Dear Forum Members,

Yesterday i have tried this 20-30 minutes of "overclocking" - unfortunately no result. During test I have manually checked temperature of hot coolant supply tubes:



So supply tube was extremely hot as well as right (passenger) valve. However left (driver) valve was warm during entire 30 minute burn-out. Same for tubes connected to valves outlet which connected to heating radiators:



As you can see from above picture top tube (driver) was warm and bottom tube (passenger) was extremely hot. When I've stop heating and return temperature back to normal, bottom tube (passenger) cooled to warm condition. Next I 've disassembled HVAC unit and found nothing strange there:




I've even manage to increase contact between 2 circuit boards as it were described in "Climate Control Fan Speed Fix" .pdf file. Could you please let me know my next steps for problem solving?

Highly appreciate your support - thank you all

Regards,
Iskender