Daikin VRV EMERION REYQ-AATJA Service Manual page 72

Refrigerant Circuit (Piping Diagrams)
No. in
Electric
piping
symbol
diagram
Thermistor
(36) R5T (Suction pipe before
accumulator)
Thermistor
(37) R6T (Heat exchanger right upper
liquid pipe)
Thermistor
(38) R7T (Heat exchanger right lower
liquid pipe)
Thermistor
(39) R8T
(Heat exchanger right deicer)
Thermistor
(40) R9T (Heat exchanger right lower gas
pipe)
(41) R10T Thermistor (Receiver inlet)
Thermistor
(42) R11T (Subcooling heat exchanger
liquid pipe)
Thermistor
(43) R12T (Subcooling heat exchanger
gas pipe)
(44) R14T Thermistor (Subcooling injection)
(45) R15T Thermistor (M1C discharge pipe) Used to detect discharge pipe temperature.
Thermistor (M1C body)
(46) R16T
(47) R17T Thermistor (M2C discharge pipe) Used to detect discharge pipe temperature.
Thermistor (M2C body)
(48) R18T
(49) R19T Thermistor (Compressor suction) Used to detect suction pipe temperature.
(50) R20T Thermistor (Box air)
Thermistor
(51) R21T
(Heat exchanger left gas pipe)
Thermistor
(52) R22T
(Heat exchanger left liquid pipe)
Thermistor
(53) R23T
(Heat exchanger left deicer)
65
Name
Used to detect temperature of the suction pipe before accumulator.
This detects temperature of liquid pipe for air heat exchanger.
Used to detect liquid pipe temperature of air heat exchanger. Used to make
judgements on defrost operation.
This detects temperature of gas pipe for air heat exchanger.
Used to detect liquid pipe temperature of receiver inlet.
This detects temperature of liquid pipe for subcooling heat exchanger.
This detects temperature of gas pipe for subcooling heat exchanger.
Detects compressor surface temperature, this switch is activated at surface
temperature of 120°C (248°F) or more to stop the compressor.
Detects compressor surface temperature, this switch is activated at surface
temperature of 120°C (248°F) or more to stop the compressor.
Detects the air temperature inside the electrical component box.
This detects temperature of gas pipe for air heat exchanger.
This detects temperature of liquid pipe for air heat exchanger.
Used to detect liquid pipe temperature of air heat exchanger. Used to make
judgements on defrost operation.
SiUS372201EB
Function
Part 2 Refrigerant Circuit