Danfoss FC-302 Error Code 31

Danfoss PLC & VFD Major Overtemperature

Model: FC-302 | Code: 31

Applicable Systems
FC-30 FC-51 FC-101 FC-202 FC-302

Symptoms

Motor overtemperature detected.

Possible Causes

  • Motor overload
  • Motor cooling insufficient
  • Motor ambient too hot

Troubleshooting Steps

  1. Step 1: Check motor load current
    Current within rated range
  2. Step 2: Verify motor cooling
    Cooling adequate
  3. Step 3: Reduce motor ambient temperature
    Temperature within rated range

How to Reset

Reset via control panel after motor cools.

Source: Danfoss VLT FC-302 Operating Guide, Danfoss A/S

Category: PLC & VFD