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Samsung
MH026FNCA service manual 6-2Outdoor Unit, MH050FXCA2A
Models:
MH026FNCA
1
63
108
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108 pages
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Troubleshooting
Specification
Install
Parts list
Wiring Diagram
9-4-1Cautions for Part Replacement
1Detach all the wires connected to the PCB
9-3Fault Diagnosis by Symptom
Reset button
3-2Setting Option Setup Method
Page 63
Image 63
6-2
Outdoor Unit
■
MH050FXCA2A
This Document can not be used without Samsung's authorization.
6-3
Samsung Electronics
Page 62
Page 64
Page 63
Image 63
Page 62
Page 64
Contents
FREE JOINT MULTI AIR CONDITIONER
INDOOR UNIT
THE FEATURE OF PRODUCT
Convenient Installation
Contents
9-12
10-1
11-1
Contents
1-3During operation
1. Precautions
1-1Installing the air conditioner
1-2Power supply and circuit breaker
1-4Disposing of the unit
1-5Others
Samsung Electronics
Inverter for High Efficiency Operation
2. Product Specifications
2-1The Feature of Product
Convenient Installation
Item
2-2Product Specifications
Model
MH026FNCA
Samsung Electronics
Product Specificationscont
MH035FECA
Product Specificationscont
Model
MH026FECA
:&#$
Product Specificationscont
Samsung Electronics
QFGN
+VGO
2-3Accessory and Option Specifications
2-3-1Indoor Unit Accessories
MHFNCA
Descriptions
Indoor Unit Accessoriescont
MHFECA
Item
Descriptions
Indoor Unit Accessoriescont
MHFECAcont
Item
&GUETKRVKQPU
2-3-2Outdoor Unit Accessories
MH050FXCA2A/MH080FXCA4A
+VGO
Item
2-3-3Transmitter Unit Accessories
+PFKECVQTU
HECJIAJP=J@@FQOPIAJPO
NNKNIK@A=J@?DA?GIAPDK@
&J@KKN2JEP
Samsung Electronics
MHFECA
MHFECAcont
Alignment and Adjustments
Samsung Electronics
3-1-2Outdoor Unit
Outdoor Unitcont
3-2Setting Option Setup Method
Step 1 : Enter the Option Setup mode
ex Option No
Alignment and Adjustments
Step 5 : Unit operation test-run
• Error Mode
Samsung Electronics
Step 4 : Pressing the ON/OFF button
TECHNICAL BULLETIN
Option Code Procedure for MH Neo Forte
Table of the option code
MODEL
OPTION CODE
Remark
4. Disassembly and Reassembly
Necessary Tools
Item
Remark
4-1Indoor Unit
4-1-1MH026FNCA/MH035FNCA/MH052FNCA
Procedure
Procedure
Samsung Electronics
Remark
Procedure
Parts
Remark
Parts
4-1-2MH026FECA/MH035FECA
Procedure
Remark
6Disassemble the band Motor for fixing the Motor
Procedure
Parts
Unscrew a screw
1 Disassemble the Cabinet Top Evap
Procedure
Samsung Electronics
Remark
Procedure
Parts
1-3and the Drain Pan 2-1, 2-2,
Procedure
Samsung Electronics
Parts
Disassemble if after disassembling the case PCB
Procedure
Disassembly and Reassembly
Parts
4-11
4-1-3MH052FECA
Procedure
Samsung Electronics
Procedure
Parts
Blower & Motor
Parts
Procedure
Samsung Electronics
4-13
Drain Pan
Procedure
Disassembly and Reassembly
Parts
Parts
Procedure
Samsung Electronics
4-15
Remark
Procedure
1Detach all the wires connected to the PCB
Parts
Parts
Procedure
Samsung Electronics
4-17
Remark
4-2Outdoor Unit
4-2-1MH050FXCA2A
Procedure
Parts
Procedure
Samsung Electronics
4-19
Procedure
Remark
Release the refrigerant at first
4-21
4-2-2MH080FXCA4A
Procedure
Samsung Electronics
Remark
Procedure
Disassembly and Reassembly
Parts
Samsung Electronics
4-23
