Function of Main Structural Parts
SiE12-411
86
Function and Control
2.2.2 Cooling Only Model
A Outdoor Heat
Exchanger
Thermistor (DCB)
1. An outdoor heat exchanger thermistor is used for controlling a target discharge temperature.
Set a target discharge temperature depending on an outdoor and indoor heat exchanger
temperature.
Control the electronic expansion valve opening so that the target discharge temperature can
be obtained.
2. When cooling: an outdoor heat exchanger thermistor is used for detecting a disconnected
discharge pipe thermistor.
When the temperature of the discharge piping is lower than the temperature of outdoor heat
exchanger, a disconnected discharge pipe thermistor can be detected.
B Discharge
Pipe Thermistor
(DOT)
1. Discharge pipe thermistor is used to control a discharge pipe.
If the temperature of discharge pipe (used in place of the inner temperature of the
compressor) rises abnormally, the operating frequency drops or the operation must be
halted.
2. A discharge pipe thermistor is used for detecting a disconnected discharge pipe thermistor.
C Gas Pipe
Thermistor (DGN)
1. When cooling: a gas pipe thermistor is used for gas pipe isothermal control.
Control electronic expansion valve opening so that a gas pipe temperature in each room
becomes equal.
EV
B
EV
C
EV
D
EV
A
1
Compre
ss
or
4
Exp
a
n
s
ion v
a
lve
A
B
C
D
(R24
3
6)
Summary of Contents for Super Multi NX C-Series
Page 6: ...SiE12 411 Table of Contents v Index i Drawings Flow Charts v...
Page 7: ...SiE12 411 vi Table of Contents...
Page 67: ...Specifications SiE12 411 56 Specifications...
Page 171: ...Instruction SiE12 411 160 System Configuration...
Page 225: ...Check SiE12 411 214 Service Diagnosis...
Page 295: ...SiE12 411 iv Index...
