21
REFRIGERANT SYSTEM DIAGRAM
8
PMH-P1.6BA / PUH-P1.6VGA, PUH-P1.6YGA
PMH-P2BA / PUH-P2VGA, PUH-P2YGA
Indoor unit
Refrigerant pipe
15.88
mm
(
[
5/8"):PMH-P1.6/2BA
(with heat insulator)
Flexible tube
Ball valve
Strainer
4-way valve
Muffler
Service
port
Service
port
High pressure
switch
Outdoor unit
Strainer
Strainer
Compressor
Accumulator
Drier
Ball valve
(with service port)
Refrigerant pipe
9.52
mm
(
[
3/8"):PMH-P1.6/2BA
(with heat insulator)
Distributor
with
strainer
Distributor
with
strainer
Thermistor
(TH1)
Thermistor
(TH5)
Thermistor
(TH4)
Thermistor
(TH6)
Thermistor
(TH3)
Thermistor
(TH2)
Strainer
Flared
connection
<4-way valve solenoid coil>
Heating ON
Cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Linear expansion valve
Unit : mm
9
TROUBLE SHOOTING
How to check the parts PMH-P1.6BA, PMH-P2BA
Parts name
Check points
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10
:
~30
:
)
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20
:
~30
:
)
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20
:
)
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20
:
~30
:
)
Vane motor
Drain-up
mechanism
Drain sensor
(Refer to the thermistor)
(Refer to the thermistor)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor (TH2)
Condenser/evaporator
temperature thermistor
(TH5)
1
2
Blue
Blue
1
2
3
Normal
4.3k
"
~9.6k
"
Abnormal
Open or short
Abnormal
Open or short
Normal
0.6k
"
~6.0k
"
Normal
Connector
Abnormal
380
"
i
7%
Open or short
Normal
Abnormal
400
"
~480
"
Open or short
MV
Orange
Red
Brown
Brown — Yellow
Brown — Red
Brown — Orange
Brown — Green
Green
Yellow
3
1
5
4
2
