Technical Data
Please Read Before Starting
WHO should USE this Manual Table of Contents
Electrical Data III
Specifications
Performance
Specifications Unit Specifications
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
Major Component Specifications Indoor Unit
Specifications
Model No XH3642 Source
Model No XH4242 Source
Model No TH2442 Source
Electronic refrigerant control valve
Auto louver motor
Model No TH3642 Source
Model No TH4242 Source
Model No UH2442 Source
Model No UH3642 Source
Model No KH2442 Source
Fan
Louver Motor
Model No KH3642 Source
Switch Assy
Major Component Specifications Outdoor Unit
Model No CH3642 Source
ZR47KC PFV
Model No CH4242 Source
Other Component Specifications Indoor Unit
ATR IIK224A
Model No XH3642 Power Transformer
Model No XH4242 Power Transformer
Model No TH2442 Power Transformer
Thermistor Coil sensor
Thermistor Room or 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
Power Relay
Specifications Other Component Specifications Outdoor Unit
Model No CH2442
Thermistor PTC
FC 1SUL
Model No CH3642
FC 2SUL
Model No CH4242
29/32
29/32
19/32
Type
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
Specifications Refrigerant Flow Diagram Outdoor Unit CH4242
Temperature Indoor Air Intake Outdoor Air Intake
Operating Range
Cooling Capacity Indoor Unit XH2442 Outdoor Unit CH2442
230V / 1 phase / 60Hz
208V / 1 phase / 60Hz
Specifications Indoor Unit XH2442 Outdoor Unit CH2442
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
Level
Noise Criterion Curves Concealed Duct Type
Specifications Noise Criterion Curves Wall Mounted Type
230 208 V, 1 Phase, 60 Hz
Specifications Noise Criterion Curves Outdoor Units
How to read the diagram
Specifications Increasing the Fan Speed
Type
Indoor Fan Performance
Axis AIR Velocity
Model 24 Type
Model 42 Type
Model 36 Type
Model KHS2442
Specifications Air throw distance chart Wall Mounted Type
Installation Instructions Tubing Length
Models CH2442
Tubing Data
Ceiling-Mounted Type
Indoor Unit
Way Air Discharge Type Concealed-Duct Type
Wall-Mounted Type
Outdoor Unit
Case of multiple installations
Installing the Outdoor Unit in Heavy Snow Areas
Specifications Air Discharge Chamber for Top Discharge
Precautions When Installing in Heavy Snow Areas
Use high voltage wire 300 V *1
General Precautions on Wiring
Wiring System Diagrams
CH Type
XH, TH, UH Type
RED BLK
Address should be set before turning the power on
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
Chart Summary and Explanations
Room Temperature Control
Processes and functions
Cooling
Processes and functions Heating
Cold Draft Prevention Heating Cycle
Automatic Fan Speed Indoor Unit
Chart Explanations and notes
Outdoor Fan Speed Control
Outdoor unit coil Outdoor fan Temperature C2 Motor FMo
Freeze Prevention Cooling
Condensing Temperature Control Cooling
This function prevents the air conditioner from overloading
Overload Protection Heating
Discharge temperature is sensed by TH8 discharge gas sensor
Discharge Temperature Control Cooling and Heating
Auto. Mode for Automatic Heating/Cooling Switching
Processes and functions
Defrosting Control, Outdoor Heat Exchanger Coil Heating
Time Chart for Defrosting
11 4-Way Valve, Solenoid Control
Normal Control Mode
Processes and functions Auto Control Mode
Automatic Restart after Power Interruption
Compressor Discharge Gas Temperature
Electronic Refrigerant Control Valve
Heating Except During Defrosting
Overload Protection
Compressor Current Detection Circuit
Electronic Refrigerant Control Valve Control
Contents and Order of control
Refrigerant flow distribution control
Fuzzy control optimal refrigerant flow rate control
Voltage Detection Control
Electrical Data
Way Air Discharge Semi-concealed Type XH2442, XH3642, XH4242
Indoor Units
Schematic Diagram
Controller
Electrical data Ceiling Mounted Type TH2442, TH3642, TH4242
Ceiling Mounted Type TH2442, TH3642, TH4242
Concealed Duct Type UH2442, UH3642 Electrical data
Electric Wiring
Electrical data Concealed Duct Type UH2442, UH3642
Schematic Diagram
ORG BLK
Wall Mounted Type KH2442 Electrical data
Electrical data Wall Mounted Type KH2442
Wall Mounted Type KH3642 Electrical data
Electrical data Wall Mounted Type KH3642
III
CH2442
FMO
Outdoor Units
III
CH3642
FMO1 FMO2
Controller
CH4242
RY4 FM2 RY5 RC1 RC2 RC3 CT1 DC12V
Service Procedures
Service procedures
Troubleshooting
Check power supply
Service procedures Check before and after Troubleshooting
0458MI
Electronic refrigerant control valve is defective
Service procedures Meanings of alarm messages
Alarm
Message
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
Finally, press Button
Change the period of the filter timer Ref. Fig
Checking the Electrical Components
Power Supply Wires
Measurement of Insulation
Resistance
Service procedures Checking the Protective Devices
Power transformer TR1 Indoor unit
Service procedures Checking the Electrical Parts
Method Used to Replace Fuse on PCB Ass’y
When replacing the fuse, be
Sure not to break down Varistor
Pliers
Model FMCA-1UL
Thermistor Characteristic Curv
Central control when using the system controller
Service procedures PCB Setting
Setting of indoor control PCB No setting necessary
Standard control single outdoor unit
Outdoor unit R.C. address setting method
Service procedures C. Address Setting Method
Automatic Address Setting Method
Service procedures Items to Check Prior to Test Run
Service procedures Test Run
Test run procedure
Test RUN button is
Unit side
CN33 YEL Room Temp E2P-ROM
PCBs and Their Location
CR-CH2442
Service procedures Checking procedure for each PC Board
Shorting CK.L or CK.H pin of the outdoor PCB
Service procedures 13 TMX60 pins
Central Region