Daikin VRV RXYMQ-A Series Service Manual page 280

Check
4. Judgment criteria of superheat operation:
Reference
CHECK 7 Refer to page 279.
Reference
CHECK 8 Refer to page 280.
274
(1) Suction gas superheating degree: 10°C and over.
(2) Discharge gas superheating degree: 45°C and over, except immediately after
compressor starts up or is running under dropping control.
(Use the above values as a guide. Depending on the other conditions, the unit may
be normal despite the values within the above range.)
SiME332106E
Part 6 Service Diagnosis