Daikin LRYEN-AY1 Installation And Operation Manual page 38

18 Troubleshooting
Main code LRYEN10*
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Installation and operation manual
38
LRNUN5* Cause
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)
O Malfunction of the economizer outlet
temperature thermistor
For LRYEN10*:
▪ (R8T) – A1P (X30A)
For LRNUN5*:
▪ (R6T) – A1P (X35A)
O Malfunction of the liquid (after sub-cool)
temperature thermistor
For LRYEN10*:
▪ (R7T) – A1P (X30A)
For LRNUN5*:
▪ (R7T) – A1P (X35A)
▪ (R5T) – A1P (X35A)
O Malfunction of high pressure sensor
For LRYEN10*:
▪ (S1NPH) – A2P (X31A)
For LRNUN5*:
▪ (S1NPH) – A1P (X31A)
O Malfunction of low pressure sensor
For LRYEN10*:
▪ (S1NPL) – A1P (X31A)
▪ (S2NPL) – A1P (X32A)
▪ (S1NPM) – A12P (X31A)
▪ (S2NPM) – A2P (X32A)
For LRNUN5*:
▪ (S1NPL) – A1P (X32A)
▪ (S2NPM) – A6P (X31A)
Solution
Check connection on PCB or actuator.
Check connection on PCB or actuator.
Check connection on PCB or actuator.
Check connection on PCB or actuator
Check connection on PCB or actuator.
Check connection on PCB or actuator.
Check connection on PCB or actuator.
LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08