Lennox MMDA018S4-1P User Manual

Lennox Mini-Split Service Manual / Page 6
SECTION 13 - FAULT CODES .............................................................................................126
SECTION 13.1 - QUICK REFERENCE GUIDE - FAULT CODES ........................................128
Single Zone 009/012 115VAC/208-230VAC Outdoor Units Quick Reference ...............129
Single Zone 018/030 208-230VAC Outdoor Units Quick Reference ............................130
Multi-Zone Outdoor Units Quick Reference .................................................................131
Indoor Unit Fault Code Units Quick Reference For ALL Indoor Units ........................132
SECTION 13.2 - TROUBLESHOOTING SINGLE ZONE OUTDOOR UNITS .......................133
SECTION 13.3 - TROUBLESHOOTING MULTI-ZONE OUTDOOR UNITS ...........................140
E0 Fault Code ................................................................................................................143
E0 Flow Chart ................................................................................................................144
E2 Fault Code ................................................................................................................145
E2 Flowchart ..................................................................................................................146
E3 Fault Code ................................................................................................................149
E3 Flow Chart ................................................................................................................150
E4 Fault Code ................................................................................................................152
E4 Flow Chart ................................................................................................................153
E5 Fault Code ................................................................................................................154
E5 Flow Chart ................................................................................................................155
E6 Fault Code ................................................................................................................160
E6 Flow Chart ................................................................................................................161
E8 Fault Code ................................................................................................................164
E8 Flow Chart ................................................................................................................165
F1 Fault Code ................................................................................................................168
F1 Flow Chart ................................................................................................................169
F2 Fault Code ................................................................................................................170
F2 Flow Chart ................................................................................................................171
F3 Fault Code ................................................................................................................172
F3 Flow Chart ................................................................................................................173
F4 Fault Code ................................................................................................................174
F4 Flow Chart ................................................................................................................175
F5 Fault Code ................................................................................................................176
F5 Flow Chart ................................................................................................................177
F6 Fault Code ................................................................................................................178
P1 Fault Code ................................................................................................................179
P1 Flow Chart ................................................................................................................180
P2 Fault Code ................................................................................................................182
P2 Flow Chart ................................................................................................................183
P3 Fault Code ................................................................................................................185
P3 Flow Chart ................................................................................................................186
P4 Fault Code ................................................................................................................188
P4 Flow Chart ................................................................................................................189
P5 Fault Code ................................................................................................................190
P5 Flow Chart ................................................................................................................191
P6 Fault Code ................................................................................................................192
P6 Flowchart ..................................................................................................................193

Lennox MMDA018S4-1P Specifications

General

Cooling Capacity	18, 000 BTU/h
SEER Rating	16
Voltage	208/230V
Phase	1
Refrigerant Type	R-410A
Weight (Outdoor Unit)	180 lbs

Summary

Lennox Mini-Split Systems Service Manual

SECTION 1 - OUTDOOR UNIT DATA

MPA Single Zone Condensing Units

Details on MPA single zone condensing units, including model number identification and specifications for various tonnages.

MPA Multi-Zone Condensing Unit

Details on MPA multi-zone condensing units, including model number identification and specifications for various tonnages.

SECTION 2 - INDOOR UNIT DATA

SECTION 3 - INSTALLATION DIMENSIONS OF OUTDOOR UNITS

Single Zone Installation Dimensions

Provides installation dimensions for MPA single zone outdoor units.

Multi-Zone Installation Dimensions

Provides installation dimensions for MPA multi-zone outdoor units.

SECTION 4 - INSTALLATION DIMENSIONS OF INDOOR UNITS

SECTION 5 - INDOOR UNIT COMBINATIONS

Multi-Zone System Combinations

Lists valid combinations of indoor units for multi-zone systems based on outdoor unit capacity.

SECTION 6 - REFRIGERATION PIPE WORK

Piping Limitations and Connections

Covers piping limitations, line set diameters, and connection usage for single and multi-zone systems.

SECTION 9 - WIRING DIAGRAMS

Single Zone Wiring Diagrams

Provides wiring diagrams for various single zone outdoor and indoor units.

Multi-Zone Wiring Diagrams

Indoor Unit Wiring Diagrams

SECTION 12 - START UP

General Start Up Information

SECTION 13 - FAULT CODES

Quick Reference Guide - Fault Codes

Provides quick reference tables for fault codes for various unit types.

Troubleshooting Single Zone Outdoor Units

Guides for troubleshooting single zone outdoor units, including fault code definitions.

Troubleshooting Multi-Zone Outdoor Units

Guides for troubleshooting multi-zone outdoor units, including fault code definitions.

Indoor Unit Fault Codes

Lists fault codes and descriptions for all indoor units.