Mitsubishi Electronics service manual Test Point Diagram and Voltage MXZ-32SV E1 , MXZ-32SV E2

Page 34

TEST POINT DIAGRAM AND VOLTAGE MXZ-32SV - E1 , MXZ-32SV - E2

Electronic control P.C.board

Resistance (kΩ )

Discharge temperature thermistor

Gas pipe temperature thermistor

 

Evaporation temperature thermistor

 

Defrost temperature thermistor

 

 

 

 

(kΩ )

 

 

 

 

Temperature(;)

 

Resistance

 

 

 

 

 

 

 

 

 

 

Defrost temperature thermistor

 

 

 

Discharge temperature thermistor

2.5~4.0V DC

 

 

 

 

 

 

 

 

 

0.3~0.6V DC

 

 

 

 

 

 

Evaporation temperature thermistor

 

 

 

Temperature(;)

2.5~4.0V DC

 

Outdoor fan ON 12V DC

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor fan Lo 12V DC

 

 

 

Fin temperature thermistor

R.V. coil

Outdoor fan Me 12V DC

 

 

{

Serial signal Room D 5~10V DC

 

12V DC

 

1.0~4.0V DC

 

 

 

 

{

 

 

 

 

 

Serial signal Room C 5~10V DC

 

 

 

 

 

 

 

 

 

{ Serial signal Room B

 

 

 

 

 

 

5~10V DC

 

 

 

 

 

{

Serial signal Room A

 

 

 

 

 

5~10V DC

 

 

 

 

 

 

Resistance (kΩ )

 

 

 

 

 

{ Relay 12V DC

 

-

 

 

 

 

 

Temperature(;)

 

 

 

 

 

 

12V DC {

 

 

 

 

 

 

+

 

 

 

 

 

 

-

 

 

 

 

 

0~5V DC

-

 

 

 

 

 

-

 

 

 

 

 

 

-

 

 

 

 

 

 

-

 

 

 

 

 

 

-

 

 

 

 

 

 

-

 

 

 

 

 

5V DC {

 

 

 

 

 

 

 

Room D

 

 

 

 

 

LED monitor indication

Room C

 

 

Liner expansion valve(LEV)

 

Room B

{ High pressure switch

 

 

Room A

12V DC pulse wave

 

 

Gas pipe temperature

 

 

 

 

 

 

thermistor 2.5~4.0V DC

 

 

 

 

 

 

34

 

 

 

 

Image 34
Contents Contents MXZ-32SV E1 MXZ-32SV E2Part Names and Functions Technical ChangesOutdoor Unit Indoor / Outdoor Correspondence Table Outdoor UnitIndoor Units Combination MXZ-32SV E1 , MXZ-32SV E209+09+12 15.05 13.80 9.0 07+09 10.35 09+09+12 14.04 12.87 Specification MXZ-32SV E1 , MXZ-32SV E2Heating DB Test conditionsCooling DB35 WB24 0dB =Outlines and Dimensions Unit mmWiring Diagram Models MXZ-32SV- E1Refrigerant System Diagram UnitmmCWB Capacity and the Input CurvesCDB Capacity and input correction by inverter output frequency Outdoor UNITMXZ-32SVOutdoor low pressure and outdoor unit current Heat operationCurrent 10 15 20 10 15 20 Inverter Multi System Control Microprocessor ControlSSR61 LEV control Cool DRY Heat Operational frequency range DRY CoolHeat defrosting control Discharge temperature protection controlHigh or low pressure protection Outdoor fan control Refrigerant recovery control on heatingRelation between main sensor and actuator Before troubleshooting, check the following TroubleshootingInstruction of troubleshooting Lead wiring Housing point Troubleshooting procedureTroubleshooting check table LEVCheck the contact of LEV board connec Trouble criterion of main parts Outdoor unit does not operate. LED display display OFF Outdoor unit does not operate. LED displayWhen heating operation does not work. Start When cooling operation does not work. StartCheck of LEV Check of thermistor Check of HPS Test Point Diagram and Voltage MXZ-32SV E1 , MXZ-32SV E2 Electronic control P.C.boardMXZ-32SV E2 Noise filter P.C.board MXZ-32SV E1Outdoor FAN 220V-240V AC Reversing Valve 220V-240V AC Outdoor FAN 230V AC Reversing Valve 230V ACM P.C.board MXZ-32SV E1 MXZ-32SV E2 Relay P.C.board MXZ-32SV E1 MXZ-32SV E2MXZ-32SV Disassembly InstructionsOutdoor Unit Operating Procedure Photos Removing the compressor PhotoRemoving the 4-way valve Photo Removing the fan motorRemoving the linear expansion valve Photo Operating Procedure Photos Removing the reactorParts List Outdoor Unit Functional Parts MXZ-32SV E1Outdoor Unit Structural Parts MXZ-32SV E117 16 15 MXZ-32SV E2Accessory Parts MXZ-32SV E1 MXZ-32SV E2 Symbol Qty / unit Parts No Parts Name Wiring RemarksDifferent-diameter pipe Outlet guide