SiUS341802E
Outline of Control (Indoor Unit)
Functions and Control
84
9.11 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
While 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 Aurora Series
Page 317: ...SiUS341802E Wiring Diagrams Appendix 304 RXLQ96 120TATJU 2D112581A ...
Page 318: ...Wiring Diagrams SiUS341802E 305 Appendix RXLQ72TAYDU 2D112582A ...
Page 319: ...SiUS341802E Wiring Diagrams Appendix 306 RXLQ96 120TAYDU 2D112583A ...
Page 331: ...SiUS341802E Wiring Diagrams Appendix 318 VAM1200GVJU 3D073270C ...
Page 332: ...Revision History Month Year Version Revised contents 04 2018 SiUS341802E First edition ...