Current sensor error

What does UH mean?

Abnormal if the current sensor detects -1.0 A to 1.0 A during compressor operation. This error indicates a potential issue with the current sensor circuit itself or the compressor's wiring. If left unaddressed, it can lead to improper compressor control, reduced efficiency, or even damage due to lack of accurate current feedback.

Complete Troubleshooting Guide

1. 1

   Verify that the U·V·W phase wiring to the compressor is correctly connected and secure. Refer to Section 10-9 for wiring diagrams.

2. 2

   If wiring is correct, inspect the current sensor for physical damage or loose connections on the outdoor power circuit board.

3. 3

   Replace the outdoor power circuit board if the current sensor circuit is suspected to be defective.