What It Means
- CBX40UHV: Stage heat pump (shows active heat pump stages) h1 or h2
- CBK48MVT: Variable Capacity Heat (1 second ON, 0.5 second OFF) / % of input rate displayed / Pause/ cfm setting / Pause/ Repeat codes. Example: or h1 or h2

Split & Multi-Split
h means different things on different Split & Multi-Split models. Enter your model number to see only your reading, or find your model below.
Models: CBX40UHV
Air handler (indoor)
This manual entry does not list further causes or actions.
Stage heat pump (shows active heat pump stages) h1 or h2
Models: CBK48MVT
This manual entry does not list further causes or actions.
Variable Capacity Heat (1 second ON, 0.5 second OFF) / % of input rate displayed / Pause/ cfm setting / Pause/ Re- peat codes. Example: or h1 or h2
Continue in ACLogics with guided diagnosis for your equipment and symptoms.