Samsung AC048BXUPCH User Manual

AIR CONDITIONER CONTENTS
SYSTEM AIR CONDITIONER
SINGLE for North America(R-410A, Heat Pump)
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram and Parts List
6. Wiring Diagram
7. Reference Sheet
Unitary Outdoor Unit AHU Control Unit
AC024BXUPCH
AC036BXUDCH
AC036BXUPCH
AC048BXUPCH
AC060BXUPCH
MXD-U000XN

Samsung AC048BXUPCH Specifications

General

Brand	Samsung
Model	AC048BXUPCH
Category	Air Conditioner
Language	English

Summary

Precautions

Precautions for Handling Refrigerant for Air Conditioner

Product Specifications

Disassembly and Reassembly

Outdoor unit

Step-by-step instructions for disassembling the outdoor unit components.

AHU Control Unit

Step-by-step instructions for disassembling the AHU control unit.

Troubleshooting

Diagnostic Checklist

Test operation mode and check mode

Troubleshooting by symptoms

Guidance on identifying and resolving problems based on observed symptoms.

When the outdoor unit power is not ON – Initial Diagnosis : Single phase products

Troubleshooting steps for when the outdoor unit does not power on.

Communication error between outdoor unit INV ↔ MAIN MICOM (1 min.) – (E203)

Diagnostic steps for communication errors between outdoor unit INV and Main MICOM.

Outdoor sensor error - (E221, E231, E251, E320)

Troubleshooting procedures for outdoor sensor errors.

High Pressure sensor error (Open/Short) – (E291)

Steps for diagnosing and resolving high-pressure sensor errors.

Suction Temperature sensor error (Open/Short) – (E308)

Troubleshooting guide for suction temperature sensor errors.

Compressor down due to freezing control – (E403)

Steps to address compressor issues caused by freezing control.

System stop due to overload protection control – (E404)

Troubleshooting for system stops due to overload protection.

Comp. Down due to High Pressure Protection Control – (E407)

Diagnosis and resolution for compressor shutdown due to high-pressure protection.

Comp. down due to low pressure sensor protection (E410)

Troubleshooting steps for compressor issues related to low-pressure sensor protection.

Comp. down due to disharge temperature protection control – (E416)

Steps for resolving compressor errors due to discharge temperature protection.

Heating operation restricted at outdoor temperature over Theat_high value (default : 86°F(30°C)) - (E440)

Troubleshooting for heating operation restrictions due to high outdoor temperatures.

Cooling operation restricted at outdoor temperature over Tcool_low value (default : 32°F(0°C)) - (E441)

Troubleshooting for cooling operation restrictions due to low outdoor temperatures.

Outdoor unit FAN error - (E458, E475)

Compressor error – (E461, 467)

Current error – (E462, 484)

Over Load Protection Error (E463)

IPM (Over Current) error – (E464)

Compressor over load error- (E465)

DC Link voltage under/over error - (E466), Overvoltage of H/W detect DC Link error – (E483), AC Input voltage sensor error – (E488)

Current sensor error – (E468)

DC Link voltage sensor error (Short/Open) – (E469)

Outdoor unit EEPROM Read/Write error (Option) – (E470), Outdoor unit EEPROM Read/Write error (H/W) - (E471)

IPM(IGBT Module) heat sink error – (E474), IPM overheat error - (E500)

Input current sensor error (Short/Open) - (E485)

Error due to high pressure switch open or compressor down by high pressure - (E507)

Gas leakage error – (E554)

Blockage deteced on high pressure pipe duing heating operation – (E534)