Mitsubishi Electronics MUY-D36NA, MUZ-D36NA, U1, MUZ-D30NA, MUY-D30NA Test Point Diagram and Voltage

Page 36

10-6. TEST POINT DIAGRAM AND VOLTAGE

1. Outdoor electronic control P.C. board

MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA

Discharge temperature thermistor (RT62)

Fin temperature thermistor (RT64)

200

 

 

 

 

Defrost thermistor (RT61)

Ambient temperature thermistor (RT65)

Outdoor heat exchanger temperature thermistor (RT68)

100

Resistance (kΩ)

700

600

500

400

300

200

100

032

50

68

86

104

122

140

176

194

122

212

230

248

 

 

 

 

Temperature (°F)

 

 

 

 

 

 

(RT61)

 

 

 

 

 

 

 

Tofan

motor

 

(pulsewave

 

GND

 

 

 

 

 

CN932(20-90VAC

CN931

 

thermistorDefrost

 

 

 

 

 

(

 

 

 

 

 

 

 

 

 

 

 

5 VDC

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

(MUZ) CN661 Discharge temperature thermistor (RT62) CN661

Outdoor heat exchanger temperature thermistor (RT68) CN661

( (

(

CN663

temperatureAmbient(RT65)thermistor CN701 (

 

180

 

 

 

 

 

 

 

 

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ω)

160

 

 

 

 

 

 

 

Ω)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(k

140

 

 

 

 

 

 

 

(k

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Resistance

120

 

 

 

 

 

 

 

Resistance

70

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

50

68

86

104 122 140 158 176

 

 

 

 

 

 

 

 

 

 

 

32

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temperature (°F)

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

transmissionSignal

 

 

(Signalreception(Frompowerboard)5VDCpulsewave

(12VDC CN781

 

0

 

 

 

 

 

 

 

 

 

pulseVDC5 wave

 

(CN79512VDCpulsewave

32

50

68

86

104

 

 

 

 

 

 

 

 

 

 

 

-4

14

(–)((Topowerboard)(+)

 

 

 

 

(powerGNDboard) currentRushrelay(–) coilR.V.(–) (+)

 

 

 

 

Temperature (°F)

 

 

(+)

GND (–) 15 V15

 

(

 

(–)(

 

 

 

 

 

 

 

 

CN702

 

 

 

 

 

LEV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

 

 

(+)

 

 

 

 

 

 

 

 

 

LED 1

LED 2

CN801

294 ~ 370

VDC

Input

F801

FUSE

3.15 A / 250 V

(

CN601

208/230 VAC

60Hz Input

(

for indoor 5~10 VDC

CN681

(High pressure switch

36

Image 36
Contents Outdoor Unit Page Technical Changes Part Names and FunctionsTotal HspfCOP TNB220FMCHTOperating Range ARISeer Outlines and Dimensions Required SpaceWiring Diagram MUY-D30NA MUY-D36NA Refrigerant System Diagram LEVMAX. Refrigerant Piping Length and MAX. Height Difference Data Performance Data Cooling CapacityPerformance Curve Cooling MUZ-D30NA MUZ-D36NA MUY-D30NAMUY-D36NA HeatingCondensing Pressure Cooling 380 420 340 300 26068 100 105F Standard Operation Data MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NAInput correction factors Test RUN Operation How to operate fixed-frequency operation Actuator Control Outdoor FAN Motor ControlR.V. Coil Control MUZ Relation between main sensor and actuatorService Functions Change in Defrost SettingPRE-HEAT Control Troubleshooting Take care of the following during servicingFailure Mode Recall Function Operational procedure Outdoor unit failure mode table LED Troubleshooting Check Table LED1 LED2MUZ BLK WHT WHT RED YLW BRNHow to check inverter/ compressor Troubleshooting FlowCheck of outdoor thermistors Check of R.V. coil MUZ-D30/36 Heating operation does not workCheck of power supply Check of outdoor fan motorCheck of compressor start failure Check of LEVHow to check miswiring and serial signal error Check of HPS Electromagnetic noise enters into TV sets or radios Test Point Diagram and Voltage Outdoor electronic control P.C. boardNoise filter P.C. board Outdoor power board CN2CN3 CN5Disassembly Instructions Removing the cabinet PhotoPhoto 5 Inverter assembly Removing R.V. coil MUZHPS Temperature thermistor and ambient temperature ThermistorRemoving outdoor fan motor MUZRemoving the compressor and 4-way valve Photo Removing the reactorPage Specifications subject to change without notice

MUY-D36NA, MUZ-D30NA, U1, MUY-D30NA, MUZ-D36NA specifications

Mitsubishi Electronics has long been at the forefront of innovation in heating and cooling solutions, and its latest lineup of multi-zone air conditioning units—MUZ-D36NA, MUY-D30NA, U1, MUZ-D30NA, and MUY-D36NA—reflects this commitment to quality and efficiency. Designed for both residential and commercial applications, these units offer advanced features that enhance comfort and energy savings.

One of the standout characteristics of these models is their energy efficiency. Each unit is equipped with high SEER (Seasonal Energy Efficiency Ratio) ratings, making them ideal for users looking to reduce energy consumption while maintaining optimal indoor climates. The efficiency is complemented by inverter technology, which allows the compressor to adjust its speed based on the cooling demand. This results in a smoother operation, reduced noise levels, and significant energy savings over time.

These units also feature advanced filtration systems that improve indoor air quality. The included high-performance air filters capture dust, allergens, and other particles, ensuring that occupants breathe cleaner air. Additionally, some models are equipped with a plasma filtration system that actively neutralizes odors and airborne contaminants, making them particularly suitable for allergy sufferers.

Mitsubishi's advanced climate control technologies set these models apart. The system can be easily controlled using a user-friendly remote or via a mobile app, offering convenience and flexibility. The intelligent temperature control ensures that rooms are heated or cooled consistently, regardless of external conditions.

Installation versatility is another highlight. These units can be configured for multi-zone systems, allowing for tailored comfort in different spaces. The compact and sleek design makes them suitable for various installations, whether in homes, offices, or retail environments.

Furthermore, the MUZ-D and MUY-D series are equipped with quiet operation features, ensuring minimal disruption in both residential and commercial settings. This is particularly beneficial in spaces where noise could be a concern, such as bedrooms or conference rooms.

In summary, Mitsubishi's MUZ-D36NA, MUY-D30NA, U1, MUZ-D30NA, and MUY-D36NA offer a powerful combination of energy efficiency, advanced filtration, intelligent controls, and quiet operation. These features make them an excellent choice for anyone looking to enhance indoor comfort while minimizing environmental impact. Whether it's for a single room or an entire building, these units are engineered to deliver reliable performance year-round.