Friedrich K?hl+ SM21M30 Manuals

Manuals and User Guides for Friedrich K?hl+ SM21M30. We have 1 Friedrich K?hl+ SM21M30 manual available for free PDF download: Service Manual

Friedrich K?hl+ SM21M30 Service Manual (87 pages)

115 & 208-230-Volt Cool Only, 208-230-Volt Cool with Electric Heat, 208-230-Volt Heat Pump with Electric Heat, 115-Volt Heat Pump

Brand: Friedrich | Category: Air Conditioner | Size: 3.43 MB

Table of Contents
2
Important Safety Information
3
Introduction
6
Model and Serial Number Location
6
Model Number Code
7
Unit Identiﬁ Cation
7
Specifications
8
Performance Data and Speciﬁ Cations
8
Unit Placement
9
Installation Information/Sleeve Dimensions/Circuit Rating
9
Electrical Data
10
Electrical Shock Hazard
11
Before Operating the Unit
11
Control Panel Operation
12
Special Functions
13
Alerts
13
Remote Effectiveness
16
Remote Control Operation
16
Electronic Control System Maintenance Operation
19
Unit Operation
22
Cool-Heat Set Points
23
Electronic Control Sequence of Operation
24
Unit Operation with a Wall-Stat
30
Removing the Front Cover and Unit Chassis
31
Replacing the ID Coil Thermistor
32
Replacing the Control Board
32
Remote Wall Thermostat
33
Low Voltage Interface Connector
33
Remote Wall Thermostat
34
Airﬂ Ow Selection and Adjustment
34
Components Testing
35
Components Testing
36
Refrigeration Sequence of Operation
37
Sealed Refrigeration System Repairs
39
Hermetics Components Check
43
Reversing Valve Description/Operation
44
Testing the Coil
45
Checking the Reversing Valve
45
Procedure for Changing Reversing Valve
46
Compressor Checks
47
Compressor Replacement
49
Routine Maintenance / Battery Check / Change
51
Service and Assistance
55
Performance Test Data Sheet and Sizing Guide
56
Error Codes and Alarm Status
57
Troubleshooting
58
Electronic Control Board Components Identiﬁ Cation
68
Cool Only Models
70
Wiring Diagrams
70
Wiring Diagram
71
Thermistors' Resistance Values
77
Remote Control Replacement Instructions
78
User Interface Service Kit
80
Instructions for Using Cooling Load Estimate Form
81
Cooling Load Estimate Form
82
Heat Load Form
83
Warranty
85

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Friedrich K?hl+ SM21M30 Service Manual (87 pages)

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