MITSUBISHI ELECTRIC PAA-A18 Air Conditioners Owner’s Manual

: June 17, 2024
: Mitsubishi Electric

Table of Contents

MITSUBISHI ELECTRIC PAA-A18 Air Conditioners Owner’s Manual
EXTERNAL PARTS
HEX ASSEMBLY PARTS
CONTROL BOX PARTS
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MITSUBISHI ELECTRIC PAA-A18 Air Conditioners Owner’s Manual

EXTERNAL 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

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

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

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.