Hi my 2015 Octavia elegance heater does not get warm at all . All cooling system works perfect I've replaced matrix , thermostat, both water pumps and had system bled by Skoda all is perfect apart from the Interior heater is always cold ! Air con is not stuck on and flaps have been reset , any ideas ?

System bled, so presumably not an airlock in the matrix?

 

Do the flow and return pipes to the matrix get warm?

 

Coolant check valve? (caused the untimely turbo failure on my vRS - first symptom was no heat in the cabin).

 

Gaz

Hi Gaz , yes both pipes warm from matrix it has been into Skoda Twice for  bleeding and to check for airlocks , what is a check valve please ? 

Coolant check valve is a (IIRC) £500 unit that controls coolant flow for initial warm up.  It can shut a cooling circuit that includes the matrix and (unfortunately for me) the turbo.  My hoses were stone cold, but the valve was reporting itself to be open, when it was not.  If the coolant pipes to your matrix are warmed, then I'd suggest the CCV is probably operating normally.

 

If you've heat getting to the matrix, but no heat coming into the cabin, it'd seem to suggest an airflow management problem.  Has it been scanned for further faults?  I'm now wondering if something's either not connected, or seized, stopping airflow from, or to, the matrix itself.

 

Gaz

 

Looks like another trip to Skoda and Check airflow management could just be a sensor down fingers crossed . Many thanks Andy