Technical Data
Please Read Before Starting
WHO should USE this Manual Table of Contents
Electrical Data III
Specifications
Specifications Unit Specifications
Performance
Model No Indoor Unit XH3642 Outdoor Unit
Model No Indoor Unit XH4242 Outdoor Unit
Model No Indoor Unit TH2442 Outdoor Unit
Model No Indoor Unit TH3642 Outdoor Unit
Model No Indoor Unit TH4242 Outdoor Unit
Model No Indoor Unit UH2442 Outdoor Unit
Model No Indoor Unit UH3642 Outdoor Unit
Model No Indoor Unit KH2442 Outdoor Unit
Model No Indoor Unit KH3642 Outdoor Unit
Specifications
Major Component Specifications Indoor Unit
Model No XH3642 Source
Model No XH4242 Source
Auto louver motor
Model No TH2442 Source
Electronic refrigerant control valve
Model No TH3642 Source
Model No TH4242 Source
Model No UH2442 Source
Model No UH3642 Source
Louver Motor
Model No KH2442 Source
Fan
Switch Assy
Model No KH3642 Source
Major Component Specifications Outdoor Unit
Model No CH3642 Source
Model No CH4242 Source
ZR47KC PFV
Other Component Specifications Indoor Unit
Model No XH3642 Power Transformer
ATR IIK224A
Model No XH4242 Power Transformer
Thermistor Room or coil sensor
Model No TH2442 Power Transformer
Thermistor Coil sensor
Model No TH3642 Power Transformer
Model No TH4242 Power Transformer
Model No UH2442 Power Transformer
Model No UH3642 Power Transformer
Model No KH2442 Power Transformer
Model No KH3642 Power Transformer
Model No CH2442
Specifications Other Component Specifications Outdoor Unit
Power Relay
Thermistor PTC
Model No CH3642
FC 1SUL
Model No CH4242
FC 2SUL
29/32
29/32
Type
19/32
59-1/4Suspension bolt hole pitch
Dimension inch
56-25/32 Air outlet duct flange
Thickness more than T1/16 inch
1911XS
Dimensional data Indoor unit Wall Mounted Type
Specifications Dimensional Data Outdoor Unit CH2442
Specifications Dimensional Data Outdoor Unit CH3642, CH4242
Outdoor Unit CH3642 Indoor Unit 36 Type
Operating Range
Specifications Refrigerant Flow Diagram Outdoor Unit CH4242
Temperature Indoor Air Intake Outdoor Air Intake
230V / 1 phase / 60Hz
Cooling Capacity Indoor Unit XH2442 Outdoor Unit CH2442
Specifications Indoor Unit XH2442 Outdoor Unit CH2442
208V / 1 phase / 60Hz
Specifications Indoor Unit XH3642 Outdoor Unit CH3642
Indoor Unit XH3642
Indoor Unit XH4242
40,000 BTU/h
Indoor Unit TH2442
21,600 BTU/h
Indoor Unit TH3642
33,000 BTU/h
Indoor Unit TH4242
31,000 7222.2
Specifications Indoor Unit UH2442 Outdoor Unit CH2442
Indoor Unit UH2442
Specifications Indoor Unit UH3642 Outdoor Unit CH3642
950 CFM
Specifications Indoor Unit KH2442 Outdoor Unit CH2442
21,000 BTU/h
Specifications Indoor Unit KH3642 Outdoor Unit CH3642
32,000 BTU/h
Specifications Heating Capacity
230V
Outdoor Unit CH4242
Indoor Unit TH3642
230V
Outdoor ambient temp. F C Indoor temp. F C 104
Indoor Unit KH3642 Outdoor Unit CH3642
Operating Outdoor ambient temp. F C Indoor temp. F C
208V
2193XS
2227XS
2194XS
2196XS
Low Pressure
320 Psig 300 280
Outdoor fan speed Low High 340 Psig 320 300
1165XS
Outdoor Unit CH3642
2229XS
Model
Specifications Noise Criterion Curves Ceiling Mounted Type
Noise Criterion Curves Concealed Duct Type
Level
Specifications Noise Criterion Curves Wall Mounted Type
Specifications Noise Criterion Curves Outdoor Units
230 208 V, 1 Phase, 60 Hz
Type
Specifications Increasing the Fan Speed
How to read the diagram
Indoor Fan Performance
Model 24 Type
Axis AIR Velocity
Model 36 Type
Model 42 Type
Specifications Air throw distance chart Wall Mounted Type
Model KHS2442
Tubing Data
Installation Instructions Tubing Length
Models CH2442
Way Air Discharge Type Concealed-Duct Type
Indoor Unit
Ceiling-Mounted Type
Wall-Mounted Type
Case of multiple installations
Outdoor Unit
Specifications Air Discharge Chamber for Top Discharge
Installing the Outdoor Unit in Heavy Snow Areas
Precautions When Installing in Heavy Snow Areas
General Precautions on Wiring
Use high voltage wire 300 V *1
XH, TH, UH Type
Wiring System Diagrams
CH Type
Address should be set before turning the power on
RED BLK
Cooling
Specifications Indoor model XH3642 / Outdoor model CH3642
133.9
Specifications Indoor model TH2442 / Outdoor model CH2442
