Lennox MWMB018S4-*P Manuals

Manuals and User Guides for Lennox MWMB018S4-*P. We have 1 Lennox MWMB018S4-*P manual available for free PDF download: Service Manual

Lennox MWMB018S4-*P Service Manual (168 pages)

MINI-SPLIT SYSTEMS

Brand: Lennox | Category: Air Conditioner | Size: 17.02 MB

Table of Contents
2
1 Single and Multiple Zone Outdoor Units

5
2 M22A, M33A and M33B Cassette Non-Ducted Indoor Units

19
3 MMDA Ducted Indoor Units

24
- Model Number Identification
  24
- Indoor Unit Specifications
  24
- Indoor Unit Blower Data
  25
- Indoor Unit Dimensions
  28
- Indoor Unit Clearances
  29
4 MWMA and MWMB Wall Mounted Indoor Units

30
5 MCFA and MCFB Ceiling / Floor Indoor Units

32
6 Indoor / Outdoor Unit Combinations

35
7 Refrigeration Pipe Work

41
8 Master Valves (3- to 5-Zone Outdoor Units)

46
9 MPA, MPB and MLA Outdoor Unit Connections and Line Set Usage

47
10 Power Wiring for Outdoor and Indoor Units (Diagrams)

52
11 Outdoor Unit Diagrams

55
- MPA and MPB Single-Zone
  55
- MLA Single-Zone
  61
- MPA and MPB Multi-Zone
  62
- MLA Multi-Zone
  66
12 Indoor Unit Diagrams

68
- Mwma And Mwmb Indoor Unit
  68
- M22A Indoor Unit
  68
- M33A And M33B Indoor Unit
  69
- Mmda Indoor Units
  70
- Mcfa And Mcfb Indoor Units
  72
13 Control Board Photos

75
14 Condensate Pipe Work Installation

77
15 Controls

82
- M0STAT60Q-1 Wireless Remote
  82
- M0STAT61Q-1 Wired Remote
  85
16 Connection to Centralized Controller

87
- Set Indoor Unit Address For Centralized Control
  87
- Indoor Unit Connection Points For Centralized Controller
  88
17 Indoor Unit Connection Points for ON/OFF Device

88
18 Indoor Unit Connection Points for Alarm Device

89
19 Start-Up

90
20 Quick Reference Guide - Error Codes

95
21 Single-Zone Outdoor Unit LED Locations

97
22 Multi-Zone Outdoor Unit Leds and SW1 Locations

101
23 Troubleshooting Outdoor Unit Error Codes

102
24 Indoor Unit Indicators and Controls

126
- Cassette Unit Display
  126
- Ducted Unit Display
  126
- Wall-Mounted And Ceiling/Floor Unit Displays
  127
25 Troubleshooting Indoor Unit Error Codes

128
26 Temperature Sensor Resistance Values

152
27 Discharge Temperature Sensor Resistance Values

153
28 Temperature Sensor Identification Table

154
29 Component Troubleshooting

154
- Compressor Check
  154
- Ipm Check
  155
- Ac Fan Motor
  156
- Four-Way Valve
  157
- Exv Check
  158
30 Component Protection

159
- Fan Motor
  159
- Inverter Module Protection
  159
- Low Voltage Protection
  159
- Compressor Current Limit Protection
  159
31 Specifications And Operations

160
- Capacity Request Calculations
  161
- Heating Mode
  162
- Defrost Control
  163
- Defrost Theory
  163
- Defrost Termination
  164
- Outdoor Fan Control
  164
- Four-Way Valve Control
  165
- Electronic Expansion Valve (EXV) Control
  166
32 Index

167

Lennox Categories

Furnace

Air Conditioner Heat Pump Indoor Fireplace Thermostat

More Lennox Manuals

Lennox MWMB018S4-*P Manuals

Lennox MWMB018S4-*P Service Manual (168 pages)

Table of Contents

1 Single and Multiple Zone Outdoor Units

2 M22A, M33A and M33B Cassette Non-Ducted Indoor Units

3 MMDA Ducted Indoor Units

4 MWMA and MWMB Wall Mounted Indoor Units

5 MCFA and MCFB Ceiling / Floor Indoor Units

6 Indoor / Outdoor Unit Combinations

7 Refrigeration Pipe Work

8 Master Valves (3- to 5-Zone Outdoor Units)

9 MPA, MPB and MLA Outdoor Unit Connections and Line Set Usage

10 Power Wiring for Outdoor and Indoor Units (Diagrams)

11 Outdoor Unit Diagrams

12 Indoor Unit Diagrams

13 Control Board Photos

14 Condensate Pipe Work Installation

15 Controls

16 Connection to Centralized Controller

17 Indoor Unit Connection Points for ON/OFF Device

18 Indoor Unit Connection Points for Alarm Device

19 Start-Up

20 Quick Reference Guide - Error Codes

21 Single-Zone Outdoor Unit LED Locations

22 Multi-Zone Outdoor Unit Leds and SW1 Locations

23 Troubleshooting Outdoor Unit Error Codes

24 Indoor Unit Indicators and Controls

25 Troubleshooting Indoor Unit Error Codes

26 Temperature Sensor Resistance Values

27 Discharge Temperature Sensor Resistance Values

28 Temperature Sensor Identification Table

29 Component Troubleshooting

30 Component Protection

31 Specifications And Operations

32 Index

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