ManualVerified 2026 edition
MXZ-SM72 / 96 / 120TL service manual & wiring — April 2026
R-454B outdoor models MXZ-SM72TL-U1, MXZ-SM96TL-U1 and MXZ-SM120TL-U1. Revised Edition A supersedes OCH872, which the manufacturer marks void.
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Document applicability
- Publisher
- Mitsubishi Electric
- Indexed models
- MXZ-SM72TL-U1, MXZ-SM96TL-U1, MXZ-SM120TL-U1
- Edition
- OCH872A · Revised Edition A · April 2026
- Format
- PDF · 198 pages
- Region
- United States; confirm local applicability
- Access
- Public manufacturer asset
- Index review
- 2026-09-29; confirm the publisher’s current revision before use
- Source
- metuspublicassets.s3.us-east-2.amazonaws.com
Jump to a useful section
Printed manual page numbers. Confirm the model scope above before applying a test or diagram.
Cross-check the diagnosis
These original learning guides explain possible causes and lookalikes. The publisher’s exact-model procedure controls on live equipment.
Build your call worksheet →Before applying this reference
- Match full equipment and controller models, refrigerant, region and document revision.
- Use the unit wiring label and OEM specifications. A related brand name or similar cabinet does not prove compatibility.
- Isolate power, secure against restart and prove it absent before resistance tests or repairs. Follow approved capacitor and inverter discharge procedures.
- Preserve safety interlocks and refrigerant mitigation. Stop on unsafe conditions or suspected leakage.