Inverter Protection Control - Daikin VRV X RXQ6-48ANR Series Service Manual

SiME341909EA
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.
Part 4 Functions and Control
Normal control
A
Reduce compressor capacity
Inverter current standby
RXQ6AR
Condition
M1C
A more than 17.0 A
B less than 17.0 A
C more than 17.6 A
Normal control
A
Reduce compressor capacity
Fin temperature standby
Condition All compressors
A more than 110 °C
B less than 107 °C
C more than 114 °C
B
C
RXQ8-12AR
M1C
more than 27.5 A
less than 27.5 A
more than 27.5 A
B
C
When occurring 4 times within 60
minutes, the error code L4 is output.
Protection Control
When occurring 3 times within 60
minutes, the error code L8 is
output.
RXQ14/16AR
M1C
more than 17.0 A
less than 17.0 A
more than 17.6 A
M2C
more than 27.5 A
less than 27.5 A
more than 27.5 A
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