ComfortStar CARAT18-CD User Manual

Name: ComfortStar CARAT18-CD
Brand: ComfortStar
Rating: 4 (1 reviews)

65 pages

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Summary and features

SERVICE MANUAL

FOR 23SEER DIAMOND SPLITS

CARAT18-CD

CARAT24-CD

Service Manual1
Technical Specifications2
Part Name6
Indoor Unit6
Outdoor Unit6
Outline and Installation Dimensions of Indoor Unit7
Outline and Installation Dimensions of Outdoor Unit8
Electrical Circuit Diagram9
PCB Function Manual and Operation Method10
Temperature Parameters10
Basic Function of System10
Display State of Indoor Indicators11
Failure Display of Indoor Unit11
State of Indoor Display Board11
Other Control Targets11
Sleep Function12
In Heating Mode12
In Cooling Mode12
Timing Function12
Outdoor Unit Part13
Input Parameter Compensation and Calibration13
Basic Functions13
Locked Protection of PG Motor13
Special Functions14
Dehumidifying Mode14
Air-Supplying Mode14
Heating Mode14
Defrosting Control under Heating Mode15
4-Way Valve Control15
Charging Control15
PFC Function Control15
Starting Estimation16
Raising the Frequency Slowly16
Frequency Limited16
Reducing Frequency at Normal Speed16
Power Turn-Off16
Overload Protection Function at the Mode of Heating17
Power Turn-Off17
Protective Function for Discharge Temperature of Compressor17
You Should17
Reducing Frequency at High Speed and Power Turn-Off18
Protective Function for Electric Current18
Voltage Sag Protection18
Communication Fault18
Voltage Abnormity Protection for DC Bus20
Abnormity Protection for Four-Way Valve20
PFC Protection20
Failure Detection for Sensor20
Operation of Wireless Remote Control21
SLEEP Button21
FAN Button21
CLOCK Button21
X-FAN Button22
TURBO Button22
TEMP Button22
Timer on Button23
Timer off Button23
Health Button23
I Feel Button23
Guide for Operation- General Operation24
Guide for Operation- Optional Operation24
Introduction for Special Function24
About Blow Function24
About Lock25
About Swing up and down25
About Switch between Fahrenheit and Centigrade25
About New Function of Defrosting25
Changing Batteries and Notices25
Displayer Indicator Light Control of Indoor Unit26
Emergency Operation26
Explosive View and Spare Parts List27
Exploded View of Components and Parts of Indoor Unit27
Exploded View of Components and Parts of Outdoor Unit29
Trouble-Shooting35
Indoor PC Board39
Indoor PCB40
Front Side40
Back Side VIEW41
The Key Testing Points(Back Side)42
Ap1 Unit43
PCB Front Side44
3 Key Testing Point45
PCB of Outdoor Unit (Front Side)47
PCB of Outdoor Unit (Back Side)47
Malfunctions48
Discharging Method48
Remove the Inverter Cover48
Key Test Spot49
Flashing LED of Indoor/Outdoor Unit and Primary Judgement49
How to Check Simply the Main Part53
Capacitor Charge Fault53
Main Check Points53
Fault Diagnosis Process53
IPM Protection, Out-Of-Step Fault, Compressor Phase Overcurrent54
High Temperature and Overload Protection Diagnosis56
Start-Up Failure57
Whether the System Pressure Is too High?58
Whether the Input Voltage Is too Low?58
Wether the PMV Is Connected Well or Not? Is PMV Damaged?59
Is Refrigerant Leaked?59
Power Factor Correct or (PFC) Fault60
Communication Malfunction61
Flow Chart for Outdoor Communitcation Circuit Detecting62
Appendix 1: Form for Indoor/Outdoor Unit's Ambient Sensor Numerical Value of Resistance63
Appendix 3: Form for Indoor/Outdoor Unit's Air Exhaust Temperature Sensor Numerical Value of Resistance65

Brand	ComfortStar
Model	CARAT18-CD
Category	Air Conditioner
Language	English

ComfortStar CARAT18-CD User Manual

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