{"product_id":"carrier-control-board-caecomzr003b00","title":"OEM Carrier Control Board for Mini Split Model CAECOMZR003B00 Unit","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board for Mini Split Model CAECOMZR003B00 Unit\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier control board is the factory circuit board that controls operation, communication, and safety logic on the Carrier CAECOMZR003B00 unit. When the system won't start, displays error codes, loses thermostat communication, or relays fail to switch, a defective control board is typically to blame. This direct-fit replacement matches the original board's firmware, connector layout, relay arrangement, and mounting profile so your equipment sequences and self-diagnoses exactly as engineered. Installation is a moderate task suited to experienced DIYers and technicians: disconnect power at the breaker, take clear photos of all wiring, transfer each harness plug to its matching port, and mount the board on its standoffs. Most installs run 30-45 minutes. Confirm power is fully off and discharge static before handling the board. Genuine Carrier electronics provide the correct voltage tolerance and component protection that aftermarket boards can't guarantee. In stock and ships same-day on orders placed before 3PM CST. Bring your CAECOMZR003B00 back online quickly and safely with the right part.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model CAECOMZR003B00.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62963303416179,"sku":"carrier-control-board-caecomzr003b00","price":199.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-caecomzr003b00","provider":"National HVAC Parts","version":"1.0","type":"link"}