Danfoss FC-302 Error Code 37

Danfoss PLC & VFD Major System

Model: FC-302 | Code: 37

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

Symptoms

Watchdog timer fault detected.

Possible Causes

  • Firmware watchdog timeout
  • CPU processing overload
  • Severe EMI disturbance

Troubleshooting Steps

  1. Step 1: Power cycle the drive
    Fault may clear if transient
  2. Step 2: Check for EMI sources
    No interference sources
  3. Step 3: Update firmware if available
    Firmware up to date

How to Reset

Reset via control panel or power cycle.

Related Danfoss Fault Codes

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

Category: PLC & VFD