ST
CV
SV1
SV2
SV3
SV4
SV5
SV6
ST
CP1
CP2
CP3
Close
Close
Open
Open
Open
Open
High Pressure Pipe
Low Pressure Pipe
Indoor unit Gas Pipe
ST
CV
SV1
SV2
SV3
SV4
SV5
SV6
ST
CP1
CP2
CP3
Close
Close
Open
High Pressure Pipe
Low Pressure Pipe
Indoor unit Gas Pipe
When SV4, SV5 SV6 internal blockage or Close position, the refrigerant flow will be lessened,
Indoor unit Gas pipe Temp. > Low pressure pipe temp
ST
CV
SV1
SV2
SV3
SV4
SV5
SV6
ST
CP1
CP2
CP3
Open
Close
Open
Close
Close
Close
High Pressure Pipe
Low Pressure Pipe
Indoor unit Gas Pipe
ST
CV
SV1
SV2
SV3
SV4
SV5
SV6
ST
CP1
CP2
CP3
Close
Close
Close
Close
Close
High Pressure Pipe
Low Pressure Pipe
Indoor unit Gas Pipe
Pipe Temp.
COLD
COLD
Low Pressure Pipe
Indoor unit Gas Pipe
Pipe Temp.
COLD
Less COLD
Low Pressure Pipe
Indoor unit Gas Pipe
Pipe Temp.
HOT
HOT
High Pressure Pipe Indoor unit Gas Pipe
Pipe Temp.
HOT
Less HOT
High Pressure Pipe
Indoor unit Gas Pipe
Pipe temperature in Cooling mode
Normal Operation
Possible Cause
Pipe temperature in Heating mode
Normal Operation
Possible Cause
When SV1, blockage or Close position, the refrigerant flow will be lessened,
Indoor unit Gas pipe Temp. < Hi pressure pipe temp
Position of Solenoid coil
SV4
SV4
SV4
SV5
SV1
SV6
SV3
SV2
SV5
SV1
SV3
SV2
SV1
SV3
SV2
UTP-RX01AH
UTP-RX01BH / UTP-RX04BH
UTP-RX01BH
Discharge Valve
Suction Valve
Equalization Valve (Pressurization)
Equalization Valve (Decompression)
Cooling / Dry mode
Heating mode
SV1 ( SVD1 )
SV4 - 6 ( SVS )
SV2 ( SVB2 )
SV3 ( SVB1 )
Fan mode / Stop
Close
Open
Close
Open
Open
Close
Open
Close
Close
Close
Close
Open
Function
( Indication on Service Tool )
SV No.
Solenoid valve Controlling
SV1
SV2
SV3
SV4
SV5
SV6
Green
Blue
Black
White
Red
Yellow
Color of Connector
- Check functioning of Solenoid Valve
* Valve or Pipe Blockage , Opposite operation of Valves can be the cause of Noise problem.
- Check Solenoid coil position / connection
- Chedk pipe temperautre difference during operation
SERVICE INFORMATION
RB Unit Abnormal (No Cooling, No Heating, Abnormal Noise)
Solenoid Coil resistance
<Refer to the Parts information 26>
04-90
CAUTION: The solenoid coil which has a heat sink is hot.
When you approach the solenoid coil, turn off the power supply for the RB unit and wait until the temperature of coil becomes low.
Summary of Contents for Airstage UTP-RU01AH
Page 1: ...SERVICE MANUAL 208 230V 60Hz ...
Page 5: ...1 TEST RUN ...
Page 6: ......
Page 34: ...2 OUTDOOR UNIT OPERATION CONTROL ...
Page 59: ...3 INDOOR UNIT OPERATION ...
Page 60: ......
Page 82: ......
Page 83: ...4 TROUBLE SHOOTING ...
Page 84: ......
Page 186: ...04 96 0 24 AOUA120 208 230 AOUA72 90 0 19 RED WHITE BLACK U V W ...
Page 208: ...5 APPENDING DATA UNIT ...
Page 209: ......
Page 215: ...CASSETTE TYPE MODELS AUUB18TLAV AUUB24TLAV AUUB30TLAV AUUB36TLAV 05 06 ...
Page 217: ...MEDIUM STATIC PRESSURE DUCT TYPE MODEL ARUM24TLAV 05 08 MODEL ARUM30TLAV ARUM36TLAV ...
Page 218: ...HIGH STATIC PRESSURE DUCT TYPE MODELS ARUH36TLAV ARUH48TLAV ARUH60TLAV 05 09 ...
Page 219: ...FLOOR CEILING TYPE MODELS ABUA12TLAV ABUA14TLAV ABUA18TLAV ABUA24TLAV 05 10 ...
Page 220: ...CEILING TYPE MODELS ABUA30TLAV ABUA36TLAV INDOOR UNITS INDOOR UNITS 05 11 ...
Page 221: ...WALL MOUNTED TYPE MODELS ASUA7TLAV ASUA9TLAV ASUA12TLAV ASUA14TLAV 05 12 ...
Page 222: ...MODELS ASUB18TLAV ASUB24TLAV 05 13 ...
Page 224: ...MODEL UTP RU01AH MODEL UTP RU01BH 5 2 3 RB Unit 05 15 ...
Page 225: ...MODEL UTP RU01CH 05 16 ...
Page 226: ...MODEL UTP RU04BH 05 17 ...
Page 227: ...MODELS AAUA48TLAV 5 2 4 Outdoor Air Unit 05 18 MODELS AAUA72TLAV ...
Page 228: ...MODELS AAUA96TLAV 05 19 ...
Page 230: ...6 DISASSEMBLY PROCESS ...
Page 245: ......