Hitachi RAS-25SX8 Manuel De Maintenance page 89

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Signets

Dehumidification temperature

setting

(remote control temperature

setting + SHIDD)

30'

15'

(Limit time elapsed)

(Limit time elapsed) (Forcible operation)

(Limit time elapsed)

(Forcible operation)

Fan speed set to AUTO

START/STOP switch

Operation lamp

Temperature judgment

Weak heating

Operation status

Weak heating

Heating dry

Room temperature category

Category 1

Category 2

Category 1

MED

Indoor unit

LOW

SILENT

15"

30"

Outdoor unit

Latch-type reversing valve

Room two-way valve

Open

90"

ＷＡＲＬＯＷ１

ＳＴＡＲＣＰＬ

ＷＡＲＬＯＷ１・２

ＷＡＭＤＲＹ１・２・３

ＷＡＲＬＯＷ２

DMIN

Notes:

(1) The product determines the room temperature category and external temperature category as shown in Tables 1, 2, and 3 according to the room temperature and

external temperature, and performs control as shown in Tables 4 and 5.

(2) For the outdoor unit, its operation pattern is controlled as shown in Table 6 according to the room temperature category and external temperature category.

(3) If the operation status shown in Table 5 makes a state transition depending on the changes in room temperature or external temperature, the product will perform cycle

balancing with a compressor stop time as shown in Table 7.

(4) The operation time with the operation status in "weak heating" is up to 30 minutes. If the room temperature does not rise to room temperature category 2 after that time

limit has elapsed, the product will forcibly perform a "heating dry" operation for 15 minutes. (If the temperature does not rise to the room temperature setting, the product

will repeat "weak heating" and "heating dry.")

(5) When the external temperature ≧ 27℃, the operation in the heating region is inhibited. (The heating region will become a heating dry region.)

(6) When the temperature judgment is low humidity in room temperature category 2, the product will be stopped. (The compressor stop time at that time is 3 minutes or

more.) Provided that the product will not stop in clothes drying mode.)

(7) The temperature setting for dehumidifying operation must be set to the room temperature measured at the time of operation startup. Provided that the lower limit is 13℃

and the upper limit is 26 ℃. The fan speed is MED.

(8) The temperature setting for drying clothes must be the room temperature at the time of operation startup. Provided that the lower limit is 20℃ and the upper limit is 26℃.

The fan speed is HI.

(9) Dew control is operated in room temperature category 2 (WAMDRY1) only. The product will not stop even at low temperature. Weak heating will be activated at a room

temperature of 10℃ or less. The fan speed is MED.

(10) The humidity setting is about 50% in standard mode, about 40% in powerful mode, and about 60% in sleep mode.

(11) In room temperature category 2 or 3, the difference from the room temperature setting and humidity will cause the outdoor unit and compressor speed to be corrected

between C and J as shown in Table 6. Provided that, if the external temperature ≧ 29℃, the lower limit will be H.

(12) If the product is stopped in "heating dry" or "cooling dry," the outdoor unit will run for 30 seconds with the outdoor unit pattern J.

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Dehumidifying operation

Room Temperature

３０ '

１５ '

(Limit time elapsed)

(Forcible operation)

High humidity

Cooling dry