Mitsubishi Mitsubishi Elevator Error Code 33

Mitsubishi Elevator Major Memory

Model: Mitsubishi Elevator | Code: 33

Applicable Systems
Mitsubishi Elevator

Symptoms

Memory fault. The controller memory has a fault. Data may be corrupted.

Possible Causes

  • Memory module hardware failure
  • Memory data corrupted by battery depletion
  • Memory write cycle limit exceeded
  • Memory module connector loose
  • EMI causing memory data corruption

Troubleshooting Steps

  1. Step 1: Check the equipment status and fault indicators to confirm the active fault code
    Fault indicator or HMI displays code 33 as active
  2. Step 2: Verify all electrical connections, wiring harnesses, and connector seating
    All connections secure, no corrosion, loose pins, or damaged wires
  3. Step 3: Check the battery voltage with a multimeter at the battery holder or terminal
    Battery voltage above the minimum threshold (typically 2.7V for 3V lithium)
  4. Step 4: If battery is depleted, replace it with the manufacturer-specified battery type
    New battery installed, voltage measures nominal value
  5. Step 5: Reload the configuration or program from a known-good backup
    Configuration loads successfully and equipment enters normal state
  6. Step 6: Verify all parameters and settings are correct after reload
    All parameters match the backup or factory defaults

How to Reset

To reset: 1) Identify and fix the root cause described in the fault symptoms. 2) Press RESET on the HMI or controller, or power-cycle the equipment. 3) If the fault recurs, contact manufacturer service. Caution: Document the fault code and context before resetting.

Frequently Asked Questions

  • Q: What does fault code 33 mean on the Mitsubishi Mitsubishi Elevator?

    Fault 33 on the Mitsubishi Mitsubishi Elevator indicates: Memory fault. The controller memory has a fault. Data may be corrupted. Refer to the equipment manual and manufacturer support for specific troubleshooting steps.

  • Q: Can I continue operating the equipment with fault 33 active?

    No. The equipment has detected a fault condition and has taken protective action (typically stopping or derating). Continuing to operate without fixing the root cause may cause further damage. Always investigate and fix the fault before resuming operation.

Related Mitsubishi Fault Codes

Source: Mitsubishi Elevator Controller F-Board Diagnostic Manual, Mitsubishi Electric Documentation

Category: Elevator