Re-Leveling Won't Operate; Red3 Led Is Not Blinking; Processor Errors/Lockup - ECD 100-181 Manual

1. Ensure SIS unit is mounted firmly.
2. Some magnets may have dead spots. Change faulty magnets.
3. Ensure software is latest Version.
4. On terminal floors – ensure that MSU/MSD initiates slowing before TSL/BSL respectively.

Re-leveling won't operate

Check RLV setting.

Red3 LED is not blinking

The microprocessor has locked up (possibility caused by electrical noise interference, power failure). Reset via a processor
power on reset (POR);
Under normal operation;
• The red Red3 LED blinks to confirm that the microprocessor is running.
• The yellow Yel3 LED comes on to confirm outputs are enabled.
• The green Grn3 LED comes on during power up and turns off during normal operation. It will
When re-powering; ensure the lift is off for 10 seconds before turning back on.
On power up, a delay of approximately 2 seconds is given on start up to ensure voltages are stable prior to reading
and writing outputs.

Processor errors/Lockup:

Ensure 0V and 10V AC supply present at board terminal
Try new microprocessor IC.
35V 470uF capacitor damaged.
Crystal damaged.
Lockup may be due to spike/noise. All relays, valves, brakes, door motors etc must be suppressed with an
appropriate filter or surge absorber unit to prevent voltage spikes and back emf/noise.
• Turn the power supply off
• Wait for 10s
• Turn the power supply back on
• Observe LEDs status.
also flash once when a new value has been written in to EEPROM..