and
remove the wiring box cover of the
conditioner.
II. Check resistance of AC fuse (FUW2)
located in the wiring box board by
multimeter. If the resistance is huge, AC
Fuse blew out. In this case, some
component may have defect to cause fuse blow out. The conditioner is required to be
checked in the factory.

Replacing Fuse

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