Heater Matrix/Aircon

[Kenhayes247]

Hello all,

My wife and I have a 2013 Peugeot 207cc 1.6 VTI. I am in the process of changing the cars thermostat and about to start the re-assembly.

I have 2 questions please:

There are two hoses that come from the thermostat to the heater matrix. The moulded arrow on the thermostat i presume points to the direction of flow. To which connection on the heater matrix should this be connected, the top or bottom one, or does it not matter? When i initially removed it, it was connected to the bottom, but just did not seem right.

Also, when the A/C is switched on and turned to full cooling, should hot coolant still circulate through the heater matrix? We have an operting a/c system that never really gets cold. Fully gassed, compressor and fan run as normal, but not cold.

All advice great received. If it hels the car is fitted with dual zone climate control

[xantia_v6]

I don't have an official answer for the flow direction, but I would expect flow to be generally bottom to top in the matrix, to make it self -bleeding.

The water flow to the matrix is continuous, temperature is controlled by air flaps which bypass the matrix for cooling. You may have a problem with the flaps, or maybe the refrigeration system is not working correctly.

[freddyokel]

Also, don't forget that the car has an electric heater in the air flow path which will mask lack of correct bleeding as the climate control will use it if the liquid system isn't providing enough heat.

[Kenhayes247]

Thank you both for the replies. I will start the reassenmbly and see how it goes from there.