NO.

Item

 

 

Overview of specifications

 

Remarks

3

Room temperature

(2) The set temperature for HEAT operation can be corrected by code Heat intake temperature

 

control

No. 06.

 

 

 

 

 

 

shift

 

 

 

 

 

 

 

 

 

 

(When unit’s temperature

 

 

 

Set data

0

2

4

6

 

 

 

sensor is used)

 

 

 

 

 

 

 

 

 

 

 

 

 

Correction of set temp.

+0°C

+2°C

+4°C

+6°C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Factory setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Set data

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*When use of remote controller sensor is set (with DN32), no correction is performed.

4

Capacity auto

(1) Issues instruction of operating frequency to outdoor unit according

 

 

control

to the difference between Ta and Ts.

 

 

(GA control)

(2) COOL operation

 

 

 

Calculates room temp. difference between Ta and Ts as well as

 

 

 

room temp. variation every 90 seconds to find correction value of

 

 

 

specified operating frequency and to correct the current operating

 

 

 

frequency.

 

 

 

 

 

 

 

Ta(n)–Ts(n)

: Room temp. difference

n : Number of detection times

 

 

 

Ta(n-1)–Ta(n) : Room temp. variation

n–1 : Number of detection times

 

 

 

 

 

 

 

 

(90 seconds before)

 

 

 

(3) HEAT operation

 

 

 

 

Calculates room temp. difference between Ta and Ts as well as

 

 

 

room temp. variation every 60 seconds to find correction value of

 

 

 

specified operating frequency and to correct the current operating

 

 

 

frequency.

 

 

 

 

 

 

 

Ts(n)–Ts(n)

 

: Room temp. difference

n : Number of detection times

 

 

 

Ta(n)–Ta(n_1) : Room temp. variation

n–1: Number of detection times

 

 

 

 

 

 

 

 

(60 seconds before)

 

 

 

(4) DRY operation

 

 

 

 

The frequency correction control is the same as that for COOL

 

 

 

operation.

 

 

 

 

 

 

 

However, the maximum frequency is limited to S6 or so.

 

 

 

Note) When LOW fan speed is set, the maximum frequency is

 

 

 

 

limited to SB or so.

 

 

 

 

 

 

 

 

 

5

COOL/HEAT/

(1) Switching between COOL and HEAT is determined based on the

 

 

AUTO control

following control.

 

 

 

 

Ta

COOL

After 10 minutes pass from

 

 

 

(˚C)

 

 

 

+1.5

 

 

 

 

thermo sensor OFF,

 

 

 

 

 

 

 

operation mode changes

 

 

 

 

 

 

 

 

 

 

 

Tsc

 

 

 

(COOL ON) from HEAT (thermo sensor

Tsc : COOL set temp.

 

 

or Tsh

 

 

(COOL OFF)

 

OFF) to COOL if Ta exceeds

Tshc : HEAT set temp. +

 

 

-1.5

 

 

 

Tsh +1.5.

room temp. control/

 

 

 

 

 

 

( ) shows an example of

correction

 

 

 

 

 

 

 

 

 

 

 

 

HEAT

COOL ON/OFF.

 

 

 

 

 

 

 

 

After 10 minutes pass from

 

 

 

 

 

 

 

 

thermo sensor OFF,

 

 

 

 

 

 

 

 

operation mode changes

 

 

 

 

 

 

 

 

from COOL (thermo sensor

 

 

 

 

 

 

 

 

OFF) to HEAT if Ta lowers

 

 

 

 

 

 

 

 

below Tsc -1.5.

 

(2)The GA control after determination of operation mode follows the description in No. 4.

(3)The room temperature control and temperature correction follow the descriptions in No. 3 and No. 15.

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