Checking code

Meaning, detecting method

 

 

Cause

Checking method & Countermeasure

 

 

 

 

 

 

1302

High pressure

When press. sensor detects 1kg/

1)

Fall in internal press. caused by

See Trouble check of pressure sen-

 

abnoramlity 2

cm2G (0.098MPa) or less just be-

 

 

gas leak.

 

 

 

 

sor.

 

 

 

(Outdoor unit)

fore starting of operation, erro stop

2)

Press. sensor trouble.

 

 

 

 

 

 

is observed with code No. “1302”

3)

Film breakage.

 

 

 

 

 

 

 

 

 

 

displayed.

4)

Coming off of pin in connector por-

 

 

 

 

 

 

 

 

 

tion, poor contact.

 

 

 

 

 

 

 

5)

Broken wire.

 

 

 

 

 

 

 

 

 

 

 

6)

Press. sensor input circuit trouble

 

 

 

 

 

 

 

 

 

on control circuit board.

 

 

 

 

 

 

 

 

 

 

1368

 

Liquid

When liquid side press, sensor, gas

1)

Poor operations of indoor LEV.

Check operations status by actually

 

 

side

side pressure sensor, or interme-

2)

Poor operations of BC controller

performing cooling or heating opera-

 

 

 

diate pressure sensor detects

 

 

LEV:

 

 

 

 

tions.

 

 

 

 

 

30kg/cm2G (2.94MPa) or more, er-

 

 

Heating-only, heating-principal:

Cooling

:

Indoor LEV

 

 

 

ror stop is observed with code No.

 

 

 

LEV3

 

 

LEV1, 3

 

 

 

“1368”, or “1370” displayed.

 

 

Defrost:

LEV3

 

 

SVM

 

 

 

 

3)

Poor operations of BC controller

 

 

SVA SV3~8

 

 

 

 

 

 

SVM:

 

 

 

 

Heating

:

Indoor LEV

 

 

 

 

 

 

Cooling-only, defrost

 

 

LEV3

 

 

 

 

4)

Poor operations of BC controller

 

 

SVB

 

 

 

 

 

 

SVA:

 

 

 

 

See Trouble check of LEV and sole-

 

 

 

 

 

 

Cooling-only, cooling-principal

 

 

 

 

5)

Poor operations of BC controller

noid valve.

 

 

 

 

 

 

 

 

SVB:

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating-only, heating-principal

 

 

 

 

 

 

 

6)

Solenoid valve SV (3 ~ 8) trouble.

 

 

 

 

 

 

 

 

 

Cooling-only, cooling-principal

 

 

 

 

 

 

 

7)

Setting error of connection address.

Check address setting of indoor unit

 

 

 

 

 

 

 

 

 

 

 

connector.

 

 

 

 

 

 

8)

Poor operations of ball valve.

Confirm that ball valve is fully opened.

 

controller)

 

 

9)

Short cycle of indoor unit.

Check indoor unit and take measures

 

 

 

12)Dust on indoor unit heat exchanger.

to trouble.

 

 

 

 

 

 

10)Clogging of indoor unit filter.

 

 

 

 

 

 

11)Fall in air volume caused by dust

 

 

 

 

 

 

 

 

 

on indoor unit fan.

 

 

 

 

(BC

 

 

13)Indoor unit fan block, motor trouble.

 

 

 

 

 

 

 

 

9)~13) : Rise in high pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

abnoramlity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

caused by lowered condensing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

capacity in heating-only and

 

 

 

 

 

 

 

 

 

 

 

heating-principal operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure

 

 

14)Short cycle of outdoor unit.

Check outdoor unit and take measures

 

 

 

15)Dust on outdoor unit heat ex-

to trouble.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

changer.

 

 

 

 

 

 

 

 

 

 

 

 

 

1370

High

Intermedi-

 

16) Outdoor unit fan block, motor trou-

Check outdoor unit fan.

 

ate side

 

 

 

ble, poor operations of fan control-

See Trouble check of outdoor unit

 

 

 

 

 

 

 

 

 

 

 

ler.

 

 

 

 

fan.

 

 

 

 

 

 

 

 

14)~16) : Rise in high press.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

caused by lowered condensing

 

 

 

 

 

 

 

 

 

 

 

capacity in cooling-only and

 

 

 

 

 

 

 

 

 

 

 

cooling-principal operation.

 

 

See Trouble check of solenoid

 

 

 

 

17)Poor operations of solenoid valves

 

 

 

 

 

 

SV1, 4a.

 

 

 

 

valve.

 

 

 

 

 

 

 

 

(Bypass valves (SV1, 4a) can not

 

 

 

 

 

 

 

 

 

control rise in high pressure.)

 

 

 

 

 

 

 

18)Thermistor trouble (TH2, TH5, TH6).

Check resistance of thermistor.

 

 

 

 

19)Pressure sensor trouble.

Check Trouble check of pressure

 

 

 

 

 

 

 

 

 

 

 

sensor.

 

 

 

 

 

 

20)Control circuit board thermistor

Check inlet temperature and press. of

 

 

 

 

 

 

trouble, press. sensor input circuit

sensor with LED monitor.

 

 

 

 

 

 

trouble.

 

 

 

 

 

 

 

 

 

 

 

21)Poor mounting of thermistor.

 

 

 

 

 

 

 

 

 

(TH2, TH5, H6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–108–

Page 109 Page 111
Page 110
Image 110
Mitsubishi Electronics P500YMF-C, PURY-P400 specifications 108, LEV3 SVM, SVA SV3~8
Page 109 Page 111

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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