Willis WCM18MH18S Manuals

Manuals and User Guides for Willis WCM18MH18S. We have 1 Willis WCM18MH18S manual available for free PDF download: Service Manual

Willis WCM18MH18S Service Manual (130 pages)

Indoor/Outdoor Units

Brand: Willis | Category: Air Conditioner | Size: 38 MB

Table of Contents
2
Panels View
4
Product View
5
Specifications
6
Operation Characteristic Curve
11
Capacity Variation Ratio According to Temperature
12
Cooling and Heatng Data Sheet in Rated Frequency
13
Noise Curve
14
Outline Dimension Diagram
15
Refrigerant System Diagram
18
Indoor Unit
18
Outdoor Unit
18
Electrical Part
19
Wiring Diagram
19
PCB Printed Diagram
25
Function and Control
31
Buttons on Remote Controller
31
Icons on Display Screen
31
Mode Button
31
+ or - Button
32
Fan Button
32
Clock Button
32
Timer-On/Timer-Off Button
32
Function Introduction for Combination Buttons
33
X-Fan Button
33
Temp Button
33
Light Button
33
Operation Guide
34
Replacement of Batteries in Remote Controller
34
Brief Description of Modes and Functions
35
Cooling Mode
35
Dehumidifying Mode
35
Condition and Process of Defrost
36
Fan Mode
36
Auto Mode
36
Other Controls
37
Indoor Fan Control
38
Buzzer Control
38
Up-And-Down Swinging Control
38
Display
38
Drying Function
39
Memory Function When Interrupting the Power Supply
39
Indoor Part
40
Up and down Wind Blow Functions
41
General Timing
41
Moment Timing
41
Timing Change
41
Fault Detection of Thermo-Bulb
42
Forced Running Function of the Indoor Units
42
Power-Failure Memory Function
42
Locked Protection of Indoor Fan
42
Outdoor Part
43
Input Parameter Compensation and Calibration
43
Basic Functions
43
Defrosting Control
43
Control Logic
44
Heating Mode
44
Compressor Control
44
Outer Fans Control
44
Overload Protection Function
45
Protective Function for Discharge Temperature of Compressor
45
Voltage Sag Protection
46
Communication Fault
46
Module Protection
46
Module Overheating Protection
46
Compressor Overloads Protection
47
Starting-Up Failure Protection for Compressor
47
Out-Of-Step Protection for Compressor
47
Voltage Abnormity Protection for DC Bus
47
PFC Protection
48
Failure Detection for Sensor
48
Installation and Maintenance
49
Safety Precautions for Installation
49
Main Tools for Installation and Maintenance
50
Installation Dimension Diagram
51
Installation Procedure
52
Installation Parts-Checking
53
Selection of Installation Location
53
Electric Connection Requirement
53
Installation of Indoor Unit
53
Install Wall-Mounting Frame
54
Outlet Pipe
54
Connect the Pipe of Indoor Unit
54
Install Drain Hose
54
Connect Wire of Indoor Unit
55
Bind up Pipe
55
Hang the Indoor Unit
55
Outdoor Unit Connection
55
Installation of Outdoor Unit
56
Fix Outdoor Unit
56
Connect Outdoor Electric Wire
56
Neeten the Pipes
56
Vacuum Pumping and Leak Detection
57
Check after Installation and Test Operation
57
Maintenance
58
Malfunction Analysis
58
Poor Cool (Heat) Operation
59
Flashing LED of Indoor/Outdoor Unit and Primary Judgement
62
Analysis of Processing of some of the Malfunction Display
69
Discharging Method
74
How to Check Simply the Main Part
75
Capacitor Charge Fault
75
IPM Protection, Out-Of-Step Fault, Compressor Phase Overcurrent
76
High Temperature and Overload Protection Diagnosis
78
Start-Up Failure
79
Out of Step Diagnosis for the Compressor
80
Overload and Air Exhaust Malfunction Diagnosis
81
Power Factor Correct or (PFC) Fault (a Fault of Outdoor Unit)
82
Communication Malfunction
83
Capacitor Charging Malfunction (Outdoor Unit Malfunction)
85
IMP Protection, Desynchronizing Malfunction
86
Diagnosis for High Temperature, Overload Protection
88
Diagnosis for Failure Start up Malfunction (Outdoor Unit Malfunction)
89
Diagnosis for Compressor Synchronism (Outdoor Unit Malfunction)
90
Diagnosis for Overload and Discharge Malfunction
91
Diagnosis Process for Outdoor Communication Circuit
93
Exploded Views and Parts Lists
94
Removal Procedure of Indoor Unit
103
Removal Procedure of Outdoor Unit
106
Reference Sheet of Celsius and Fahrenheit
124
Configuration of Connection Pipe
124
Pipe Expanding Method
125
List of Resistance for Ambient Temperature Sensor
126

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Willis WCM18MH18S Service Manual (130 pages)

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