Daikin VRV X RXQ6-48ANR Series, Service Manual, Page: 73 / 297

SiME341909EA Protection Control
Part 4 Functions and Control 67
6.5 Inverter Protection Control
Inverter current protection control and radiation fin temperature control are performed to prevent
tripping due to an abnormality, or transient inverter overcurrent, and fin temperature increase.
In the case of multi-outdoor-unit system, each compressor performs these controls in the
following sequence.
Inverter overcurrent protection control
This control is performed for each inverter compressor.
Radiation fin temperature control
This control is performed for each inverter compressor.
Condition
RXQ6AR RXQ8-12AR RXQ14/16AR
M1C M1C M1C M2C
A more than 17.0 A more than 27.5 A more than 17.0 A more than 27.5 A
B less than 17.0 A less than 27.5 A less than 17.0 A less than 27.5 A
C more than 17.6 A more than 27.5 A more than 17.6 A more than 27.5 A
Condition All compressors
A more than 110 °C
B less than 107 °C
C more than 114 °C
Normal control
Inverter current standby
Reduce compressor capacity
A B
When occurring 3 times within 60
minutes, the error code
L8 is
output.
C
Normal control
Fin temperature standby
Reduce compressor capacity
When occurring 4 times within 60
minutes, the error code
L4 is output.
A B
C