Hitachi RAC-50FPA, Service Manual

Page: 36 / 101

Start Stop Start Stop
Start / stop switch
Operation lamp
Start / stop switch
Reserve switch
Cancel switch
Operation lamp
Timer lamp
Timer memory
(Off-timer during stop) (Change in reserved time)
Start / stop switch
Reserve switch
Cancel switch
Operation lamp
Timer lamp
Timer memory
(On-timer during operation) (Change in reserved time)
BASIC MODE
MODEL RAF- A
Operation mode
Basic operation of
start / stop switch
Off-timer
On-timer
T
imer functions
Fan speed mode (indoor fan)
Auto
Operates at "Hi" regardless of
the room temperature.
Operates at "Lo" regardless of
the room temperature.
Operates at "Silent" regardless
of the room temperature.
Performs only fan operation at
the set speed regardless of
the room temperature.
Enters sleep operation after
set as on the left.
Action during sleep operation
silent (sleep) operation.
Operates at "Med" regardless
of the room temperature.
Hi
Med
Lo
Silent
Basic operation of
temperature controller
Sleep operation
(with sleep button ON)
Leave home
Changes from "Hi" to "Med"
or "Lo" depending on room
temperature.
Set to "Ultra-Hi" when the
compressor runs at maximum
speed, and to "Hi" in other
modes.
Same as at left.
Same as at left.
Same as at left.
Set to "Lo" in modes other than
when the compressor stops.
Set to "Silent" in modes other than
when the compressor stops.
Same as at left.
See page 40.
See page 38.
Same as at left.
See page 40. Same as at left.
See page 42.
See page 44.
Same as at left.
Performs the sleep operation of each operation mode.
See page 40.
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 ℃ ).
See page 42.
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.
Set to "Silent", "Lo", 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
℃
).
The fan speed is controlled by the heat
exchanger temperature; the overload control is
executed as in the following diagram:
Heat exchanger temperature
KAFON
KAFOF
"Med" with overload
"Lo"
On On
Off
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).
1. Runs at "Hi" until first
thermo off after operation
is started.
2. Runs at "Lo" when
thermo is off.
When the compressor is running at maximum speed
during hot dash or when recovered from defrosting.
In modes other than
left.
Room temperature
Temperature
set for
cooling
Thermo judgment
On
Off
On
Hi
Med
Compressor
3’
Lo
Silent
forcibly for 3 minutes)
(Compressor stopped
35.0
26.0
High or ultra-High
(Fan speed set to
“AUTO”)
Heat exchanger temperature
Med
Low
Silent
36
32
29
30.0
23.0
50RP
36
g n i t a e H g n i y f i d i m u h e D g n il o o C n a F Auto
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
(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 : 30 minutes
·
The second interval time : 50 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 ＜
Cooling
Heating
Heating
Cooling
final preset temperature
[ Room temperature setting of
remote controller ]
+3
+3
-2
-2
-2
+3