Low-profile ducted systems code list
Family-scoped air-conditioner codes with the shortest useful meaning line for quick triage.
P1
The indoor unit intake sensor is reporting an error.
Shown as check code P1 on the wired remote controller. On supported self-check patterns, the wireless remote table maps one beep/flash count to P1.
E6/E7
The indoor and outdoor units are not communicating properly.
Shown as check code E6 or E7 on the wired remote controller. On supported self-check patterns, three beeps/flashes map to E6/E7.
P4
The drain sensor is reporting a fault.
Shown as check code P4 on the wired remote controller. On supported self-check patterns, four beeps/flashes map to P4.
P5
The condensate drain pump has a fault.
Shown as check code P5 on the wired remote controller. On supported self-check patterns, five beeps/flashes map to P5.
P6
The unit has entered freezing or overheating safeguard operation.
Shown as check code P6 on the wired remote controller. On supported self-check patterns, six beeps/flashes map to P6.