Daikin VRV EMERION RXYQ-AATJA, Service Manual

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SiUS342303E Field Setting from Outdoor Unit
Part 5 Field Settings and Test Operation 208
When heat pump lockout mode has been set the auto backup function will automatically be set.
This will allow the auxiliary or secondary heat source to be automatically energized in the event of a
system failure.
Error codes capable of auto backup are listed in the table below.
Please be aware that the error codes that are not listed do not auto backup in order to protect the
unit.
[2-47]: Heat pump lockout release differential
Heat pump would be resumed when the outdoor air temperature is recovered by differential
(below) above the heat pump lockout temperature.
Heat pump lockout
release differential
Fahrenheit (°F) Celsius (°C)
0 5 2.8
1 (default) 10 5.6
2 15 8.3
Error contents
Error code
(Auto backup possible)
Activation of high pressure switch E3
Activation of low pressure sensor E4
Compressor motor lock E5
Compressor damage alarm E6
Outdoor fan motor abnormality E7
Electronic expansion valve coil abnormality E9
Position signal abnormality of outdoor unit fan motor H3
H7
Outdoor air thermistor abnormality H9
Discharge pipe temperature abnormality F3
Wet alarm F4
Discharge pipe thermistor abnormality
Compressor body thermistor abnormality
J3
Suction pipe thermistor abnormality J5
Heat exchanger deicer thermistor abnormality
Heat exchanger gas pipe thermistor abnormality
J6
Subcooling heat exchanger liquid pipe thermistor abnormality J7
Heat exchanger liquid pipe thermistor abnormality J8
Subcooling heat exchanger gas pipe thermistor abnormality
Electrical box air outlet thermistor abnormality
J9
High pressure sensor abnormality JA
Low pressure sensor abnormality JC
Inverter PCB abnormality L1
Radiation fin temperature rise abnormality L4
Compressor instantaneous overcurrent L5
Compressor overcurrent L8
Compressor startup abnormality L9
Transmission error between inverter and outdoor unit main PCB LC