Error Code 84c

The compressor is running too slowly or cannot turn

Also displayed as: 84c

What This Means

Compressor restricted for more than 5 seconds; Compressor running at lower than 1000RPM for over 5 seconds; R1 short circuit; Severe fluctuation of input voltage; Mechanical compressor blockage

First Thing to Check

Parts Involved

How to Fix

1. 1

   1. Check if compressor is mechanically restricted

2. 2

   2. Verify input AC voltage stability

3. 3

   3. Check R1 resistor for short circuit

4. 4

   4. Measure compressor RPM

5. 5

   5. Check refrigerant lines for blockage