settings is a standard part of HVAC maintenance, but finding the right can be tricky because it varies by manufacturer and access level. Common Default Passwords
steps for a particular task, such as changing setpoints or updating firmware? UNITED COOL AIR | CAREL PCO CONTROLLER PASSWORD carel pco5 controller password
| Scenario | Immediate Action | |----------|------------------| | | Try 1234 (Pr2) or 4321 (Pr3) | | Frozen supermarket rack / OEM chiller | Check OEM manual; try 1500, 3452, 4567 | | You have physical access and a laptop | Connect via USB-RS485 to pCOStudio – read application without password | | Nothing works & you have original application file | Perform JP4 reset, then reload the .bin or .pco file | | Customer changed it and forgot | No recovery except above methods – no "master override" | settings is a standard part of HVAC maintenance,
Connecting via a laptop using the Carel pCOManager software and a USB-to-RS485 converter can sometimes reveal or reset password settings. : Found in certain process chillers, such as
: Found in certain process chillers, such as those from Aermec . How to Enter the Password
: If the above don't work, common manufacturer sequences include , or specific codes like Web Interface (pCOWeb) Login If you are accessing the controller via a network using the pCOWeb card , use these credentials: How to Enter the Password button to open the main menu. arrows to scroll to the Technician menu and press When the flashing password prompt appears, use the keys to reach the code (e.g., 1234) and press to confirm. For further configuration details, refer to the official pCO5 instruction manual