Error Codes And Corresponding Measures - Daikin RXSQ24TAVJU Service Manual

SiUS331708EA
3.5

Error Codes and Corresponding Measures

Please check the remote controller connected to the indoor unit for verification.
Error code
E3
E4
E9
F3
H9
J3
J5
J6
J7
J9
JA
JC
P1
U2
U3
U4
U9
Field Settings and Test Operation
Description
High pressure switch activated (S1PH)
· Too much refrigerant charged
· Stop valve closed
Stop valve closed (liquid).
· Too much refrigerant charged
· Stop valve closed
Defective low pressure:
· Stop valve closed
· Refrigerant undercharged
· Defective indoor unit
Defective electronic expansion valve
(Subcooling) (RXSQ60TAVJU: Y3E)
Defective electronic expansion valve (Main)
(Y1E)
Discharge pipe temperature too high:
· Stop valve closed
· Refrigerant undercharged
Defective outdoor air thermistor (R1T)
Defective discharge pipe thermistor (R2T):
Tripping
Defective discharge pipe thermistor (R2T):
Short circuit
Defective suction pipe thermistor
(R3T and R5T): Tripping
Defective outdoor heat exchanger deicer
thermistor (R4T)
Defective heat exchanger liquid pipe thermistor
(R7T)
Defective subcooling heat exchanger gas pipe
thermistor (R6T: RXSQ60TAVJU only)
Defective high pressure sensor (S1NPH):
Tripping
Defective high pressure sensor (S1NPH):
Short circuit
Defective low pressure sensor (S1NPL):
Tripping
Defective low pressure sensor (S1NPL):
Short circuit
Inverter unbalanced power supply voltage
Inverter insufficient voltage
Inverter power supply phase missing
System test operation not yet executed (Test
operation cannot be executed.)
Q1/Q2 or indoor-outdoor units wiring error
Q1/Q2 or indoor-outdoor units wiring error
System test operation ends abnormally.
System mismatch
Mismatched indoor unit models used (R-410A,
R-407C, RA, Hydrobox, etc.).
Defective indoor unit
Solution
Check the stop valve or (field) piping abnormality
or the airflow on the air cooling heat exchanger.
· Check the amount of refrigerant and recharge
the unit.
· Open the stop valve.
Open the liquid stop valve.
· Check the amount of refrigerant and recharge
the unit.
· Open the stop valve.
· Open the stop valve.
· Check the amount of refrigerant and recharge
the unit.
· Check the user interface display.
· Check the transmission wiring between the
indoor and outdoor units.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
· Open the stop valve.
· Check the amount of refrigerant and recharge
the unit.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check the connection of the PCB or the actuator.
Check if the power supply meets the
specifications.
Check if the power supply meets the
specifications.
Check if the power supply meets the
specifications.
Execute system test operation.
Check (Q1/Q2) wiring.
Check (Q1/Q2) wiring.
Re-execute the test operation.
Check if there are any other defective indoor
units and verify if the indoor unit combination
meets requirements.
Test Operation
136