climate control problem: no heat

[carl3pedals]

I went for a several hour long drive today in my 2023 Integra Aspec with 6 speed stick. I was about 30 minutes into the drive when I realized I was not getting any heat. The air blowers are working fine, whether set to defrost the front windshield, or set to direct air at both chest-level and feet-level, or set to only send air to my feet. And each of the two legs of my trip today were over 3 hours of highway driving, and the engine was working fine, so I am sure the eingine was producing enough heat.

Can anyone suggest anything I should look at to troubleshoot this?

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[BillB128]

Seems odd since the blower is working and you're able direct the airflow. Perhaps it's s sensor that is preventing coolant flow through the heat exchanger. Thankfully it's a warranty repair, especially since it's not cracking 20 deg F in NJ today.

You probably tried it over the course of the trip, but did try cycling the ignition on and off to see if that made a difference?

 

[carl3pedals]

Seems odd since the blower is working and you're able direct the airflow. Perhaps it's s sensor that is preventing coolant flow through the heat exchanger. Thankfully it's a warranty repair, especially since it's not cracking 20 deg F in NJ today.

You probably tried it over the course of the trip, but did try cycling the ignition on and off to see if that made a difference?

Yes - I actually had 3 legs to the trip yesterday - 1st and 3rd legs were each over 3 hours. And the problem is still there this morning, for two short trips today.

 

[BillB128]

Sure seems like something is keeping coolant from traveling through the heat exchanger.
Hopefully it's an easy fix once you get it to the dealer.

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