Safety Circuit Breaks off

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This fault indicates that the critical safety circuit of the lift has been interrupted or opened while the lift was in service. This is a protective measure to immediately halt lift operation when a safety condition is violated.

• Activation of an emergency stop button in the car or on a landing.
• Opening of car door or landing door interlocks during travel.
• Activation of a safety limit switch, such as pit stop switch or overtravel limits.
• Physical break or poor connection in the safety circuit wiring.
• Malfunction of a safety component (e.g., safety relay, governor switch).

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1. 1

   Inspect all emergency stop buttons in the car and on all landings for activation.

2. 2

   Verify the closed state of all car door and landing door safety interlocks.

3. 3

   Check the position and state of all safety limit switches (e.g., pit switch, final limits).

4. 4

   Perform a continuity test on the entire safety circuit chain to identify any open points.

5. 5

   Examine the safety relays on the master control board for proper operation and contact closure.