Carel Pco5 Controller Password Access

While 1234 is common, customized applications provided by OEM (Original Equipment Manufacturer) companies (e.g., York, Trane, Carrier using Carel boards) may change this default to a unique code.

Calibrating sensors, modifying differential settings, testing manual inputs/outputs (I/O), and reviewing historical alarm logs. Standard Factory Defaults: 1234 , 2345 , or 5555 . 🏗️ Manufacturer/Manufacturer Factory Level (Tier 3)

Press the Prg button from the main status screen to open the main menu loop. carel pco5 controller password

Locate the small (or look for a specific jumper terminal marked "Init") usually found near the pLAN network port or smart key slot on the side of the housing.

For any facility or system utilizing a Carel pCO5 controller, it is a fundamental task of the startup and commissioning process to change the default passwords as a primary security measure. If you are locked out, a standard universal bypass code is unavailable, and the road to recovery goes through the OEM, the original programmer, or a careful factory reset. While 1234 is common, customized applications provided by

When you see the prompt PASS or PS on the screen, the controller is asking for the code corresponding to the security level required to change the parameter you have selected.

Mastering the CAREL pCO5 Controller: A Guide to Password Management and Access If you are locked out, a standard universal

If the standard codes fail, use this systematic approach to regain access to your controller menus: Step 1: Locate the OEM Electrical Diagram and Manual

For certain OEM applications like Titan Air, the operator password is pCOWeb Interface:

Doing this will completely wipe the controller's application memory. The pCO5 will revert to a blank state with no knowledge of how to run your specific HVAC machine.