Rotator control working - Rotator image (Dial) is Disabled - Help Please

[wa1gzy]

I am using the RC-1216H with the Green Heron RT-21 Digital Rotor Controller.  Remote control is working on PC and android cell at the URL by inserting degree heading or using on screen pre-set buttons to direct antenna N/NE/E/SE/S/SW/W/NW.  Only defect is that the dial indicator is disabled.  How do I enable the dial pointer?
Thanks in advance for your assistance.

[Jan (Microbit)]

It could be that the wiring is not ok. If the wire used to send serial data from the rotor to the RC-1216H is faulty then you would see such a behavior, i.e it is possible to control the rotor but there will be no degree indication available.