SERVICE PARTS INFORMATION 4
Inverter PCB
Filter PCB (INV)
Check Filter PCB (INV) -2
Check Filter PCB (INV) -1
Check Filter PCB (INV) -3
Replace defective electric parts.
Replace Inverter PCB
YES
YES
Electric parts check
Replace Filter PCB (INV)
Replace Filter PCB (INV)
NO
YES
YES
NO
PCB pattern and parts on PCB defective?
(2) Replace blown fuse.
(3) Disconnect all the connection wires between the Filter
PCB (INV) - diode bridge.
(4) Is there a short between L1-L2, L2-L3, and L1-L3?
Check Inverter PCB -1
YES
(5) Disconnect the connection wires (2) between
the Inverter PCB - electrolytic capacitor.
(6) Is there a short between the wires of step (5)?
Replace Inverter PCB
YES
NO
NO
Check Inverter PCB -2
(7) Disconnect the connection wires (8-pin connector)
between the Inverter PCB - Main PCB.
(8) Is there a short between Inverter PCB side connector
pins 1-2?
NO
Inverter PCB side short
Replace Inverter PCB
Filter PCB(INV) side short
Replace Filter PCB(INV)
YES
Check Inverter PCB -3
(9) Disconnect the connection wires (3-pin connector)
between the Inverter PCB - Filter PCB(INV).
(10) Is there a short between Inverter PCB side connector
pins 1-3 and Filter PCB(INV) side connector pins 1-3?
Turn on the power.
(11) Reconnect all the connection wires disconnected up to (1)-(10) to their original places.
(12) Turn on the AC power.
If the LED of the Inverter PCB does not light or blink, replaces the Inverter PCB-Filter PCB(INV).
NO
NO
(1) Using a tester, measure the resistance value of both ends
of the fuses (P511/512/513). (*Cannot be checked visually.)
Are Fuses (45A/500V) open?
Are the following parts defective?
*For the check method, refer to 6-5.
3-phase diode bridge
Resistor, Cement (Surge prevention/ Balance)
Magnetic Relay
Inverter compressor reactor
Capacitor
Reactor
04-98
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