![background image](http://html2.mh-extra.com/html/daikin/ftxr-t-series/ftxr-t-series_service-manual_3655463059.webp)
SiUS041829E
Control Specification
Part 4 Functions and Control
55
3.11 Electronic Expansion Valve Control
Outline
The following items are included in the electronic expansion valve control.
Electronic expansion valve is fully closed
1. Electronic expansion valve is fully closed when turning on the power.
2. Pressure equalizing control
Open Control
1. Electronic expansion valve control when starting operation
2. Electronic expansion valve control when the frequency changes
3. Electronic expansion valve control for defrosting
4. Electronic expansion valve control when the discharge pipe temperature is abnormally high
5. Electronic expansion valve control when the discharge pipe thermistor is disconnected
Feedback Control
Target discharge pipe temperature control
Details
The followings are the examples of electronic expansion valve control which function in each
operation mode.
R4003560
: Available
: Not available
Control
Stat
u
s
Starting operation control
Control when the freq
u
ency changes
Target discharge pipe temperat
u
re control
Discharge pipe thermistor disconnection control
High discharge pipe temperat
u
re control
Defrost control (heating only)
Press
u
re eq
u
alizing control
Opening limit control
Power on ; Compressor stop
Operation start
Freq
u
ency change
u
nder starting control
D
u
ring target discharge pipe temperat
u
re control
Freq
u
ency change
u
nder target discharge pipe
temperat
u
re control
Discharge pipe thermistor disconnection
Freq
u
ency change
u
nder discharge pipe thermistor
disconnection control
D
u
ring defrost control
Summary of Contents for FTXR-T Series
Page 17: ...SiUS041829E Part 2 Specifications 13 1 Specifications 14 Part 2 Specifications...
Page 125: ...SiUS041829E Check Part 6 Service Diagnosis 121 18 class R25105 1 2 3 4 Multimeter...
Page 127: ...SiUS041829E Check Part 6 Service Diagnosis 123 18 class R20704 W V U DC_P1 DC_N1...
Page 143: ...SiUS041829E Operation Limit Part 8 Appendix 139 4 Operation Limit RX09 12 18RMVJU9 3D092209E...