Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 1037

(7) Value shift adjustment of room air temperature detection in heating
Under the standard specifications, the room temperature is adjusted at the setting temperature by controlling the indoor unit
capacity based on the setting temperature of thermostat and the suction air temperature.
However, where the unit is installed in the ceiling and warm air tends to stay around the ceiling, temperature in the living space may
not be adjusted at the setting temperature. In such occasion, it is recommended to change the setting of dip switch SW5-2, which is
found on the PCB of the indoor unit, to ON position so that the capacity control is tripped at +3 above the setting temperature of
thermostat and thus the heating feeling will improve.
Heating Heating High High
capacity capacity
-1 +1
Thermostat setting temperature
Standard Standard
Note (1) Refer to page 911 for position of SW
(8) Auto Swing Control (Excepted FDR, FDUM, FDFL, FDFU models)
(a) Have a louver motor to move the louvers up and down for the so called "AUTO SWING" function.
(b) The louver auto swing starts when the AUTO SWING switch is pressed once and stops when the AUTO SWING switch is
pressed again. The louver position is displayed on the LCD on the remote controller. During auto swing, the
position displayed on the LDC changes, but the positions of the louvers and the display are not coordinated. (The louvers
swing3-4 times per minute but the display changes once per second.)
(c) Stopping the louvers
When the AUTO SWING switch is pressed to stop the louver movement, the LCD louver-position display stops and the louvers
stop when they come to the position displayed on the LCD. There are four louver stop position on the LCD. (When jumper wire
J2 on the indoor unit printed circuit borad is cut, the louvers stop immediately at the AUTO SWING switch is pressed to stop
them and the LCD display changes to show this posiition. Refer to page 180 for position of jumper wire J2.
(d) Movement of louver when the power supply to the controller controlling 4 positions of the louver is switched on.
When power supply is switched on, the louver will automatically swing about 2 times (without operating remote controller).
This is an action for the microcomputer to confirm the louver position in order to input the cycle of the luver motor (LM) to the
microcomputer with the limit switch (LS) pushing the louver motor (LM). If the LS action is not input to the microcomputer, the
louver will stop within 1 minute after the power supply is switched on and will not move from then on.
(e) Keeping the louvers horizontal during heating
While HOT KEEP is displayed (during hot start operation or when the thermostat has turned off during heating operation),
the louvers stay in the horizontal position to prevent cold drafts, independent of the setting of the AUTO SWING switch (auto
swing or stop). The louver position display of LCD displays continuously the original position before this control operation.
When the HOT KEEP display goes out, both the louver and the LCD display return to their previous positions. (However,
after the power supply to the unit is switched on, the louvers swing two times as a check of the power source frequency,
regardless of the setting of the ON/OFF or AUTO SWING switches.)
(9) FILTER sign
When the operation time (time when the ON/OFF switch is turned to ON) is counted up at 600 hours
controller flickers.
This condition can be reset any time with the "Filter reset" switch. It is effective also to turn power OFF to reset.
Note (1) The function is invalidated if the jumper wire (J4) is opened. (See page 911 for the location of PCB.)
Low Low
Heating Heating
capacity capacity
Heating High
capacity
Low
+2 +4
Thermostat setting temperature
With SW5-2 "ON"
(1) , the filter sign on the remote
FDC-HKXR
Heating
capacity
1035