SERVICE PARTS INFORMATION 3
Main
Filter PCB
PCB
Replace Main PCB
Replace Main PCB
Check Main PCB -1
YES
NO
(1) Connect all the connection wires between the Filter PCB - Main PCB disconnected at step (2).
(2) Is there a short between L1, L3-N?
Check pressure sensors (high pressure/low pressure)
Pressure sensor check. (Refer to Service parts information 15)
Check Main PCB -2
(3) Disconnect the wires of the pressure sensors (high pressure/low pressure) connected to the connector of the Main PCB.
(4) Is there a short between pins 1-3 of the Main PCB side connector?
Replace Main PCB
YES
YES
NO
NO
Check Electric parts
Is the reactor Assy defective?
Check the reactor (Refer to the parts information 6)
Replace Reactor
YES
NO
Check Main PCB -3
(5) Disconnect the Main PCB side connector of
the connection wires (8-pin connector) between the Main PCB - Inverter PCB.
(6) Is there a short between pins 1-2 of the Main PCB side connector (8 pins)?
Turn on the power.
(7) Reconnect all the connection wires disconnected up to (1)-( 6) to their original places.
(8) Turn on the AC power.
If the LED of the Main PCB does not light or blink, replaces the Main PCB.
04-114
Check Fuse on the Main PCB
YES
Is Fuse open?
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