!
error Miller

Error Code [Un S] [Hort] / [Outp] [Ut]

Short on weld output connections must be removed before proceeding. A short circuit has been detected on the weld output.

? What Causes This

Weld output connections are shorted together or have an unintended electrical short.

How to Fix It

  1. Remove the short on weld output connections.
  2. Verify weld output connections are properly isolated.
  3. See Section 11-3 if display shows after weld output connections have been verified as not having a short.

Source: page 60 of the official manual

From the manual

Manual page 60 — Miller error [Un S] [Hort] / [Outp] [Ut]

This error code appears in:

Miller Dynasty 280