LiftMaster TDC Installation Manual - English French Spanish - Page 52

Troubleshooting (continued) Code Display Message Description Possible Causes Diagnosis Resolution F19 F19 System ID is not System ID SYSTEM ID configured in the is unset system. System (service board ID is needed by replacement) the powerhead main board to correctly run the operator. (service kit boards only) F19 error Configure system ID in the menu by using the LCD wall control. Ensure system ID is chosen properly. Operator may not function properly if the chosen system ID does not match the operator. F23 F23 Motor drive Door imbalance Inspect door for imbalance Repair or correct OVERTEMP circuitry or excessive or excessive resistance conditions resulting temperature is resistance in excessive door too high. Message imbalance/resistance is displayed until the circuitry cools Poor airflow/ down. cooling Check area around operator Correct any airflow for adequate ventillation restrictions around or space on the sides, above, inside the operator to and below the operator. improve cooling of the electronics. Check the electronics enclosure for dust or other debris near or behind the PCBA that restricts airflow or cooling. Ambient temperature too hot Measure ambient temperature near the powerhead when the overheating is occurring. Check against the temperature range specification for the product. Product must be used within the specified operating temperature range or risk of damage to the operator is possible. Excessive gear reducer or motor drag Check that the motor Correct any issues and gearbox rotate freely found, or replace and smoothly when any faulty or worn disconnected from the door components producing excessive drag Faulty powerhead main board If OVERTEMP fault never clears, even when the electronics have cooled, the main board may be faulty. Replace main board. Faulty motor If motor is getting drawing excessive excessively hot or does current not spin smoothly when powered, there could be an issue with the motor Replace motor 52