The blue/green/red display at the base of the display reflects the heat status of the diesel heater. I don't know the precise designations but, basically, one blue says it's starting and the glow plug is on; two blues say the the glow plug is getting hot; one green says combustion has started; two greens say combustion is doing well; the red says it's working properly - or something like that :)
The bars at the top of the display say the WiFi is working.
The funny symbol at bottom left says the pump is operating.
__________________
"I beseech you in the bowels of Christ think it possible you may be mistaken"
Oliver Cromwell, 3rd August 1650 - in a letter to the General Assembly of the Kirk of Scotland
Continuing on from Mike the colour graph in the middle displays the increase in the set temp. The top one shows that it is receptive to the remote control. Just spent five weeks over east coast and Victoria and very happy we had one.