Specifications Indoor model TH3642 / Outdoor model CH3642
Specifications Indoor model TH4242 / Outdoor model CH4242
Specifications Indoor model UH2442 / Outdoor model CH2442
Specifications Indoor model UH3642 / Outdoor model CH3642
Specifications Indoor model KH2442 / Outdoor model CH2442
Specifications Indoor model KH3642 / Outdoor model CH3642
Processes and Functions
Processes and functions
Room Temperature Control
Chart Summary and Explanations
Cooling
Processes and functions Heating
Cold Draft Prevention Heating Cycle
Chart Explanations and notes
Automatic Fan Speed Indoor Unit
Outdoor unit coil Outdoor fan Temperature C2 Motor FMo
Outdoor Fan Speed Control
Freeze Prevention Cooling
Condensing Temperature Control Cooling
Overload Protection Heating
This function prevents the air conditioner from overloading
Discharge Temperature Control Cooling and Heating
Discharge temperature is sensed by TH8 discharge gas sensor
Auto. Mode for Automatic Heating/Cooling Switching
Processes and functions
Time Chart for Defrosting
Defrosting Control, Outdoor Heat Exchanger Coil Heating
Normal Control Mode
11 4-Way Valve, Solenoid Control
Automatic Restart after Power Interruption
Processes and functions Auto Control Mode
Heating Except During Defrosting
Compressor Discharge Gas Temperature
Electronic Refrigerant Control Valve
Compressor Current Detection Circuit
Overload Protection
Refrigerant flow distribution control
Contents and Order of control
Electronic Refrigerant Control Valve Control
Fuzzy control optimal refrigerant flow rate control
Voltage Detection Control
Electrical Data
Indoor Units
Way Air Discharge Semi-concealed Type XH2442, XH3642, XH4242
Schematic Diagram
Electrical data Ceiling Mounted Type TH2442, TH3642, TH4242
Controller
Ceiling Mounted Type TH2442, TH3642, TH4242
Electric Wiring
Concealed Duct Type UH2442, UH3642 Electrical data
Schematic Diagram
Electrical data Concealed Duct Type UH2442, UH3642
Wall Mounted Type KH2442 Electrical data
ORG BLK
Electrical data Wall Mounted Type KH2442
Wall Mounted Type KH3642 Electrical data
Electrical data Wall Mounted Type KH3642
CH2442
III
Outdoor Units
FMO
CH3642
III
FMO1 FMO2
CH4242
Controller
RY4 FM2 RY5 RC1 RC2 RC3 CT1 DC12V
Service Procedures
Troubleshooting
Service procedures
Service procedures Check before and after Troubleshooting
Check power supply
0458MI
Electronic refrigerant control valve is defective
Message
Service procedures Meanings of alarm messages
Alarm
Possible cause of Malfunction Alarm Message
Refrigerant Shortage
Service procedures Symptoms and parts to inspect
2096THSI
0335MI
Influenced by external noise
Yes Start
Is there connector contact defect? Correct the connection
0343MI
Symptom LCD on the remote controller displays Check E15
Symptom LCD on the remote controller displays Check E16
0346MI
Indoor fan does not operate
Outdoor fan does not operate
Use the test run procedure
Service procedures Check the sensor temperature readings
Accessing the service problem history
Check the remote controller itself for correct operation
1931MI
1932MI
1933MI
SM830082
Change the period of the filter timer Ref. Fig
Finally, press Button
Measurement of Insulation
Power Supply Wires
Checking the Electrical Components
Resistance
Service procedures Checking the Protective Devices
Service procedures Checking the Electrical Parts
Power transformer TR1 Indoor unit
Sure not to break down Varistor
When replacing the fuse, be
Method Used to Replace Fuse on PCB Ass’y
Pliers
Model FMCA-1UL
Thermistor Characteristic Curv
Setting of indoor control PCB No setting necessary
Service procedures PCB Setting
Central control when using the system controller
Standard control single outdoor unit
Service procedures C. Address Setting Method
Outdoor unit R.C. address setting method
Automatic Address Setting Method
Service procedures Items to Check Prior to Test Run
Test RUN button is
Service procedures Test Run
Test run procedure
Unit side
PCBs and Their Location
CN33 YEL Room Temp E2P-ROM
CR-CH2442
Service procedures Checking procedure for each PC Board
Service procedures 13 TMX60 pins
Shorting CK.L or CK.H pin of the outdoor PCB
Central Region