Self-Checking Of Indoor Unit Pcb (Except For: Rci, Rcd, Rpi (0.8 To 5.0Hp), Rpc (After Alteration) And Kpi) - Hitachi RPI-0.8FSG1 Service Manual

1.3.3 Self-Checking of Indoor Unit PCB
(Except for: RCI, RCD, RPI (0.8 to 5.0HP), RPC (After Alteration) and KPI)
(1) Self-Checking by Relays on Indoor Unit PCB
• To Check Abnormality on Indoor Unit PCB due to Malfunction
• To check Abnormality on Indoor Unit PCB Based on Results of Checking by CHECK switch on the
remote control switch and Self-Checking Function
■ Procedure
Refer to pages 1-94, 95 for location and function of DSW and LED.
a) Turn OFF the main power switch.
b) Disconnect connectors CN5 and CN8, and set dip switch DSW2 as shown below.
Set #1 at ON side and #2 at OFF side.
ON
OFF
1 2 3 4 5 6 7 8
Dip Switch DSW2
NOTE: Before turning ON the power, see checking procedure mentioned in next page.
c) Turn ON the main power switch.
Check Mode starts. (See next page.)
* Analog Test
* Relay Test
d) After completion of self-checking, turn OFF the power and reset the dip switch as before.
TROUBLESHOOTING
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