Daikin VRV EMERION REYQ-AATJA Service Manual page 276

Field Setting from Outdoor Unit
[2-79]:
Heat pump lockout
release differential
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.
Activation of high pressure switch
Activation of low pressure sensor
Compressor motor lock
Compressor damage alarm
Outdoor fan motor abnormality
Electronic expansion valve coil abnormality
Four way valve abnormality
Opposite air conditioning alarm
Box air thermistor abnormality
Harness abnormality (between outdoor unit main PCB and inverter PCB)
Outdoor fan PCB abnormality
Outdoor air thermistor abnormality
Discharge pipe temperature abnormality
Wet alarm
Branch Selector unit electronic expansion valve abnormality
Discharge pipe thermistor abnormality
Compressor body thermistor abnormality
Compressor suction thermistor abnormality
Suction pipe before accumulator thermistor abnormality
Heat exchanger deicer thermistor abnormality
Heat exchanger gas pipe thermistor abnormality
Receiver inlet thermistor abnormality
Subcooling heat exchanger liquid pipe thermistor abnormality
Subcooling injection thermistor abnormality
Heat exchanger liquid pipe thermistor abnormality
Subcooling heat exchanger gas pipe thermistor abnormality
Receiver gas purge thermistor abnormality
Electrical box air outlet thermistor abnormality
High pressure sensor abnormality
Low pressure sensor abnormality
Inverter PCB abnormality
Inverter radiation fin temperature rise abnormality
Compressor instantaneous overcurrent
Compressor overcurrent
Compressor startup abnormality
Transmission error between inverter and outdoor unit main PCB
269
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.
Fahrenheit (°F)
0
1 (default) 10
2 15
Error contents
Celsius (°C)
5 2.8
5.6
8.3
SiUS372201EB
Error code
(Auto backup possible)
E3
E4
E5
E6
E7
E9
EA
H1
H3
H7
H9
F3
F4
F9
J3
J5
J6
J7
J8
J9
JA
JC
L1
L4
L5
L8
L9
LC
Part 5 Field Settings and Test Operation