Daikin R71FUV1 Service Manual page 375

Si20-701_B
Check for connector connections:
Remove and insert the connectors
shown below. Furthermore, check
the connectors for terminal
conditions and continuity.
• X1M power receiving terminal ⇔
• A2P X401A ⇔ X10A A3P
• A1P X28A ⇔ X6A A3P
• A3P X61A ⇔ X402A A2P
• A3P X1A
• A3P P1,P2 ⇔ Reactor terminal
Power
OFF • A3P P3,N3 ⇔ P1,N1 A4P
368
B
Has the
power transistor
got defective?
NO
X400A A2P
⇔ X403A A2P
L1R
Has
the inverter
PCB caused
damage?
NO
Has the
fan driver caused
damage?
NO
C
Troubleshooting by Remote Controller
YES
YES
YES
Replace the fan
driver PCB.
∗Observe the
conditions of
the PCB.
If any wiring has
damage, replace
the harness.
Replace the
inverter PCB.
∗If the PCB
replaced is
badly
damaged, the
compressor is
likely to get
defective. To
make sure,
recheck the
compressor.
Replace the fan
driver PCB.
∗If the PCB
replaced is
badly
damaged, the
fan motor is
likely to get
defective. To
make sure,
recheck the
compressor.