Checking code

5201 Pressure sensor abnormality (outdoor unit)

5201

controller)

side

 

High

 

 

pressure

 

(BC

 

5203

Intermedi-

abnormalitysensorPressure

 

ate

 

 

 

 

 

5301

IAC sensor/

 

circuit

 

abnormality

Meaning, detecting method

 

Cause

Checking method & Countermeasure

1 When pressue sensor detects

1)

Pressutre sensor trouble.

See Troubleshooting of pressure

1kg/cm2G (0.098MPa) or less dur-

 

 

sensor.

ing operation, outdoor unit once

 

 

 

stops with 3 minutes restarting

2)

Inner pressure drop due to a leak-

 

mode, and restarts if the detected

 

age.

 

pressure of pressure sensor ex-

3)

Broken cover.

 

ceeds 1kg/cm2G (0.098MPa)

4)

Coming off of pin at connector por-

 

imediately before restarting.

 

tion, poor contact.

 

 

5)

Broken wire.

 

2If the detected pressure of sen- 6) Faulty thermistor input circuit of

sor is less than 1kg/cm2G

 

MAIN board.

 

(0.098MPa) immediately before

 

 

 

restarting, error stop is com-

 

 

 

menced displaying 5201.

 

 

 

3 Under 3 minutes restarting

 

 

 

mode, LED displays intermittent

 

 

 

fault check.

 

 

 

4 During 3 minutes after com-

 

 

 

pressor start, defrosting and 3

 

 

 

minutes after defrosting opera-

 

 

 

tions, trouble detection is ig-

 

 

 

nored.

 

 

 

When high or intermidiate pressure

1)

Pressure sensor trouble.

See troubleshooting of pressure

sensor detects 1kg/cm2G

 

 

sensor.

(0.098MPa) or less immediately be-

 

 

 

fore starting, error stop is com-

2)

Inner pressure drop due to gas leak.

 

menced displaying “5201”, or

3)

Broken cover.

 

“5203”.

4)

Coming off of pin at connector por-

 

 

 

tion, poor contact.

 

 

5)

Broken wire.

 

 

6) Faulty pressure sensor input circuit

 

 

 

of control board.

 

1 If IAC

3 Arms is detected just

1)

Contact is faulty.

Check the contacts of CNACCT on the

before the inverter starts, or

 

 

INV board.

If IAC

3 Arms is detected dur-

 

 

 

ing inverter operation after 5

2)

The current sensor (ACCT) is con-

Check the ACCT_U, W polarity

seconds has passed since the

 

nected with wrong polarity.

with below drawing.

inverter started when the INV

 

 

 

board’s SW1-1 is OFF.

3)

The wiring is defective

Check 1. connections.

[Inverter error detail : 6]

 

 

2. contact at the connectors.

 

 

 

 

3. for broken wires in the follow-

2 If the current sensor (ACCT)

 

 

ing wiring.

miss-wiring is detected during

 

 

CNDR2-CNDR1

inverter operation.

 

 

CN15V2-CN15V1

[Inverter error detail : 13]

 

 

IPM-MC1

 

 

4)

The Ac current sensor (ACCT) is

To judgefailure of ACCT, go to “individual

 

 

 

defective.

Parts Failure Judgment Methods.”

 

 

5)

The IPM is defective.

Check the IPM.

 

 

 

 

Judge that the IPM is fauly, (Go to “In-

 

 

 

 

dividual Parts Failure Judgment Meth-

 

 

 

 

ods.”)

Compressor-input phase U

ACCT_U

U

IPM-output

Compressor-input

phase U

phase W

Red wire

 

 

 

 

ACCT_W

W

IPM-output phase W

Black wire

–116–

Page 117 Page 119
Page 118
Image 118
Mitsubishi Electronics P500YMF-C, PURY-P400 specifications 116, CNDR2-CNDR1, IPM-MC1
Page 117 Page 119

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.
Top Page Image Contents