Insteon KeypadLink Dimmer 6-Button

Add-ons Bindings
1

ERROR o.o.b.i.InsteonPLMActiveBinding[:502]- item Great_Room_Fan references unknown feature: dimmer, item disabled!

Items:
Dimmer Great_Room_Fan "Great Room Fan" <fan> (Great_Room, Fan) {insteonplm="28.A5.DD:F00.00.15#dimmer"}

2

Keypads use the feature loaddimmer instead dimmer. See Insteon PLM Binding · openhab/openhab1-addons Wiki · GitHub. It should be:

Dimmer Great_Room_Fan “Great Room Fan” (Great_Room, Fan) {insteonplm=“28.A5.DD:F00.00.15#loaddimmer”}