Daikin 3MKS50DVM, Service Manual

Page: 130 / 403

Si12-619A Control Specification
Function and Control 117
3.16.5 Cooling / Heating Mode Lock
Use the S15 connector to set the unit to only cool or heat.
Setting to only heat (H): Short-circuit pins 1 and 3 of the connector <S15>.
Setting to only cool (C): short-circuit pins 3 and 5 of the connector <S15>.
The following specifications apply to the connector housing and pins.
JST products Housing: VHR-5N
Pin: SVH-21T-1, 1
Note that forced operation is also possible in COOL / HEAT mode.
3.16.6 ECONO-mode-proof Setting (E series 50-58 class, 80-100 class)
Outline When installing in hotels, you can make ECONO mode ineffective on the outdoor unit.
Operation The ECONO mode can be switched over between "effective" and "ineffective" by pressing the
forced operation switch (SW1) and wiring error check switch (SW3) at the same time and
holding them for 5 seconds while the compressor is stopped. The LEDs are lit in turn for 15
seconds to show the ECONO mode status.
The factory setting is "effective".
COOL mode (C)
HEAT mode (H)
5<C>3<H>1
(R1397)
effective
→
ineffective ineffective
→
effective
LED flashing order 4
→
3
→
2
→
1 1
→
2
→
3
→
4