Daikin ERSQ 011AAV1, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller ESIE09-08
176 Troubleshooting
3.37
“L1”
Indoor Unit: Malfunction of PC Board
Remote Control
Display
L1
Subcode 30
Applicable
Models
All indoor units
Method of
Malfunction
Detection
„ Detect malfunctions by current value during waveform output before compressor startup.
„ Detect malfunctions by current sensor value during synchronized operation at the time of
startup.
Malfunction
Decision
Conditions
„ In case of overcurrent (OCP) during waveform output
„ When the current sensor malfunctions during synchronized operation
„ In case of IGBT malfunction
Supposed
Causes
„ Faulty indoor PC board [A4P (1
ø
) or A5P (3
ø
)]
• Over current
• Current sensor failure
•
Failure of IGBT or drive circuit
Troubleshooting
YES
NO
Turn OFF the power
supply once and then turn
it ON again.
Does it return
normally?
It is believed that external
factors (noise, etc.) other
than failure caused the
malfunction.
Replace the indoor PC board
[A4P (1
ø
) or A5P (3
ø
)].
(PC board equipped with a
resin case)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.