How to Bypass Photocells on Chain

How to Bypass Photocells on Chain

⚠️ Warning: Bypassing photocells removes safety detection — the Chain will operate without obstacle detection. This should only be done for testing/diagnostic purposes or if photocells are not installed.

Method 1: Hardware Bypass (Jumper) If photocells are not installed or you need to bypass them:
1. Connect with jumper cable connections 5 and 9 on older type of electronic board
2. Connect with jumper cable connections 6 and 10 on new type of electronic board

If client is not sure which type of electronic board is in Chain, support team must be contacted.

Method 2: Disable Photocell Test Function If the photocell test is causing issues (blocking operation on startup), you can disable it:
1. Raise the chain to its UP position (fully closed)
2. Press and hold the RED button
3. After 4–5 seconds, the LED executes 8 flashes (entering learning mode)
4. Keep holding — count the flash sequences
5. At 2 flashes (2nd function = Photocell Test), release the RED button
6. LED shows current status: slow flash = enabled, fast flash = disabled
7. Press the BLUE button to deactivate the photocell test
8. To exit: move selector Sw1 to manual, wait 1–2 sec, then back to automatic

⚠️ Note Safety Without photocells, the Chain has no obstacle detection — use caution! Temporary only re-enable photocells once the issue is resolved.
Calibration - After any changes, ensure photocells are clear of obstructions and run a calibration if needed.

    • Related Articles

    • Chain stops halfway on automatic mode

      If the chain doesn’t go all the way up or down as it should when controlling the App, the problem is probably in switches inside the chain. Switches must be inspected and returned to their own position. There are two switches behind inner chain in ...

    • Chain is not rising or barely rising

      A possible solution for this problem is to first increase the torque on the motor and do the calibration process after that. Note: If the torque screw is set to maximum then the potentiometer will got minimum and the torque will be lowered instead of ...

    • How to install Chain Column

      Instructions for installing Chain column: 1. Screw in for 1,5 - 2,0 cm the 4 screws M10x70 in dotation to the base. 2. Place the base on the previously prepared base of cement (Fig.3) 3. The upper part of the base should be clean and perfectly ...

    • Chain Installation Guide: Power Supply, Master/Slave Setup & Photocells

      Before installing the Chain unit itself, it is necessary to complete the power supply installation and connect the master and slave units according to the instructions provided in the user manual. Proper preparation ensures smooth operation and ...

    • How to Calibrate the Chain?

      (Note: Parklio™ Chains come pre-calibrated from the factory. Calibration is only required if the chain length has been changed or adjusted. In some cases due to transport and installation Chain is required to be calibrated) ? Important: Ensure there ...