Nissan ad 2007 Heater not working properly

[ahmed.s.malik.14]

I have nissan ad 2007 when i connect the heater pipe its working good in winter but when in summer i turn on ac and both heater and ac heat coming.
I dont want to disconnect heater every time i need to use ac please let me know what to do is there any kind of device that turns off heater when switch to ac please let me know winter is just about to start.

Thanks in Advance

[askai37]

as ur isolation in HVAC box is gone so u have to diassenmble dashboard to repair that simple solution is to cut incoming heater pipe (Pipe coming from thermostat side) and connect desi tap . so u can turn on in winter and turn off in summer.

caution: use quality coolant as local or water will choke ur radiator core of heater as coolant flow stop in summer.

[ahmed.s.malik.14]

thanks alot man
sorry for late reply