I bought a second hand Peugeot 206cc diesel in July and first noticed signs of aired heat coming through the heater in the mornings. I took it back to the dealers and cutting a long story he changed the thermostat cleaned the thermocoupling (this is what the Dealers had told him that this could be the problem). Last week I set the digital readout to 23 and have not adjusted it the level of heat is quite good. Do you think I need a New Digital climate Control Unit also when I put the A/C and set it to cold it will only come on warm?