Samsung MH026FNCA service manual Checking Outdoor Controller, LED1 Red Always on, LED3 Yellow OFF

Page 84

Troubleshooting

9-3-2 Checking Outdoor Controller

1.Making sure the wire connections.

2.Checking AC line

1)Checking FUSE

2)Checking resistance between 'L wire (SKY BLU)' and 'BD01 Neutral' normal value : 190 - 210Ω

If value is then check R001.

 

 

Live

 

 

Neutral

 

3)Checking resistance between 'N wire (BRN)' and 'BD01 Live side' normal value : 0 - 0.1Ω

3.Checking ON/OFF pattern of LED1(Red), LED2(Green), LED3(Yellow)

Apply the power then ALL LEDs are on for about 1 second. then changed to as follow.

LED1 (Red) : ALWAYS ON

LED2 (Green) : Blinking 4 times a second

(This means communication between 2 micoms IC01 and IC50 is normal)

LED3 (Yellow) : OFF

In case of another pattern inverter micom detects some hardware trouble or abnormal condition.

Yellow

Green

 

Red

Description

Note

 

 

 

 

 

 

Status indication

 

 

 

 

 

 

 

 

 

OFF

OFF

 

OFF

Power OFF / No power (SMPS error)

 

 

 

 

 

 

 

ON

ON

 

ON

Power on reset ( 1~2 seconds )

If always in this pattern IC01(inverter micom)

 

has some trouble.

 

 

 

 

 

 

 

 

 

 

 

OFF

Blink

 

ON

Normal operation

 

 

 

 

 

 

 

Hardware trouble

 

 

 

 

 

 

 

 

 

OFF

OFF

 

ON

Communication Error between

 

 

Main micom and inverter micom

 

 

 

 

 

 

 

 

 

 

 

 

Blink

Blink

 

ON

Current sensor error

 

 

 

 

 

 

 

ON

Blink

 

Blink

DC-LINK sensor error

 

 

 

 

 

 

 

ON

ON

 

Blink

AC-Line zero crossing error

After power off this error will display until

 

DC LINK capacitor discharged.(Max 20sec.)

 

 

 

 

 

 

 

 

 

 

 

 

ON

OFF

 

Blink

Option error (EEPROM error)

 

 

 

 

 

 

 

Abnormal condition

 

 

 

 

 

 

 

 

 

OFF

OFF

 

Blink

Comp. peak current (Over Current)

 

 

 

 

 

 

 

OFF

Blink

 

OFF

Comp. starting error

 

 

 

 

 

 

 

ON

OFF

 

ON

Comp. rotation error

 

 

 

 

 

 

 

OFF

ON

 

Blink

DC-Link voltage error

 

 

 

 

 

 

 

Blink

ON

 

OFF

Comp. V Limit Error

 

 

 

 

 

 

 

