Basic Mode - Hitachi RAS-50FH5 Service Manual

BASIC MODE

Operation mode
Fan
Basic operation of
start/stop switch
Off-timer
On-timer
Off -> O n
On -> Off time r
Changes from ÒHiÓ to ÒMedÓ or
ÒLoÓ depending on roo m
temperature.
Auto
Temperature set
for cooling
Thermo iudgment
Compressor
Hi
Med
Lo
1. Runs at ÒHiÓ until first thermo
off after operation is started.
2. Runs at ÒLoÓ when thermo is
off.
Hi Operates at ÒHiÓ regardless of the Set to Òultra-HiÓ when the
room temperature. compressor runs at maximum
speed, and to ÒHiÓ in other modes.
Med Operates at ÒMedÓ regardless of Same as at left.
the room temperature.
Lo Operates at ÒLoÓ regardless of the Same as at left.
room temperature.
Basic operation of Performs only fan operation at the See page 49.
temperature controller set speed regardless of the room
temperature.
Start/stop switch
Operation lamp
Hi
Med
Lo
Hi Med Lo
Sleep operation Enters sleep operation after set Same as at left
(with sleep button ON) as on the left. See page 51.
Action during sleep operation
Lo (sleep) operation
Dehumidifying
(dehumidifying operation by the
Cooling
function select button only, not including
that engaged by the dehumidify button)
Start Stop
Start/stop switch
Operation tamp
Start/stop switch
Operation tamp
Cancel switch
Operation temp
Timer tamp
Timer memory
Srart/stop switch
Reserve switch
Cancel switch
Operation temp
Timer tamp
Timer memory
(Change in reserved time)
Start/stop switch
Reserve switch
Cancel switch
Operation lamp
Timer lamp
OFF
Timer memory
(Off->On timer)
Set to Òultra-LoÓ, ÒLoÓ, ÒMedÓ, ÒHiÓ, Òultra-HiÓ or ÒstopÓ depending on the room temperature,
Changes between ÒLoÓ and ÒMedÓ
time and heat exchange temperature. Set to ÒstopÓ if the room temperature is 18 C in the
depending on the room temperature.
Òultra-LoÓ mode other than during preheating (cooling is recovered at 18.33 C).
Temperature division Fan speed
Division 1 Lo
Division 2 Lo
Med
Division 3
Division 4 Med
1. The indoor fan also stops when the
(Compressor stopped
compressor is in stop status.
forcibly for 3 minutes)
Set to ÒHiÓ in modes other than when the
Set to Òultra-LoÓ, ÒLoÓ, ÒMedÓ, ÒHiÓ, Òultra-HiÓ or ÒstopÓ depending on the room temperature, and
compressor stops. time. Set to ÒstopÓ if the room temperature is 18 C in the Òultra-LoÓ mode other than during
preheating (cooling is recovered at 18.33 C).
Set to Òultra-HiÓ when the compressor is running at maximum speed during hot dash or when
recovered from defrosting.
Set to ÒMedÓ in modes other than when the Set to Òultra-LoÓ, ÒLoÓ, ÒMedÓ or ÒstopÓ depending on the room temperature and time. Set to
compressor stops. ÒstopÓ if the room temperature is 18 C in the Òultra-LoÓ mode other than during preseating
(cooling is recovered at 18.33 C).
Set to ÒLoÓ in modes other than when the Set to Òultra-LoÓ, ÒLoÓ, or ÒstopÓ depending on the room temperature and time. Set to ÒstopÓ if
compressor stops. the room temperature is 18 C in the Òultra-LoÓ mode other than during preseating (cooling is
recovered at 18.33 C). The fan speed is controlled by the heat exchanger temperature; the
overload control is executed as in the following diagram:
See page 53. See page 55.
Same as at left Same as at left
See page 53. See page 57.
Heating
Start Stop
(Off-timer during stop) (Change in reserved time)
(On-timer during operation)
ON ON OFF ON OFF OFF ON
(On->Off timer) (On->Off timer) (Off->On timer)
during operation) during stop)
In modes other than
When the compressor is running at maximum speed
during hot dash or when recovered from defrosting. left
C
42. 66
37. 66
32. 66
29. 66
Heat exchanger
temperature
Hi or ultra-HI
(fan speed set
to “auto”)
Med
Lo
Heat exchanger temperature
KAFON
KAFOF
“Med” with overload
“Lo”
Auto
Operating mode is judged by room temperature and outdoor temperature.
(1) Judging by outdoor temperature
Operating mode is judged by outdoor temperature.
Only when the mode is not restricted by this judgment, the judgment by room temperature in the next paragraph
will be performed.
(a) Outdoor temperature 30 C : Restricted to cooling
(b) Outdoor temperature 9 C : Restricted to heating
(2) 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 1 hour has elapsed since the ope ration was stopped.
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
±
Room temperature 23 C 3 C : Cooling
±
Room temperature < 23 C 3 C : Heating
±
3 C is the fine adjustment value from the remote controller.
Judging operating mode change during operation (Continuous judgment)
(a) Conditions for judgment (any of the followings)
The mode is reviewed at every interval time.
When auto operation is started again before 1 hour has elapsed since the ope ration was stopped.
(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 the sum of the basic preset tempe rature
±
and each type of shift value (e.g. 3 C by remote controller, preset temperature correction value, powerful shift value, etc.).
[Currently cooling]
Room temperature Final preset temperature Ð3 C Change to heating
Room temperature > Final preset temperature Ð3 C Continue cooling
[Currently heating]
Room temperature Final preset temperature +2 C Change to cooling
Room temperature < Final preset temperature +2 C Continue heating
Heating
final preset temperature
Same as at left.
Performs the sleep operation of each operation mode.
Notes:
1. The speed set of rotation 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
Room
-temperature
Cooling
22 C
Heating
9 C 30 C Outdoor
temperature
Cooling
– 49 –