Mitsubishi Electric CRHV-P600YA-HPB Service Handbook page 72

[ VI Refrigerant Circuit ]
Part Symbols
name (functions)
Thermi TH2,6
stor (suction)
TH3,7
(Compressor
shell tempera-
ture)
TH4,8
(Heat source
HEX wall tem-
perature)
TH11-14
17,18,20
THHS
Inverter
heat sink tem-
perature
Sole- SV1
noid INJ control
valve
Heater CH
Fan FAN motor
motor
Linear LEV2
expan- (INJ control)
sion
valve
LEV1
(Refrigerant
flow adjust-
ment)
HWE1312A
Notes Usage
1) Detects suction tempera-
ture
2) Provide low pressure pro-
tection
1) Detects compressor shell
temperature
2) Provides protection for
the compressor
1) Detects heat source HEX
wall temperature
2) Provides protection for
the heat-source heat ex-
changer
1) Detects water tempera-
ture
2) Controls water tempera-
ture
Controls inverter cooling fan
based on THHS temperature
Turns on/off the injection
Heats the refrigerant in the
compressor
Cools the heatsink and ex-
hausts air from the unit
Adjusts the amount of bypass
flow from the liquid pipe on the
outdoor unit during heating
Adjusts refrigerant flow during
heating
Specifications
Degrees Celsius
R = 15k
0
R = 3385
0/80
exp
R = 15
3385
t
0°C[32°F] :15kohm
10°C[50°F] :9.7kohm
20°C[68°F] :6.5kohm
25°C[77°F] :5.3kohm
30°C[86°F] :4.4kohm
40°C[104°F] :3.0kohm
Degrees Celsius
R = 17k
50
R = 4016
25/120
R = 17 exp
4016
t
0°C[32°F] :161kohm
10°C[50°F] :97kohm
20°C[68°F] :60kohm
25°C[77°F] :48kohm
30°C[86°F] :39kohm
40°C[104°F] :25kohm
AC220 - 240V
Open while being powered/
closed while not being pow-
ered
Cord heater 240V 35W
AC230V
DC12V
Opening of a valve driven
by a stepping motor 0-480
pulses (direct driven type)
DC12V
Opening of a valve driven
by a stepping motor 1400
pulses
- 65 -
Check method
Resistance check
1 1
273
1 1
323
Continuity check with a
tester
Resistance check
Refer to the section
"Continuity Test with a
Tester".
Continuity between
white, brown, and or-
ange.
Continuity between yel-
low, red, and blue.
Refer to the section
"Continuity Test with a
Tester".
Continuity between
white, red, and orange.
Continuity between yel-
low, brown, and blue.
White
Red
Orange
Yellow Brown Blue
M
GB