Remark
TLHK@A@3EASO=J@-=NPOEOP
&J@KKN2JEP
*%#+ *%#+
&GUETKRVKQP
2CTVU.KUV
5COUWPINGEVTQPKEU
%QFG0Q
5-1-2MH052FNCA
6 7
Samsung Electronics
5COUWPINGEVTQPKEU
2CTVU.KUV
19 21
5-1-3MH026FECA/MH035FECA
Exploded Views and Parts List
2 17 18 16
Samsung Electronics
Parts List
10 9 6
5-1-4MH052FECA
Exploded Views and Parts List
2 2 8 2
Samsung Electronics
Parts List
8
5-2Outdoor Unit
5-2-1MH050FXCA2A
11 12 3 1
2CTVU.KUV
Samsung Electronics
5-10
5-2-2MH080FXCA4A
56 10 20 4 13 15 2
1 14
Parts List
Samsung Electronics
5-12
6. Wiring Diagram
6-1Indoor Unit
MHFNCA
%# A
&J@KKN2JEPĠ?KJP
MH050FXCA2A
6-2Outdoor Unit
Samsung Electronics
MH080FXCA4A
7. Schematic Diagram
7-1Indoor Unit
MHFNCA
Samsung Electronics
MHFECA
8. PCB Diagram
8-1MAIN PCBIndoor Unit
MHFNCA
02- Ġ&J@KKN2JEP Ġ?KJP
MHFNCA
Samsung Electronics
5 6 7 8 9 0
MHFECA
2QYGT
*&+ - Ġ,QP@KKN2JEP
%#5 *%#5
2QYGT0
9-1Items to be checked first
9. Troubleshooting
Samsung Electronics
9-2Checking and Testing operations
2. Settings of PCB Display of the Outdoor unit
Reset button
2.2.Apply the power to the outdoor unit
Samsung Electronics
In case of MANUAL ADDRESSING mode
Switch Setting and Testing Operation
TYPE
Switch Setting and Testing Operation cont
SWITCH “SW02 ”
Samsung Electronics
Heat mode try-run :Pushthe K2 button once
Switch Setting and Testing Operation cont
Please do cool mode try-runor heat mode try run
Cool mode try-run :Pushthe K2 button three times
Samsung Electronics
Manaul address setting
Address setting another case
Auto address setting
Operation case
Samsung Electronics
9-10
Try-runCheck Error
9-3-1Basic Check Flow
9-3Fault Diagnosis by Symptom
Samsung Electronics
Basic Check Flowcont
Troubleshooting
9-13
LED1 Red : ALWAYS ON
9-3-2Checking Outdoor Controller
Samsung Electronics
9-14
5.Checking DC voltage on each point
Samsung Electronics
9-3-4Checking Power cable and Communication cable
9-3-5Checking Temperature sensor
9-3-3Checking Indoor controller
%WTTGPV8UVGRXCNWGECPOQPKVQTGFYKVJ8+9/1&
DA?GEJC3
-ELAI=P?DEJC
5GGCWNV&KCIPQUKUQH/CLQT2CTVU
9-4-1Cautions for Part Replacement
9-4-2Procedure
9-4PCB Inspection
10. Reference for Installation
10-1Selecting Area for Installation
10-1-1Indoor Unit
10-2
10-1-3Remote Control Unit
10-1-2Outdoor Unit
Samsung Electronics
MH050FXCA2A
10-2Connecting Up and Purging the Circuit
MH080FXCA4A
Samsung Electronics
10-4
10-3-1MH050FXCA2A
10-3Refrigerant Refill
10-3-2MH080FXCA4A
Samsung Electronics
10-6
%5#5CA*%8#5C4A
/ABNECAN=JP@FQOPIAJP
10-5Flare Nut Fixing Torque
Samsung Electronics
10-8
10-6-1MH050FXCA2A
10-6Pump down Procedure
10-6-2MH080FXCA4A
Samsung Electronics
10-10
4 A / O O O
11. Reference Information
11-1Index for Model Name
FREEJOINTMULTIFOREUROPE
Product Type
Index for Model Name cont
FREEJOINTMULTIFOREUROPE
07 / O O O
Samsung Electronics
11-2Refrigerating Cycle Diagram
MH050FXCA2A
11-3
Reference Information
MH080FXCA4A
Samsung Electronics
11-4
11-3Pressure & Capacity mark
Power/Heat
11-5Q & A for Non-trouble
Samsung Electronics
11-6
Q & A for Non-troublecont
Q & A for Non-troublecont
Samsung Electronics
11-8
Effectiveness of air supplier
11-6Common sense of refrigeration
11-6-1Air supplier
Air supplier?
ELECTRONICS
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