Facility Setting (Cooling At Low Outdoor Temperature) - Daikin FTXM-K Series Service Manual

Field Settings
4.3

Facility Setting (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 (the space where there is a human).
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.
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
2. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and
3. Do not place humidifiers or other items which might raise the humidity in rooms where facility
4. Cutting the jumper sets the indoor fan tap to the highest position.
113
20/25/35 class
Main PCB
Cut the jumper J4.
42/50 class
direct wind, provide a windbreak wall.
off when using facility settings.
settings are being used.
A humidifier might cause dew condensation from the indoor unit outlet vent.
S40
S2
S90
(R18253)
Cut the jumper J6.
(R21209)
Trial Operation and Field Settings
SiBE041434E