Daikin VRVIII-S, Service Manual

Page: 131 / 266

Troubleshooting by Remote Control SiENBE34-703
120 Troubleshooting
To enter the monitor mode, push the
MODE (BS1) button when in “Setting
mode 1”.
Push the SET (BS2) button and set
the LED display to a setting item.
Push the RETURN (BS3) button
once to display "First digit" of
malfunction code.
Push the SET (BS2) button once to
display "Second digit" of malfunction
code.
Push the RETURN (BS3) button and
switches to the initial status of
“Monitor mode”.
* Push the MODE (BS1) button and
returns to “Setting mode 1”.
Push the SET (BS2) button once to
display "malfunction location".
Detail
description
on next
page.
Push the SET (BS2) button once to
display "master or slave 1 or slave 2"
and "malfunction location".
<Confirmation of malfunction 4>
<Confirmation of malfunction 3>
<Confirmation of malfunction 2>
<Confirmation of malfunction 1>
<Selection of setting item>
<Monitor mode> Contents of malfunction Malfunction
code
Open phase/Power supply imbalance Imbalance of inverter power supply
voltage
P1
Faulty temperature sensor of inverter
radiation fin
Faulty thermistor of inverter fin P4
Refrigerant shortage Refrigerant shortage alarm U0
Abnormal power supply voltage Insufficient Inverter voltage U2
Faulty charge of capacitor in main inverter circuit
Malfunction due to SP-PAM overvoltage
Malfunction due to P-N short circuit
No implementation of test-run U3
Transmission error between indoor
and outdoor unit
I/O transmission error U4
I/O transmission error
Transmission error of other system Indoor unit system abnormal in other
system or other indoor unit system
abnormal in own system
U9
Erroneous field setting System transmission malfunction UA
Overconnection malfunction of indoor units
Malfunction of field setting
Refrigerant abnormal
Connection error (BP unit)
Faulty system malfunction Wiring error (Auto-address error) UH
Conflict in wiring and piping, no setting
for system
Conflict in wiring and piping UF