Daikin LRYEN10A7Y1 Installation And Operation Manual page 45

Main code LRYEN10*
O
O
O
O
O
O
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit and capacity up unit
4P605461-1D – 2023.08
LRNUN5* Cause
O Malfunction of electronic expansion valve coil
For LRYEN10*:
▪ (Y7E) - A12P (X8A)
▪ (Y4E) - A12P (X9A)
▪ (Y14E) - A12P (X10A)
▪ (Y3E) - A1P (X21A)
▪ (Y8E) - A1P (X22A)
▪ (Y2E) - A1P (X23A)
▪ (Y1E) - A1P (X25A)
▪ (Y13E) - A1P (X26A)
▪ (Y5E) - A2P (X21A)
▪ (Y16E) - A2P (X22A)
▪ (Y17E) - A2P (X23A)
For LRNUN5*:
▪ (Y3E) - A1P (X21A)
▪ (Y1E) - A1P (X22A)
▪ (Y4E) - A1P (X23A)
▪ (Y2E) - A1P (X24A)
— Wrong selection of cooling load (including the
expansion valves)
O Malfunction of ambient temperature sensor
For LRYEN10* and LRNUN5*:
▪ (R1T) - A1P (X18A)
O Malfunction of discharge/compressor body
temperature sensor
For LRYEN10*:
▪ (R31T) - A1P (X19A)
▪ (R32T) - A1P (X33A)
▪ (R33T) - A2P (X19A)
▪ (R91T) - A1P (X19A)
▪ (R92T) - A1P (X33A)
▪ (R93T) - A2P (X19A)
For LRNUN5*:
▪ (R3T) - A1P (X19A)
▪ (R9T) - A1P (X19A)
O Malfunction of suction temperature sensor
For LRYEN10*:
▪ (R21T) - A1P (X29A)
▪ (R22T) - A1P (X23A)
▪ (R23T) - A2P (X29A)
For LRNUN5*:
▪ (R2T) - A1P (X29A)
O Malfunction of the gas cooler outlet
temperature thermistor
For LRYEN10* and LRNUN5*:
▪ (R4T) – A1P (X35A)
18 Troubleshooting
Solution
Check connection on PCB or actuator.
Reselect the cooling load, including the
expansion valve.
Check connection on PCB or actuator.
Check connection on PCB or actuator.
Check connection on PCB or actuator.
Check connection on PCB or actuator.
Installation and operation manual
45