2. Processes and functions

Section

1

2

3

4

2-11 4-Way Valve, Solenoid Control

The basic function of the 4-way valve is to direct the refrigerant in the correct direction according to the Operation Mode (COOLING or HEATING) selected.

The following two charts show conditions of the controls and functions listed in the left hand column when the solenoid is ON or OFF. Chart (A) on this page shows the relationships when the temperature control is in NORMAL mode, and Chart (B) on the next page shows the relationships when the remote controller is set to AUTO mode.

(A) Normal Control Mode

POWER SOURCE OFF

 

ON

 

 

 

 

 

OPERATION

 

ON

OFF

 

 

ON

 

 

BUTTON

 

 

 

 

 

 

 

 

 

 

 

 

 

MODE

COOL

 

 

 

COOL

 

 

 

 

 

 

 

 

 

 

 

 

 

BUTTON HEAT

 

HEAT

 

 

 

HEAT

 

 

 

 

 

2

 

 

 

 

 

 

 

 

3 MINUTES

 

TURN ON

THERMO OFF

THERMO OFF

 

 

 

 

TURN OFF

 

THERMO

 

THERMO

 

 

 

 

 

 

 

ON

 

ON

COMPRESSOR

 

ON

OFF

ON

OFF

ON

OFF

ON

 

 

 

 

 

 

2

 

2

 

 

 

 

1

 

1

 

1

 

1

SOLENOID COIL

OFF

ON

 

OFF

 

 

ON

 

(4-WAY VALVE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. . . More than 5 minutes

 

2. . . More than 3 minutes

 

0443_M_S

Fig. 15

Chart Summary and Explanations

For the first 3 minutes after power is applied, the 4–way valve remains OFF and the compressor will not operate, even if the ON button is pushed.

If the 4–way valve is turned OFF with the compressor operating, the air conditioner operates in COOLING mode. See Table below.

If the 4–way valve is turned ON with the compressor operating, the air conditioner operates in HEATING mode. See Table below.

Operation Mode

4-way valve

Compressor

solenoid

 

 

 

 

 

COOLING

OFF

ON

 

 

HEATING

ON

 

 

 

 

SM830076

– 38 –

Page 38
Image 38
Sanyo CH2432, XHS3632, XHS2432, CH3632 service manual 11 4-Way Valve, Solenoid Control, Normal Control Mode

XHS3632, XHS2432, CH3632, CH2432 specifications

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