heater control fault rover 45 (54 plate)?

after working perfectly well, my heater/ climate control, blower, temperature,directional flow indicators suddenly stopped working and gave a constant readout of (E6 a little man sat in his seat,) and thats all. i then changed the pollen filter and now everything works except the heater.when I try to regulate the temperature I get a read out of the temperature, say, 20 degrees and a sign saying E9 service these two readouts are constantly interchanging. whats up please.