Mitsubishi Electronics P500YMF-C, PURY-P400 List of Major Component Functions, MC1, MC2

[4] List of Major Component Functions

Name

Code

Product code

Application

Specification

Inspection method

(Function)

Electronic

LEV

1 Adjustment of super heat of heat

DC 12 V

Perform a continuity

expansion

exchanger outlet port of indoor unit

Amount of opening of the

check using a tester.

valve

during cooling.

stepping motor drive valve

Conductivity among

white, red and orange.

2 Adjustment of sub-cool of heat ex-

60 to 2000 pulse.

Conductivity among yel-

changer outlet port of indoor unit

(Gear Type)

low, brown and blue.

during heating.

White

M

Red

Orange

Yellow Brown Blue

unit

Thermistor

TH21

Indoor unit control (Thermostat).

R0 = 15 kΩ

Resistance value

Indoor

(Inlet air

B0/80 = 3460

check

temperature)

Rt =

1

1

15exp{3460(

-

)}

1 Indoor unit control (Freeze preven-

TH22

273+t

273

(Piping

tion, hot adjust, etc.).

0° C:

15 kΩ

temperature)

2 LEV control during heating (sub-cool

10° C: 9.7 kΩ

detection).

20° C: 6.4 kΩ

TH23

LEV control during cooling (super-heat

25° C: 5.3 kΩ

(Gas piping

detection).

30° C: 4.3 kΩ

temperature)

40° C: 3.1 kΩ

Compres-

MC1

Uses the operating pressure to adjust

Low-pressure shell scroll

sor

the operating frequency and adjust the

type. Winding resitance

amount of circulating refrigerant.

0.481 (20° C).

MC2

When there is a load that cannot be

Low-pressure shell scroll type.

adjusted by MC1, this function ensures

Winding resistance: each phase.

the stable flow of refrigerant.

1.996 (20° C): P400 YMF-C

1.197 (20° C): P500 YMF-C

High

63HS

1 Detects high-pressure pressure.

Pressure

0 to 30 kg/cm2G

pressure

2 Performs frequency control and high-

63HS

(0 to 2.94 MPa)

sensor

pressure protection.

Con-

Vout 0.5 to 3.5 V

Connector

nector

GND (Black)

Vout (White)

Vc (DC 5 V) (Red)

Low

63LS

1)

Detects low-pressure.

Pressure

63LS 0 to 10 kg/cm2G

pressure

2)

Calculates the refrigerant circula-

(0 to 0.98 MPa)

tion configuration.

sensor

Vout 0.5 to 3.5 V

3)

Protects the low pressure

Con-

(0.3 V/kg/cm2, V/MPa)

nector

Gnd (black)

Vout (white)

Vc (DC 5 V) (Red)

unit

Pressure

63H1

1 Detects high-pressure.

Set to 30 kg/cm2G

Conductivity check

Outdoor

switch

62H2

2 Performs high-pressure protection.

(2.94 MPa) OFF.

Thermistor

TH11,12

1 Detects high-pressure pressure.

Resistance check

(Outlet)

2 Performs high-pressure protection.

0° C: 698 kΩ

60° C:

48 kΩ

10° C: 413 kΩ

70° C:

34 kΩ

R120 = 7.465 kΩ

20° C: 250 kΩ

80° C:

24 kΩ

B25/120 = 4057

30° C: 160 kΩ

90° C: 17.5 kΩ

Rt =

1

1

40° C: 104 kΩ

100° C: 13.0 kΩ

7.465exp{4057(

-

)}

50° C: 70 kΩ

110° C:

9.8 kΩ

273+t

393

TH2 (Low

1 Detects low pressure saturation tem-

R0 = 33 kΩ

Resistance check

pressure

perature.

B0/100 = 3965

saturation

2 Performs frequency control and liq-

Rt =

1

1

temperature)

uid level of accumulator.

33exp{3965(

-

)}

273+t

273

– 20° C:

92 kΩ

– 10° C:

55 kΩ

0° C:

33 kΩ

10° C:

55 kΩ

20° C:

13 kΩ

30° C: 8.2 kΩ

–56–