First, check the basics: confirm the unit is getting adequate airflow (clear space around condenser), verify the door gaskets are sealing properly, and make sure the condenser has been cleaned recently. If the Carel controller is showing an error code, refer to our Carel Controller Diagnostics guide. If issues persist, call us directly at
206-790-8142 — our team can walk you through diagnostics and, if needed, dispatch a service technician.