Phase loss or voltage low (SS-PWFH)

Mitsubishi Elevator High Elevator

Model: P1/F-board | Code: E53

Applicable Systems
Mitsubishi Elevator

Symptoms

Phase loss or voltage too low detected

Possible Causes

  • Input phase loss
  • voltage drop below threshold
  • power supply issue
  • main contactor fault

Troubleshooting Steps

  1. Step 1: Check three-phase input voltage
    Verify the fault is resolved after completing this step.
  2. Step 2: verify phase balance
    Verify the fault is resolved after completing this step.
  3. Step 3: inspect main contactor
    Verify the fault is resolved after completing this step.
  4. Step 4: check power supply
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle after power restoration

Related Mitsubishi Fault Codes

Source: baike.baidu.com; baijiahao (三菱故障代码); diantijob.com

Category: Elevator