Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 61

Function of Thermistor
(5) Liquid Pipe
1. When only one indoor unit is in heating, the liquid pipe thermistor is used for subcooling control.
Thermistor
2. In heating operation, the liquid pipe thermistor is used for liquid pipes isothermal control. The
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The actual subcool is calculated with the liquid pipe temperature and the maximum indoor heat
exchanger temperature. The system controls the outdoor electronic expansion valve openings
to obtain the target subcool.
system controls the outdoor electronic expansion valve opening so that the liquid pipe
temperatures in each room becomes equal.
SiUS12-928_B
Function and Control