Rep Power: 0

So when it comes to electrical im having some issues.
1. My steering wheel buttons are completely in darkness, as far as i know from my previous Accord CU2 and CL 7, the buttons were poorly lit.. but there was some light.
2. If im setting my interior lights to maximim from that little rotating switch, my climatronic backlight goes almost completely dark - only the screen and the green light from dual zone or the reciculation are showing some life. I have to turn a few levels down for them to light up, and even when they do light up, the intensity is a bit lower than the rest of the dash.

After a scan, i get this error: B121D Hum-TEMP Sensor Communication Error. Sometimes when im driving, on the 2 center vents there is some steam/humidity blowing ( has no smell ) and sometimes the AC is just not cold enogh - like an Eco mode ( its cold, but not cold enough ) and sometimes its just too cold even if the temperature is the same. If i set it up to blow face-feet, on the feet vents it blows with more power than the central vents.

Just bought the car, but from what i could discover at some point some water got in it due to some hail damage - so most probably it rained inside of the car. I ve been trying to find some info if thos could be a faulty climatronic panel or the main Climate Control Unit. Any help most welcomed. Many thanks in advance.
Engine is 1.6 i-dtec if that matters at all.