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SiUS331708EA
Outline of Control (Indoor Unit)
Functions and Control
78
6.11 Heater Control (Except FXTQ-TA Models)
Note:
Optional PCB KRP1B ... is required.
The heater control is conducted in the following manner.
Normal control
While in heating, the heater control (ON/
OFF) is conducted as shown on the right.
Overload control
When the system is overloaded in
heating, the heater will be turned
OFF in the following 2 manners.
(1) The heater control (ON/OFF) is
conducted through the liquid
pipe temperature (R2T) of the
indoor unit.
(2) The heater control (ON/OFF) is
conducted by converting the
heater temperature into the
condensing pressure equivalent
saturated temperature (Tc)
according to the temperature
detection through the high
pressure sensor (S1NPH) of the outdoor unit.
Fan residual
operation
When the heater turns OFF, in order to prevent the activation of the thermal protector, the fan
conducts residual operation for a given period of time after the heater turns OFF. (This operation is
conducted regardless of with or without heater equipped.)
Residual operation time: 100 seconds on ceiling suspended type or 60 seconds on other types
ON
Set temperature
OFF
2˚C
(3.6˚F)
2˚C
(3.6˚F)
ON
43˚C (109.4˚F)
OFF
50˚C (122˚F)
Liquid pipe temperature
ON
50˚C (122˚F)
60˚C (140˚F)
OFF
Condensing pressure
equivalent saturated
temperature
Summary of Contents for RXSQ24TAVJU
Page 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
Page 290: ...Wiring Diagrams SiUS331708EA 277 Appendix RXSQ48TAVJU 3D109546A...
Page 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
Page 295: ...SiUS331708EA Wiring Diagrams Appendix 282 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 298: ...Wiring Diagrams SiUS331708EA 285 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 300: ...Wiring Diagrams SiUS331708EA 287 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU 3D110467B...
Page 301: ...SiUS331708EA Wiring Diagrams Appendix 288 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 302: ...Wiring Diagrams SiUS331708EA 289 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 303: ...SiUS331708EA Wiring Diagrams Appendix 290 FXAQ07 09 12 18 24PVJU 3D075354C...
Page 309: ...SiUS331708EA Wiring Diagrams Appendix 296 VAM1200GVJU 3D073270D...