Self-Checking Of Indoor Unit Pcb - Hitachi FSG Series Service Manual

1
TROUBLESHOOTING
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1.3.3

SELF-CHECKING OF INDOOR UNIT PCB

n Self-Checking by Relays on Indoor Unit PCB
n To Check Abnormality on Indoor Unit PCB due to Malfunction
n To check Abnormality on Indoor Unit PCB Based on Results of Checking by CHECK switch on the remote control switch and
Self-Checking Function
ΠProcedure
Refer to page 1-76 for location and function of DSW and LED.
®
Turn OFF the main power switch.
¯
Disconnect connectors CN5 and CN8, and set dip switch DSW2 as shown below.
Set #1 at ON side and #2 at OFF
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2))
Dip Switch DSW2
Note: Before turning ON the power, see checking procedure mentioned in next page
°
Turn ON the main power switch.
Check Mode starts. (See next page.)
A Analog Test
B Relay Test
±
After completion of self-checking, turn OFF the power and reset the dip switch as before.