Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 75

Control Specification
3.12.11Target Discharge Pipe Temperature Control
The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger
temperature, and the outdoor electronic expansion valve opening is adjusted so that the actual
discharge pipe temperature becomes close to the target discharge pipe temperature. (Indirect SH
(superheating) control using the discharge pipe temperature)
The outdoor electronic expansion valve opening and the target discharge pipe temperature are
adjusted every 20 seconds. The target discharge pipe temperature is controlled by indoor heat
exchanger temperature and outdoor heat exchanger temperature. The opening degree of the
outdoor electronic expansion valve is controlled by the followings.
 Target discharge pipe temperature
 Actual discharge pipe temperature
 Previous discharge pipe temperature
67
SC
(Subcool)
(Superheat)
The target discharge pipe
temperature is set as to become the
aiming SH.
The inclination does not change
depending on the operating condition.
SH
SiUS12-928_B
(R14213)
Function and Control