Daikin 3MKS50E3V1B Service Manual page 133

SiBE121135
4.12.11Target 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.
Function and Control
SC
(Subcool)
Target discharge pipe temperature
Actual discharge pipe temperature
Previous discharge pipe temperature
The target discharge pipe
temperature is set as to become the
aiming SH.
The inclination does not change
depending on the operating condition.
SH
(Superheat)
Control Specification
(R14213)
121