Functions Of Principal Parts - Mitsubishi Electric PUHY-P200 Service Handbook

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Functions of Principal Parts

1. Outdoor Unit
Symbol
Name
(function)
Compres- MC1
sor MC2
High
63HS
-pressure
sensor
Low
63LS
-pressure
sensor
Pressure
63H1 63H2 on P450
switch
63H2 -P650 types only
Thermistor TH11, 12 TH12 on
(Discharge) P450-P650
types only
TH5
(Piping temp-
erature)
TH6
(Outdoor air
temperature)
TH7
TH8
THHS
Heat sink
Inverter
heat sink
temperature
Notes Function
Adjusts the volume of circulating re-
frigerant by controlling the operating
frequency with the operating pres-
sure.
1 Detects high pressure
2 Regulates frequency and protects
high pressure.
1 Detects low-pressure
2 Protects low-pressure
1 Detects high pressure
2 Protects high pressure
1 Detects discharge temperature
2 Protects high pressure
0˚C : 698kΩ
10˚C : 413kΩ
20˚C : 250kΩ
30˚C : 160kΩ
40˚C : 104kΩ 100˚C : 13.0kΩ
50˚C : 70kΩ 110˚C :
1 Controls frequency
2 Controls defrost during heating
operation
3 Controls LEV1 by detecting sub
cool at the heat exchanger outlet,
using HPS data and TH5 reading.
1 Detects outdoor temperature
2 Controls fan operation
Controls LEV1, using TH5, TH7, and
TH8
Controls inverter cooling fan, using
THHS temperature.
- 62 -
Specification
(P200-type)
High-pressure shell scroll type
Winding resistance
(P250-P400 types)
Low-pressure shell scroll type
Winding resistance
63HS
1 2 3
Con-
nector
63LS
1 2 3
Con-
nector
4.15MPa Set to OFF
R =7.465kΩ
120
R =4057
25/120
60˚C : 48kΩ
Rt =
70˚C : 34kΩ
7.465exp{4057(
80˚C : 24kΩ
90˚C : 17.5kΩ
9.8kΩ
R =15kΩ
0
R =3460
0/80
Rt =
15exp{3460(
0˚C : 15kΩ
10˚C : 9.7kΩ
20˚C : 6.4kΩ
R =17kΩ
0
R =4170
25/120
Rt =
17exp{4170(
0˚C : 181kΩ 25˚C : 50kΩ
10˚C : 105kΩ 30˚C : 40kΩ
20˚C : 64kΩ 40˚C : 26kΩ
Check method
20˚C : 0.72Ω
20˚C : 0.583Ω
Pressure
0~4.15MPa
Vout 0.5~3.5V
0.071V/0.098MPa
Pressure [MPa]
=1.38✕Vout[V]-0.69
Gnd (Black)
1
2
Vout (White)
3
Vcc (DC5V) (red)
Pressure
0~1.7MPa
Vout 0.5~3.5V
0.173V/0.098MPa
Pressure [MPa]
=0.566✕Vout[V]-0.283
Gnd (Black)
1
2
Vout (White)
3
Vcc (DC5V) (red)
Resistance value
check
1 1
- )}
273+t 393
Resistance value
check
1 1
- )}
273+t 273
25˚C : 5.3kΩ
30˚C : 4.3kΩ
40˚C : 3.1kΩ
1 1
- )}
273+t 323