Daikin VRV II RXYQ5MATL, Service Manual, Page: 101 / 331

Protection Control Si39-504
90 Function
4.5 STD Compressor Overload Protection
This control is used to prevent abnormal heating due to overcurrent to the compressor resulting
from failures of STD compressor such as locking.
4.6 Injection Control (only for RXYQ5MA)
For transitional rise in discharge pipe temperature, have the liquid refrigerant flow into the
suction side to reduce the discharge pipe temperature for the compressor protection.
STD compressor ON
CT detection
current value>15.0A(YL)
or
36.0A(TL)
STD compressor OFF for 30 min.*
Demand to operate.
When occurring 3 times within 90 minutes,
the malfunction code “ E6 ” is output.
*If the power supply is reset while in
operation prohibition mode, the prohibition
timer will continue counting when the
power supply is turned ON.
SVT = OFF
SVT = ON
HTdi <107˚C HTdi >112˚C
HTdi: Correction value of the discharge pipe
temperature on the INV compressor.