Daikin RZQ100B8V3B Service Manual page 237

ESIE05-03
Troubleshooting
(Note)
Target : ±10V between phases,
R-S, S-T, T-R
(Note)
Check for faulty contact,
disconnection, K11R, K12R
deposited or fused between
power supply and inverter.
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Part 3 – Troubleshooting
Check
LED on the
NO
outdoor unit PC board
(Open phase?)
YES
Open phase
YES
of power supply voltage?
NO
Is the voltage
YES
imbalance between phases
large?
NO
NO
Inspect the main
circuit wiring.
YES
Service
life of capacitor
YES
(Has the capacitor been
used for a long
time?)
NO
Faulty
YES
diode module
(open, disconnected)
NO
Error Codes: Outdoor Units
Other factors than open phase
Field factors
Field factors
Replace the MS.
Correct the wiring.
Replace the electrolytic
capacitor.
Replace the power unit.
Faulty outdoor unit PC
board
3–89
1
3 3
4
5