MITSUBISHI ELECTRIC PAA-A18AA1 Air Conditioners User Manual

: June 12, 2024
: Mitsubishi Electric

Table of Contents

EXTERNAL PARTS
HEX ASSEMBLY PARTS
CONTROL BOX PARTS
References
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PAA-A18AA1 Air Conditioners
User Manual MITSUBISHI ELECTRIC PAA-A18AA1 Air
Conditioners MANUFACTURED FOR:
MITSUBISHI ELECTRIC US, INC.
Air Conditioners
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1 and all -M
service reference models
SERVICE PARTS MANUAL

EXTERNAL PARTS

MITSUBISHI ELECTRIC PAA-A18AA1 Air Conditioners -
parts

No.| Service Part No.| Part Name| Symbol in Wiring Diagram| Quantity per unit| Remarks
---|---|---|---|---|---
PAA-A
18AA1| 18BA1| 24AA1| 24BA1| 30AA1| 30BA1| 36BA1| 36CA1| 42BA1| 42CA1
1| U41 011 668| TOP COVER ASSY 14.5| | 1| | 1| | 1| | | | | |
U41 012 668| TOP COVER ASSY 17.5| | | 1| | 1| | 1| 1| | 1| |
U41 013 668| TOP COVER ASSY 21| | | | | | | | | 1| | 1|
2| U41 006 639| FRONT PANEL ASSY 14.5M| | 1| | 1| | 1| | | | | | NOTE: The nameplate must be removed from the original front panel and placed on the new front panel. Document the model and serial number before removing nameplate and contact distributer for a replacement nameplate if necessary.
U41 007 639| FRONT PANEL ASSY 17.5M| | | 1| | 1| | 1| | | |
U41 008 639| FRONT PANEL ASSY 17.5L| | | | | | | | 1| | 1|
U41 009 639| FRONT PANEL ASSY 21L| | | | | | | | | 1| | 1
3| U41 023 638| LEFT PANEL ASSY, MED| | 1| 1| 1| 1| 1| 1| | | | |
U41 024 638| LEFT PANEL ASSY, LARGE| | | | | | | | 1| 1| 1| 1|
4| U41 019 638| BACK PANEL ASSY 145M| | 1| | 1| | 1| | | | | |
U41 020 638| BACK PANEL ASSY 175M| | | 1| | 1| | 1| | | | |
U41 021 638| BACK PANEL ASSY 175L| | | | | | | | 1| | 1| |
U41 022 638| BACK PANEL ASSY 21L| | | | | | | | | 1| | 1|

5

| U41 025 638| RIGHT PANEL ASSY, MED| | 1| 1| 1| 1| 1| 1| | | | |
U41 018 638| RIGHT PANEL ASSY, LARGE| | | | | | | | 1| 1| 1| 1|
6| U41 008 087| SCREW H 5X10 KNURLED| | 30| 30| 30| 30| 30| 30| 30| 30| 30| 30| Pack of 10
7| U41 013 635| PANEL PIPE ASSY| | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|
8| U41 011 635| PANEL PIPE ASSY| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
9| U41 012 635| PANEL PIPE ASSY| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
10| U71 001 086| SENSOR BRACKET| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| Also included in Accessory Bag, Item 15
11| U71 002 200| THERMISTOR 8MM| TH1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| Also included in Accessory Bag, Item 15
12| U41 003 541| FLOAT SWITCH+
LEAD WIRE ASSY CN4F|

CN4F

|

1

|

1

|

1

|

1

|

1

|

1

|

1

|

1

|

1

|

1

| Includes Lead Wire CN4F Also included in Accessory Bag,

Item 15

13| U41 015 392| LEAD WIRE ASSY CN4F| CN4F| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| This part is included in U41003541, Float Switch + LEAD WIRE service part kit.
Also included in Accessory Bag, Item 15
14| U41 010 200| THERMOSTAT (NAT)| TB-B| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| Also included in Accessory Bag, Item 15
15| U41 009 818| ACCESSORY BAG, PAA| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|

16

| U41 004 130| L BRACKET 14.5| | 1| | 1| | 1| | | | | |
U41 005 130| L BRACKET 17.5| | | 1| | 1| | 1| 1| | 1| |
U41 006 130| L BRACKET 21| | | | | | | | | 1| | 1|

HEX ASSEMBLY PARTS

MITSUBISHI ELECTRIC PAA-A18AA1 Air Conditioners - parts
1

No.| Service Part No.| Part Name| Symbol in Wiring Diagram| Quantity per unit| Remarks
---|---|---|---|---|---
PAA-A

18AA1

|

18BA1

|

24AA1

|

24BA1

|

30AA1

|

30BA1

|

36BA1

|

36CA1

|

42BA1

|

42CA1

1| U41 009 200| TH2-TH5 SERVICE KIT, PAA| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| Includes TH2-TH5 Wire Assy, 2 different Insulator Pipe Covers, and 2 ties ALL OF WHICH ARE SPECIFIED FOR USE IN THE PAA HIGH TEMP AREAS
2| U41 007 668| TOP PLATE DR ASSY, S| | 1| 1| | | | | | | | |
U41 008 668| TOP PLATE DR ASSY, L| | | | 1| 1| 1| 1| | | | |
U41 009 668| TOP PLATE DR ASSY, L-B| | | | | | | | 1| | 1| |
U41 010 668| TOP PLATE DR ASSY, L-C| | | | | | | | | 1| | 1|
3| U41 019 529| SIDE PAN BRACKET| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
5| U41 014 529| DRAIN PAN ASSY LOWER 14.5| | 1| | 1| | 1| | | | | |
U41 015 529| DRAIN PAN ASSY LOWER 17.5| | | 1| | 1| | 1| 1| | 1| |
U41 016 529| DRAIN PAN ASSY LOWER 21| | | | | | | | | 1| | 1|

