No heat only AC works

Hi,

On this vehicle, the blend air door is actuated by a cable. It may or may not simply need adjusted. Here are directions for adjustment.
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2012 Nissan-Datsun Versa Sedan L4-1.6L (HR16DE)
Adjustment
Vehicle Heating and Air Conditioning Air Door Service and Repair Removal and Replacement Manual Air Conditioning Air Mix Door Cable Adjustment
ADJUSTMENT
DOOR CABLE

AIR MIX DOOR CABLE : Adjustment

1. Remove cluster lid "C". See: Dashboard / Instrument Panel > Removal and Replacement > Removal And Installation.
2. Remove instrument panel finisher "B". See: Dashboard / Instrument Panel > Removal and Replacement > Removal And Installation.
3. Remove glove box. See: Glove Compartment > Removal and Replacement > Removal And Installation.

Pic 1

4. Disconnect air mix door cable (1) from clamp (A).
5. Set temperature control dial to full cold position.
6. Push air mix door link (2) in the direction as shown, and then carefully pulling outer cable to A/C control side, and connect clamp.
7. Operate temperature control dial to insure that inner cable moves smoothly.

CAUTION:
When clamping the outer cable, never move the inner cable.

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If it needs replaced, let me know. If you can't get it repaired at this time, you should be able to move the air temp door by hand to get heat. However, you will need to reverse it to stop the heat.

Let me know if you have other questions.

Take care,
Joe