Samsung Electronics

9-14

Image 84
Contents Free Joint Multi AIR Conditioner Contents 10-1 Precautions Disposing of the unit OthersProduct Specifications Feature of ProductProduct Specifications ModelMH026FNCA Product Specificationscont MH026FECA MH035FECA MH052FECA Qfgn &#$ %##+VGO 176&11470+6Accessory and Option Specifications Indoor Unit AccessoriesQFG0Q Descriptions Code-No RemarkIndoor Unit Accessoriescont DescriptionsCable-tie UnitOutdoor Unit Accessories TCKP2NWI1WV$# Transmitter Unit Accessories Cable-tie DB65-10088B&J@KKN2JEP Guetkrvkqp124#6+10 +/4 674$1 Indicators Abnormal conditions Operating Blue RedBreakaway of Cond MID sensor Display RemarkOutdoor Unitcont Setting Option Setup Method Enter the Option Setup modeFeature Feature Display Error Mode Pressing the ON/OFF buttonUnit operation test-run Technical Bulletin Table of the option code  5VCPFCTF  Disassembly and Reassembly Necessary ToolsProcedure Remark Indoor UnitUnlock 3 hooks to fix Panel Front Tray Drain Back-Body Parts Procedure Remark 2 MH026FECA/MH035FECA Parts Procedure Drain Pan Parts Procedure Disassemble if after disassembling the Cabinet Top Motor Parts Procedure 3 MH052FECA Parts Procedure Detach the Motor Wire Connected to PCB and Capacitor Parts Procedure Samsung Electronics Detach the Evaporator from the set Control Samsung Electronics Outdoor Unit 1 MH050FXCA2ASamsung Electronics Detach the Compressor 2 MH080FXCA4A Parts Procedure Remark Use Monkey Spanner TLHK@A@3EASO=J@-=NPOEOP 2CTVU.KUV 2 MH052FNCA Samsung Electronics0Q QFG0Q Guetkrvkqp 5RGEKHKECVKQP#50# 3 MH026FECA/MH035FECA Parts List 50#4 MH052FECA #55 %#$+$#5 #55 5%%/6         %##    13-1 #$ Wiring Diagram @KKN2JEPĠ?KJP # aMH050FXCA2A MH080FXCA4A Schematic Diagram Mhfeca PCB Diagram Main PCBIndoor Unit02- Ġ&J@KKN2JEP Ġ?KJP Mhfnca@ 4 # $% ‘ + = Q *&+ Ġ,QP@KKN2JEP #5 *%#5 Troubleshooting Checking and Testing operations Reset buttonPipe Checking Operation Auto Addressing Mode Button K1 timesMode Function Move dip switch n1 of SW02 Type Picture ModelInstallation Test Mode with all indoor units functioning Connected 0=A1=B2=C3=DContents Auto address setting Operation case Try-run Check Error Fault Diagnosis by Symptom Basic Check FlowBasic Check Flowcont Checking Outdoor Controller LED1 Red Always onLED3 Yellow OFF Hardware troubleMeasuring point Normal value Index Value RemarkChecking Temperature sensor  DA?GEJC3 -ELAI=P?DEJCProcedure PCB InspectionSelecting Area for Installation Indoor UnitRemote Control Unit Outdoor Unit#FFKPITGHTKIGTCPV Connecting Up and Purging the Circuit MH050FXCA2AMH080FXCA4A Refrigerant Refill 10-3-1 MH050FXCA2A10-3-2 MH080FXCA4A 5#5CA*%8#5C4A Ncuu #VKPUVCNNCVKQP #VUGTXKEGFlare Nut Fixing Torque Outer diameter Torquekg..cm Fixing Torque Final TorquePump down Procedure 10-6-1 MH050FXCA2ARelocation of the air conditioner 10-6-2 MH080FXCA4A Index for Model Name 052 O O O07 / O O O Refrigerating Cycle Diagram Samsung Electronics 11-4 Power/Heat Pressure & Capacity markCal/s Kcal/h Btu/h Kg . m/s Ib . m/s 544.411-5 Q & a for Non-trouble For Non-trouble Class Description Remote controller wont operate Is it possible to install the outdoor unit outside?Cleanness Common sense of refrigerationAir supplier AirElectronics

MH026FNCA specifications

The Samsung MH026FNCA is an innovative solution designed to meet the diverse needs of residential and commercial spaces. As a part of Samsung's advanced lineup of air conditioning systems, this model exemplifies the brand's commitment to quality, efficiency, and cutting-edge technology. With an array of features, the MH026FNCA stands out as an ideal choice for users seeking reliable climate control in their environments.

One of the standout characteristics of the Samsung MH026FNCA is its energy efficiency. Equipped with a powerful inverter technology, it adjusts the compressor speed to maintain the desired temperature with minimal energy consumption. This not only helps in reducing electricity bills but also contributes to a more sustainable lifestyle, making it an eco-friendly choice for consumers.

The MH026FNCA also incorporates a multi-stage filtration system, which significantly improves indoor air quality. This system includes a washable pre-filter and a high-performance HEPA filter that captures dust, allergens, and other microscopic particles, ensuring that the air circulated in the room is fresh and clean. This feature is particularly beneficial for those who suffer from allergies or respiratory issues.

In terms of usability, the Samsung MH026FNCA is designed with convenience in mind. It comes with a user-friendly remote control that allows users to adjust settings effortlessly from a distance. Additionally, its smart technology enables compatibility with various smart home systems, offering the ability to control the unit via smartphone apps or voice commands for seamless integration into modern living spaces.

The robust build quality of the MH026FNCA enhances its reliability, ensuring long-lasting performance even in demanding conditions. With a sleek design and compact size, it can easily blend into different interior decors while providing quick and effective cooling or heating, depending on the season.

Furthermore, the MH026FNCA features advanced noise reduction technologies, making it one of the quietest models in its class. Users can enjoy a peaceful environment without the distraction of loud operational sounds, making it ideal for bedrooms, offices, and public spaces where tranquility is essential.

Overall, the Samsung MH026FNCA is a testament to innovation in air conditioning technology, combining energy efficiency, advanced filtration, smart features, and aesthetic appeal. For those in search of an effective climate control solution, this model sets a high standard that meets various consumer requirements without compromising on performance or comfort.