Password | Carel Pco5 Controller

The uses different passwords depending on the access level required (e.g., User, Service, or Manufacturer) and the specific manufacturer using the hardware. Because the pCO5 is a programmable controller, original equipment manufacturers (OEMs) often set their own unique codes for HVAC units. Common Default Passwords

: Use the UP and DOWN arrows to scroll to the correct number (e.g., 1234 ). Confirm : Press ENTER again to gain access. Changing or Resetting the Password carel pco5 controller password

Always verify with your specific unit manufacturer (OEM) if these defaults do not work, as they often customize the firmware and access codes for their specific equipment (e.g., chillers or heat pumps). using a USB drive on the pCO5? UNITED COOL AIR | CAREL PCO CONTROLLER PASSWORD The uses different passwords depending on the access

: A hard-coded Carel master password that typically cannot be modified by the user. Confirm : Press ENTER again to gain access

A well-meaning service tech might have changed the password to prevent unauthorized access and then left the site without documenting it. Your only recourse here is a hard reset (see below).

The most standard default password for CAREL pCO series controllers to access technician or factory settings is Operator Level: For basic setpoint adjustments, some systems use as the operator-level password. Manufacturer Specific:

Some older firmware versions or specific OEM customizations use 1234 or 4321 as a fallback. Furthermore, if the controller is a PCO5 Medium or Large variant, the default for Level 3 is almost always 3333 .