Hitachi RAM-60QH4 Manuel De Service page 50

Dehumidifying
Room temperature judgement
Room temperature
Cooling preset
temperature
Start / Stop Switch
Operation lamp
Thermostat judgement
Hi
Indoor fan Med 5 min. OFF/1 min. ON
Lo
15sec.
Outdoor fan
Reversing valve
1min.
Start rotation
speed
Notes:
(1) The indoor fan is operated in the "Lo" mode, OFF for 5 minutes and ON for 1 minute, repeatedly according to the humidity judgement when
the thermostat is turned OFF.
(2) The commpressor is operated forcedly for 3 minutes after operation is started.
(3) The minimum ON time and OFF time of the compressor are 3 minutes.
At the start of operation, the thermostat will be off when room temperature ≦ setting temperature –1.33°C; the thermostat will be on when room
(4)
temperature ≧ setting
temperature – 0.66°C.
(5) The following procedure is performed to prevent excessive cooling during operation other than start. However, this procedure applies only when the
thermostat is intermittent:
･ Whether THERMO ON is to continue or not depends on the thermal condition when the 3-minute forced operation ceases.
① "THERMO ON continues" when room temperature ≧ setting temperature +1°C: (The THERMO operation value is usually the same as that at "start of
operation")
② "Forced THERMO OFF" when room temperature < setting temperature +1°C: (The same THERMO operation value as that at "start of operation" is
usually used for recovery)
Therefore, if the air-conditioner is stabilized under this thermal condition, it will enter intermittent operation, which is "3-minute operation/3-minute stop".
(6) Compressor speed is determined by instruction sent from indoor unit and corrected by outdoor unit according to such factors as capacity, fan speed,
number of units being operated, outdoor temperature, etc.
15sec.
1min.
Dehumidifying Sleep Operation
Set to 7 hours
Sleep key
Operation lamp
[SLEEP] on the remote
controller is lit
Timer lamp
Hi
Med
Indoor fan
Lo
See besic operation
Silent
Sleep
Outdoor fan
facing up
Vertical air
deflector Horizontal
Shut
Compressor speed
Notes:
(1) The sleep operation starts when the sleep key is pressed.
(2) When the sleep key is set, the indoor fan is set to "sleep silent" (FDOY_M or AFDOY).
(3) The indoor fan speed does not change even when the fan speed mode is changed.
(4) If the set time is changed during sleep operation, all data including set temperature, time, etc. is cleared and
restarted.
(5) If sleep operation is canceled by the cancel key or sleep key, all data is cleared.
(6) If the position of air deflector is being operated using remote control, the operation will be performed at any desired
position of air deflector.
7hr
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