4

| U41 017 529| DRAIN PAN ASSY SIDE, S| | 1| 1| 1| 1| 1| 1| | | | |
U41 018 529| DRAIN PAN ASSY SIDE, L| | | | | | | | 1| 1| 1| 1|
6| U41 010 087| SCREW WFT 5X12| | 12| 12| 14| 14| 14| 14| 18| 18| 18| 18| Pack of 10 Also used in the Control Box

7

| U41 002 122| NUT FLARE 3/8| | | | 1| 1| 1| 1| 1| 1| 1| 1|
U41 004 122| NUT FLARE 1/4| | 1| 1| | | | | | | | |

8

| U41 003 122| NUT FLARE 1/2F| | 1| 1| | | | | | | | |
U41 001 122| NUT FLARE 5/8| | | | 1| 1| 1| 1| 1| 1| 1| 1|

9

| U41 043 480| HEX ASSY 14.5S PAA| | 1| | | | | | | | | | Includes all parts on this page (TH2-TH5 wire assembly is pre- installed)
U41 044 480| HEX ASSY 17.5S PAA| | | 1| | | | | | | | | Includes all parts on this page (TH2-TH5 wire assembly is pre- installed)
U41 039 480| HEX ASSY 14.5M PAA| | | | 1| | 1| | | | | | Includes all parts on this page (TH2-TH5 wire assembly is pre- installed)
U41 040 480| HEX ASSY 17.5M PAA| | | | | 1| | 1| | | | | Includes all parts on this page (TH2-TH5 wire assembly is pre- installed)
U41 041 480| HEX ASSY 17.5L PAA| | | | | | | | 1| | 1| | Includes all parts on this page (TH2-TH5 wire assembly is pre- installed)
U41 042 480| HEX ASSY 21L PAA| | | | | | | | | 1| | 1| Includes all parts on this page (TH2-TH5 wire assembly is pre- installed)

CONTROL BOX PARTS

MITSUBISHI ELECTRIC PAA-A18AA1 Air Conditioners - parts
2

No.| Service Part No.| Part Name| Symbol in Wiring Diagram| Quantity per unit| Remarks
---|---|---|---|---|---
PAA-A
18AA1| 18BA1| 24AA1| 24BA1| 30AA1| 30BA1| 36BA1| 36CA1| 42BA1| 42CA1
1| U41 005 812| Control Box Assy 18| | 1| 1| | | | | | | | |
U41 006 812| Control Box Assy 24| | | | 1| 1| | | | | | |
U41 007 812| Control Box Assy 30| | | | | | 1| 1| | | | |
U41 008 812| Control Box Assy 36| | | | | | | | 1| 1| | |
U41 009 812| Control Box Assy 42| | | | | | | | | | 1| 1|
2| U41 010 087| SCREW WFT 5X12| | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| Pack of 10 Also used in the HEX assemblies.
3| U41 010 812| CONTROL BOX COVER| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
4| U41 003 104| BUSHING| | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| Pack of 2
5| INFO ONLY| SCREW M4 x 8| | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| FIELD SUPPLIED
6| U41 019 392| LEAD WIRE ASSY CNH04| CNH04| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
7| U41 022 392| LEAD WIRE ASSY CNH07| CNH07| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
8| U41 023 392| LEAD WIRE ASSY CN22| CN22| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
9| U41 012 280| PCBA IDU CTL BRD| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
10| INFO ONLY| SCREW M4 x 10| | 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| FIELD SUPPLIED
11| U41 001 145| CLIPS & SUPPORTS| | 10& 13| 10 & 13| 10 & 13| 10 & 13| 10 & 13| 10 & 13| 10 & 13| 10 & 13| 10 & 13| 10 & 13| Pack of 5 each: clips & supports.
12| U41 005 280| PCA INDOOR POWER| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
13| U41 024 392| LEAD WIRE ASSY POWER| CND| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
14| INFO ONLY| SCREW M4 X20| | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| FIELD SUPPLIED
15| U41 006 246| TERMINAL BLOCK, BED, LABEL KIT| TB-A TB-B TB-C| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| Includes qty 1 terminal bed, qty 2 Terminal Blocks, qty 1 label
16| U41 016 392| LEAD WIRE ASSY CNH01| CNH01| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
17| U41 001 225| PAA RELAY AND UI BD ASSEMBLIES| | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
18| U41 020 392| LEAD WIRE ASSY CNH05| CNH05| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
19| U41 021 392| LEAD WIRE ASSY CNH06| CNH06| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
20| U41 018 392| LEAD WIRE ASSY CNH03| CNH03| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|
–| U41 015 392| LEAD WIRE ASSY CN4F| CN4F| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| This part is shown in the External Service Parts section. It is available individually, as part of the Float Switch + LEAD WIRE kit, and as part of the Accessory Bag.

Optional Items MITSUBISHI ELECTRIC PAA-A18AA1 Air Conditioners - parts
3

OPTIONAL ITEMS

This product is designed and intended for use in the residential and commercial environment.
Please be sure to put the contact address/telephone number on this manual before handing it to the customer.

Manufactured for:
MITSUBISHI ELECTRIC US, INC.
www.mitsubishielectric-usa.com
Toll Free: 800-433-4822
MEUS DOC# MD-2025-K004 Ver. 1, October 2022
Specifications are subject to change without notice.
© 2022 Mitsubishi Electric US, Inc.