Malfunction Code Indication By Outdoor Unit Pcb - Daikin RXYQ72 Serivce Manual

Troubleshooting by Remote Controller

Malfunction code indication by outdoor unit PCB

To enter the monitor mode, push the
MODE button (BS1) when in
"Setting mode 1".
<Selection of setting item>
Push the SET button (BS2) and set
the LED display to a setting item.
<Confirmation of malfunction 1>
Push the RETURN button (BS3)
once to display "First digit" of
malfunction code.
<Confirmation of malfunction 2>
Push the SET button (BS2) once to
display "Second digit" of malfunction
code.
<Confirmation of malfunction 3>
Push the SET button (BS2) once to
display "master or slave1 or slave2"
and "malfunction location".
Push the RETURN button (BS3) and
switches to the initial status of
"Monitor mode".
∗ Push the MODE button (BS1) and
returns to "Setting mode 1".
118
Abnormal discharge pressure
Abnormal suction pressure
Compressor lock
Activation of OC
Over load, over current,
abnormal lock of outdoor unit fan motor
Malfunction of electronic expansion valve
Abnormal position signal of outdoor unit fan motor
Faulty sensor of outdoor air temperature
Faulty sensor of heat storage unit
Abnormality in water system of heat storage unit
Transmission error between heat storage unit and controller
Abnormal discharge pipe temperature
Abnormal heat exchanger temperature
Faulty current sensor
Faulty sensor of discharge pipe temperature
Faulty sensor of suction pipe temperature
Faulty sensor of heat exchanger temperature
Faulty sensor of receiver temperature
Faulty sensor of oil pressure equalizing pipe temperature
Faulty sensor of subcool heat exchanger temperature
Faulty sensor of discharge pressure
Faulty sensor of suction pressure
Inverter radiation fin temperature rising
Detail
DC output over current
description
on next Electronic thermal switch
page.
Stall prevention (Limit time)
Transmission error between inverter and outdoor unit
Open phase/Power supply imbalance
Faulty temperature sensor inside switch box
Faulty temperature sensor of inverter radiation fin
Incorrect combination of inverter and fan driver
Gas shortage
Reverse phase
Abnormal power supply voltage
No implementation of test-run
Transmission error between indoor and outdoor unit
Transmission error between outdoor units, transmission error
between thermal storage units, duplication of IC address
Transmission error of other system
Erroneous on-site setting
Faulty system function
Transmission error in accessory devices, conflict
in wiring and piping, no setting for system
Contents of malfunction
HPS activated
Abnormal Pe
Detection of INV compressor lock
Detection of STD1 compressor lock
Detection of STD2 compressor lock
Instantaneous over current of DC fan motor
Detection of DC fan motor lock
EV1
EV2
EV3
Abnormal position signal of DC fan motor
Faulty Ta sensor
Abnormal Td
Refrigerant over charge
Faulty CT1 sensor
Faulty CT2 sensor
Faulty Tdi sensor
Faulty Tds1 sensor
Faulty Tds2 sensor
Faulty Ts sensor
Faulty Tb sensor
Faulty Tl sensor
Faulty To sensor
Faulty Tsh sensor
Faulty Pc sensor
Faulty Pe sensor
Over heating of inverter radiation fin temperature
Inverter instantaneous over current
Electronic thermal switch 1
Electronic thermal switch 2
Out-of-step
Speed down after startup
Lightening detection
Stall prevention (Current increasing)
Stall prevention (Faulty startup)
Abnormal wave form in startup
Out-of-step
Inverter transmission error
Imbalance of inverter power supply voltage
Faulty thermistor of inverter box
Faulty thermistor of inverter fin
Faulty field setting or faulty conbination of PC board
Gas shortage alarm
Reverse phase error
Insufficient inverter voltage
Inverter open phase (phase T)
Charging error of capacitor in inverter main circuit
I/O transmission error
O/O transmission error
Indoor unit system malfunction in other system or
other unit of own system
Abnormal connection with excessive number of indoor units
Conflict of refrigerant type in indoor units
Incorrect wiring (Auto address error)
Malfunction of multi level converter, abnormality in
conflict check
SiUS39-601
Malfunction
code
E3
E4
E5
E6
E7
E9
H7
H9
HC
HJ
HF
F3
F6
J2
J3
J5
J6
J7
J8
J9
JA
JC
L4
L5
L8
L9
LC
P1
P3
P4
PJ
U0
U1
U2
U3
U4
U7
U9
UA
UH
UJ
UF
Troubleshooting