PAA-A18AA1 Air Conditioners
User Manual
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
| 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 | ||||
| Part Name | Part Number | Remarks | Symbol in Wiring Diagram | Models |
| LEAD WIRE ASSY CNH02 | U41 017 392 | Optional for connection to Thermostat Interface 2, PAC-US445CN*. (This part is included with PAC-US445CN*) | CNH02 | Optional use with all PAA Models |
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.
MITSUBISHI ELECTRIC UNITED STATES
