Daikin FCQ18PVJU Service Manual page 88

Troubleshooting by Remote Controller
Malfunction code indication by outdoor unit P.C.B.
<Monitor mode>
To enter the monitor mode, push the
MODE (BS1) button when in
"Setting mode 1".
<Selection of setting item>
Push the SET (BS2) button and set
the LED display to a setting item.
<Confirmation of malfunction 1>
Push the RETURN (BS3) button
once to display "First digit" of
malfunction code.
<Confirmation of malfunction 2>
Push the SET (BS2) button once to
display "Second digit" of malfunction
code.
<Confirmation of malfunction 3>
Push the SET (BS2) button once to
display "malfunction location".
<Confirmation of malfunction 4>
Push the SET (BS2) button once to
display "master or slave 1 or slave 2"
and "malfunction location".
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".
81
In-phase malfunction of DIII-Net
Abnormal discharge pressure
Abnormal suction pressure
Compressor lock
Over load, overcurrent,
Malfunction of electronic expansion
Faulty sensor of outdoor air
temperature
Abnormal discharge pipe temperature
Abnormal heat exchanger temperature Refrigerant over charge
Faulty sensor of discharge pipe
temperature
Faulty sensor of suction pipe
temperature
Faulty sensor of heat exchanger
temperature
Faulty sensor of discharge pressure
Faulty sensor of suction pressure
Faulty Inverter P.C.B.
Inverter radiation fin temperature rising Over heating of inverter radiation fin temperature
Detail
DC output overcurrent
description
Electronic thermal
on next
page.
Stall prevention (Limit time)
Transmission error between inverter
and outdoor unit
Contents of malfunction
Detection of DIII-Net
HPS activated
Abnormal Pe
Detection of INV. compressor lock
Detection of DC fan 1 motor lock
EV1
Faulty Ta sensor (short)
Abnormal Td
Faulty Tdi sensor (short)
Faulty Ts1 sensor (short)
Faulty Ts2 sensor (short)
Faulty Tb sensor (short)
Faulty Pc sensor (short)
Faulty Pe sensor (short)
Faulty IPM
Abnormal Current sensor offset
Abnormal IGBT
Faulty Current sensor
Abnormal SP-PAM over-voltage
Inverter instantaneous overcurrent
Electronic thermal switch 1
Electronic thermal switch 2
Out-of-step
Speed down after startup
Lightening detection
Stall prevention (Current increasing)
Stall prevention (Faulty start up)
Abnormal wave form in startup
Out-of-step
Inverter transmission error
SiUS28-902_a
Malfunction
code
E1
E3
E4
E5
E7
E9
H9
F3
F6
J3
J5
J6
JA
JC
L1
L4
L5
L8
L9
LC
Troubleshooting