Basic Mode - Hitachi RAK-18PSPA Service Manual

BASIC MODE

MODEL RAK-18/ 25/ 35PSPA
Operation mode
F a n
Basic operation of
start / stop switch
Off-timer
On-timer
Changes from "Hi" to "Med"
or "Lo" depending on room
temperature.
Auto
Temperature
set for
cooling
Thermo judgment
Compressor
Hi
Med
Lo
Silent
1. Runs at "Hi" until first
thermo off after operation
is started.
2. Runs at "Lo" when
thermo is off.
Operates at "Hi" regardless of Set to "Ultra-Hi" when the
Hi
the room temperature. compressor runs at maximum
speed, and to "Hi" in other
modes.
Operates at "Med" regardless Same as at left.
Med
of the room temperature.
Lo Operates at "Lo" regardless of Same as at left.
the room temperature.
Operates at "Silent" regardless Same as at left.
Silent
of the room temperature.
Basic operation of Performs only fan operation at See page 38.
temperature controller the set speed regardless of
the room temperature.
Sleep operation Enters sleep operation after Same as at left.
(with sleep button ON) set as on the left. See page 40.
Action during sleep operation
silent (sleep) operation.
Leave home
C o o n i l g D e h u m d i y f i n i g
Start Stop Start
Start / stop switch
Operation lamp
Start / stop switch
Reserve switch
Cancel switch
Operation lamp
Timer lamp
Timer memory
(Off-timer during stop)
Start / stop switch
Reserve switch
Cancel switch
Operation lamp
Timer lamp
Timer memory
(Change in reserved time)
Set to "Silent", "Lo", "Med", "Hi", "ultra-Hi" or "stop" depending on the room temperature,
time and heat exchange temperature. Set to "stop" if the room temperature is 18˚C in the
"Silent" mode other than during preheating (cooling is recovered at 18.33˚C).
Room temperature
On On
Off
(Compressor stopped
3'
forcibly for 3 minutes)
Set to "Silent", "Lo", "Med", "Hi", "Ultra-Hi" or "Stop" depending on the room
temperature and time.
Set to "Stop" if the room temperature is 18℃ in the "Silent" mode other
than during preheating (cooling is recovered at 18.33℃).
Set to "Ultra-Hi" when the compressor is running at maximum speed during
hot dash or when recovered from defrosting.
Set to "Silent", "Lo", "Med" or "Stop" depending on the room temperature and time.
Set to "Stop" if the room temperature is 18℃ in the "Silent" mode other than during
preheating (cooling is recovered at 18.33℃).
Set to "Lo" in modes other than Set to "Silent", "Lo", or "Stop" depending on the
when the compressor stops. room temperature and time.
Set to "Stop" if the room temperature is 18℃
in the "Silent" mode other than during
preheating (cooling is recovered at 18.33℃).
Set to "Silent" in modes other than
The fan speed is controlled by the heat
when the compressor stops.
exchanger temperature; the overload control is
executed as in the following diagram:
See page 40. See page 42.
Same as at left. Same as at left.
See page 40. See page 42.
See page 44.
H e t a n i g
Stop
(Change in reserved time)
(On-timer during operation)
When the compressor is running at maximum speed
during hot dash or when recovered from defrosting. In modes other than
left.
Heat exchanger temperature
36
32
29
35.0
30.0
26.0
23.0
High or ultra-High
(Fan speed set to
"AUTO")
Med
Low
Silent
Heat exchanger temperature
KAFON
KAFOF
On On
Off
"Med" with overload
"Lo"
36
Operating mode is judged by room tempertature.
(1) Judging by room temperature
Operating mode at start up is judged (initial judgment).
(a) Conditions for judgment (any of the followings).
・ When auto operation is started after the previous auto mode operation.
・ When auto operation is started after the previous manual mode operation.
・ When the operating mode is switched to auto while operating at manual mode.
(b) Judging method
・ [ Cooling ] : Room temperature ≧ Remote controller setting
・ [ Heating ] : Room temperature ＜ Remote controller setting
Cooling
[ Room temperature setting of
remote controller ]
Heating
(2) Judging operating mode change during operation (Continuous judgment).
(a) Conditions for judgment
・ The mode is reviewed at interval time.
＊Interval time as below
・ The first interval time : 5 minutes
・ The second interval time : 31 minutes
・ On and after the third interval time : 55 minutes
(b) Judging method
・ Judge by setting the hysteresis on the final preset temperature.
The final preset temperature is the actually targeted preset temperature which is sum of basic preset
temperature and each type of shift value.
(e.g. preset temperature correction value, powerful shift value, eco shift value, eco sleep shift value, etc.)
[ Currently cooling ]
・ Room temperature ≦
・ Room temperature ＞
[ Currently heating ]
・ Room temperature ≧
・ Room temperature ＜
Heating
final preset temperature
Same as at left.
Performs the sleep operation of each operation mode.
Notes:
1. The speed set of rotaion for the fan motor in each operation mode are as shown in Table 1.
2. The set room temperatures in the diagram include the shift values in Table 2.
Auto
+3
+3
Cooling
+3