18 Troubleshooting
Installation and operation manual
38
LRYELRNUN5A7Y1
CO
₂
Conveni-Pack outdoor unit and capacity up unit
4P605461-1B – 2020.08
Main code
LRYEN10*
LRNUN5*
Cause
Solution
O
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)
Check connection on PCB or actuator.
O
O
Malfunction of suction temperature sensor
For LRYEN10*:
▪ (R21T) - A1P (X29A)
▪ (R22T) - A1P (X23A)
▪ (R23T) - A2P (X29A)
For LRNUN5*:
▪ (R2T) - A1P (X29A)
Check connection on PCB or actuator.
O
O
Malfunction of the gas cooler outlet
temperature thermistor
For LRYEN10* and LRNUN5*:
▪ (R4T) – A1P (X35A)
Check connection on PCB or actuator.
O
O
Malfunction of the economizer outlet
temperature thermistor
For LRYEN10*:
▪ (R8T) – A1P (X30A)
For LRNUN5*:
▪ (R6T) – A1P (X35A)
Check connection on PCB or actuator
O
O
Malfunction of the liquid (after sub-cool)
temperature thermistor
For LRYEN10*:
▪ (R7T) – A1P (X30A)
For LRNUN5*:
▪ (R7T) – A1P (X35A)
▪ (R5T) – A1P (X35A)
Check connection on PCB or actuator.
O
O
Malfunction of high pressure sensor
For LRYEN10*:
▪ (S1NPH) – A2P (X31A)
For LRNUN5*:
▪ (S1NPH) – A1P (X31A)
Check connection on PCB or actuator.
O
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)
Check connection on PCB or actuator.
