Field Settings
SiBE05-722EE
120
Trial Operation and Field Settings
3.2
Facility Setting Jumper (cooling at low outdoor
temperature)
Outline
This function is limited only for facilities (the target of air conditioning is equipment (such as
computer)). Never use it in a residence or office (a place where people are present).
Detail
You can expand the operation range to –15°C by cutting the jumper on the outdoor unit PCB.
Note that the operation may stop if the outdoor temperature drops below –15°C. If the outdoor
temperature rises, the operation starts again.
RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B, RXS35K2V1B, RXS25/35L2V1B
Main PCB
Caution
Replace the PCB if you accidentally cut a wrong jumper.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Caution
1. If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to
direct wind, provide a windbreak wall.
2. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and
off when using facility settings.
3. 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 condensation from the indoor unit outlet vent.
4. Cutting the jumper sets the indoor fan tap to the highest position.
RKS25/35E2V1B
Main PCB
RK(X)S25/35G2V1B
Main PCB
PCB
J1
J3
J4
J5
J6
J7
J8
S80
S80
S80
S90
S70
.
(R18373)
Cut the jumper J8.
S90
PCB
S50
S20
S10
S1
J4
J8
J9
Cut the jumper J8.
(R18374)
S70
S40
S2
S90
J5
J4
J3
(R18253)
Cut the jumper J4.