OTIS Elevator Fault Record Guide: How to View and Clear Fault Records with Blue TT

When troubleshooting an OTIS elevator, checking the stored fault and event records can provide useful information about previous operating conditions.

For common OTIS elevator systems, the blue TT service tool can be used to access event records, operating mode records, current faults and stored fault records. The menu path varies depending on the elevator control system.

OCSS

For OTEC-2000, 300VF and 3200 systems, the supplied instructions list the following menu paths:

• · M-1-2-2-1: Event Record
• · M-1-2-2-2: Operating Mode Record

To clear a single fault, display the corresponding fault record and press SHIFT + ENTER.

To clear all fault records, press SHIFT + 5, then follow the on-screen confirmation procedure.

LMCSS

For the LMCSS system:

• · M-2-2-2: Event Record

The supplied material specifies that the fault-clearing method is the same as the OCSS system.

OVF30

For the OVF30 system, the service tool provides separate menu paths for current faults, stored faults and clearing records:

• · M-4-2-1: View Current Fault
• · M-4-2-2: View Stored Fault
• · M-4-2-3: Clear Fault Record

LCBII

For 3100 and OTIS2000 systems using LCBII:

• · M-1-2-1: View Event Record

To clear the fault records, press SHIFT + 5 and follow the displayed confirmation procedure.

OVF20

For the OVF20 system, the supplied instructions provide two event-record viewing paths:

• · M-2-2-1: View all event records from the latest power-on period
• · M-2-2-2: View uncleared fault records from before the latest power-on

To clear the fault records, press SHIFT + 5 and follow the on-screen confirmation procedure.

OTIS Fault Record Menu Overview

The menu paths above are taken directly from the supplied reference material.

Why Fault Record Access Matters

Fault records can help maintenance personnel understand what has occurred during elevator operation and identify the appropriate record for further troubleshooting.

The exact menu path depends on the control system. Therefore, when using an blue TT service tool, the first step is to identify the applicable elevator system before accessing or clearing the records.

Note: This article is based on the supplied service information. It does not replace the applicable OTIS service manual or qualified elevator maintenance procedures.

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