FILE NO. SVM-10020

Item

Operation flow and applicable data, etc.

Description

1.Basic 2. Cooling/Heating operation

operation

The operations are performed in the following parts by controls according to cooling/heating conditions.

1)Receiving the operation ON signal of the remote controller, the cooling or heating operation signal starts being transferred form the indoor controller to the outdoor unit.

2)At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan motor control” and the louver according to the contents of “9. Louver control”, respectively.

3)The outdoor unit controls the outdoor fan motor, compressor, pulse Modulating valve and 4-way valve according to the operation signal sent from the indoor unit.

 

 

 

Operation ON

 

 

Setup of remote controller

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor fan motor control / Louver control / Operation Hz

 

 

 

Indoor unit control

 

 

 

 

 

 

 

Control (Requierment)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sending of operation command signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor revolution control / Outdoor fan motor control /

 

 

 

 

 

 

 

 

 

Operation Hz control (Include limit control)

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor unit control

 

 

4-way valve control

 

In cooling operation: ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[

In heating operation: OFF ]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pulse Modulating valve control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3. AUTO operation

 

 

 

 

 

 

 

 

1) Detects the room temperature (Ta) when

 

 

Selection of operation mode

 

 

the operation started.

 

 

 

 

2) Selects an operation mode from Ta in

 

 

As shown in the following figure, the operation starts by

 

 

 

selecting automatically the status of room temperature

 

the left figure.

 

 

(Ta) when starting AUTO operation.

 

 

3) Fan operation continues until an

 

 

*1. When reselecting the operation mode, the fan

 

 

 

 

 

 

operation mode is selected.

 

 

 

speed is controlled by the previous operation mode.

4) When AUTO operation has started

 

 

 

 

 

 

 

 

 

 

 

 

 

 

within 2 hours after heating operation

 

 

Ta

 

 

 

 

 

 

 

 

 

 

stopped and if the room temperature is

 

 

 

 

 

 

 

 

 

 

 

 

68°F (20°C) or more, the fan operation is

 

 

 

 

 

 

 

 

 

 

 

 

 

°C

 

 

Cooling operation

 

 

 

 

 

 

 

 

performed with ”Super Ultra LOW” mode

 

 

Ts + 1

 

 

 

 

 

 

 

 

 

 

for 3 minutes.

 

 

 

 

Monitoring (Fan)

 

 

Then, select an operation mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5) In AUTO mode, either cooling or heating

 

 

Ts – 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

operation will be selected. When room

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating operation

 

 

temperature reach set temperature

 

 

 

 

 

 

 

 

commpressor will stop. In case that the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

compressor stops for 15 minutes, the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUTO mode will reselect cooling or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

heating operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4. DRY operation

 

 

 

 

 

 

 

 

1) Detects the room temperature (Ta) when

 

DRY operation is performed according to the difference

 

 

 

the DRY operation started.

 

between room temperature and the setup temperature as

2) Starts operation under conditions in the

 

shown below.

 

 

 

 

 

 

 

 

left figure according to the temperature

 

In DRY operation, fan speed is controlled in order to

 

 

 

 

 

difference between the room tempera-

 

prevent lowering of the room temperature and to avoid air

ture and the setup temperature (Tsc).

 

flow from blowing directly to persons.

 

 

Setup temperature (Tsc)

 

°F [˚C]

 

 

 

 

 

 

 

 

 

 

 

= Set temperature on remote controller

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Ts) + 0~1.0°C (0 to 2°F)

 

 

Ta

 

 

 

 

 

L– (W5)

 

 

 

3) When the room temperature is lower

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2°F (1°C) or less than the setup

 

+2.0 (1.0)

 

 

 

 

 

 

(W5+W3) / 2

 

 

 

temperature, turn off the compressor.

 

 

 

 

 

 

 

 

 

 

 

 

 

+1.0 (0.5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUL (W3)

 

 

 

 

 

 

 

Tsc

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan speed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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