(Self-diagnostic monitor)

Measured Data

Signal

OUTDOOR MAIN board SW1 Setting

 

–

1

2

3

4

5

6

7

8

9 10

 

LEV1 pulse

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEV 3 pulse

–

 

1

2

3

4

5

6

7

8

9 10

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEV 3a pulse

–

1

2

3

4

5

6

7

8

9 10

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BC controller bypass

SH12

 

1

2

3

4

5

6

7

8

9 10

 

 

 

output superheat

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BC controller

SC16

1

2

3

4

5

6

7

8

9 10

 

intermediate subcool

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BC controller liquid

SC11

 

1

2

3

4

5

6

7

8

9 10

 

subcool

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Solenoid Valve Troubleshooting Flow)

 

 

 

 

 

 

 

 

 

 

Start

Visually check for disconnection between connec- tors and terminals, and confirm correct lead colors.

Intermediate

 

 

 

Controller

connector

 

 

 

board

 

Brown

2

Brown

6

 

Red

5

Red

5

To

Blue

1

Blue

4

LEV

Orange

3

Orange

3

 

Yellow

4

Yellow

2

 

White

6

White

1

No

OK?

Yes

Correction.

Remove connectors from the board and use a tester to check conduction.

•Check between connectors 1-3-5 and 2- 4-6.

No

OK?

Yes

Adjust, repair.

Use a tester to measure resistance between each coil (red-white, red-orange, brown-yellow, brown-blue).

Correct value is: 150Ω± 10%

No

OK?

Yes

Change LEV

Check for the following:

LEV full open: ticking sound

LEV full closed: no sound

No

OK?

Yes

Change LEV

Confirm if LEV is closed fully.

 

No

OK?

 

Yes

Change LEV

 

Attach check LEDs

6

illustrated nearby to board

connectors and confirm

5

that LEDs light for 10

4

seconds.

3

 

 

2

 

1

10kΩ LED

No

OK?

Yes

Change the

 

board.

End

–96–

Page 97 Page 99
Page 98
Image 98
Mitsubishi Electronics P500YMF-C, PURY-P400 Output superheat BC controller, Intermediate subcool BC controller liquid
Page 97 Page 99

PURY-P400, P500YMF-C specifications

Mitsubishi Electronics has long been a leader in the HVAC industry, known for its innovative technology and reliable performance. Among its notable offerings are the P500YMF-C and PURY-P400 models, designed to address the diverse needs of commercial and residential applications.

The Mitsubishi P500YMF-C is a high-performance outdoor unit that showcases energy efficiency and advanced refrigerant technology. It employs a sophisticated inverter-driven compressor, which optimizes energy usage by adjusting its speed based on the specific heating and cooling demands of the environment. This flexibility helps to minimize energy consumption while ensuring optimal comfort.

One of the standout features of the P500YMF-C is its ability to provide consistent heating and cooling even in extreme outdoor temperatures. The unit can operate effectively in low-temperature conditions, making it ideal for regions with harsh winters. Furthermore, the system is designed with a robust build, ensuring durability and longevity.

On the other hand, the PURY-P400 is an indoor multi-split system that complements the outdoor unit perfectly. It's designed for versatility and efficiency, capable of accommodating multiple indoor units connected to a single outdoor unit. This feature is particularly beneficial for larger spaces or buildings where different zones require individual climate control.

The PURY-P400 incorporates Mitsubishi's advanced filtration technology, which significantly improves indoor air quality. It features a multi-layer filtration system that effectively removes dust, allergens, and other particulates from the air, ensuring a healthier environment for occupants.

Both systems utilize R-32 refrigerant, which has a lower global warming potential compared to traditional refrigerants. This not only makes them more eco-friendly but also complies with emerging environmental regulations. The ease of installation and operation of these units is another noteworthy characteristic, with intuitive controls and user-friendly interfaces that facilitate seamless integration into existing systems.

In summary, the Mitsubishi P500YMF-C and PURY-P400 represent a fusion of technology, efficiency, and user-centric design. With a range of features aimed at enhancing performance and environmental sustainability, these models are an excellent choice for anyone looking to invest in a reliable and efficient HVAC system. Whether for residential or commercial use, Mitsubishi’s offerings continue to set the standard in comfort and efficiency.
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