Hi iv got a vx 01. The ac works perfect but when i switch it over to heating Its stays on cold any help. Pls help its freezing at 4am
Heater tap opening? Have a look at the heater tap, Then start the car and trun it to heat, See if the heater tap opens. Other than that, Could be thermostat related
Also check the vacuum hose from the heater tap,if it's at all perished,it may have fallen off or may be split.