SiUS041829E
Field Settings
Part 7 Trial Operation and Field Settings
131
Reference
Caution
Caution
4.4 Facility Setting (cooling at low outdoor temperature)
Outline
This function is limited only for facilities (the target of air conditioning is equipment such as
computers). Never use it in a residence or office (the space where there is a human).
Details
Cutting jumper J6 on the outdoor unit PCB will extend the operation range to –10°C (14°F).
Installing an air direction adjustment grille (sold separately) will further extend the operation
range to –20°C (–4°F). In these cases, the unit will stop operating if the outdoor temperature
falls below –20°C (–4°F), restarting once the temperature rises above this level.
1. Remove the top plate of the outdoor unit. (09/12 class: 3 screws, 18 class: 6 screws)
2. Remove the front plate. (09/12 class: 4 screws, 18 class: 8 screws)
3. Cut the jumper J6 of the PCB inside.
For the location of the jumper, refer to pages 20, 21.
If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind,
provide a windbreak wall.
Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off
when using facility settings.
Do not place humidifiers or other items which might raise the humidity in rooms where facility
settings are being used.
A humidifier might cause dew jumping from the indoor unit outlet vent.
Cutting jumper 6 (J6) sets the indoor fan tap to the highest position. Notify the user about this.
Replace the remote controller if you cut a jumper unintentionally
.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.
Summary of Contents for RX09RMVJU9
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 ...
