Inconsistent air temperature out of the vents

[DevalDragon]

I had the A/C condenser replaced back in January and everything seemed fine. However, in the past month or so, the air temperature is inconsistent. For the first 2 years I owned this car, I left it between 20 and 22 and left it alone. Now I'm constantly having to fiddle with the dial to get comfortable. Sometimes I have to set it all the way down to "LO" to get it to cool down enough to be comfortable. And when I set it to "LO" it can take 2 or 3 minutes before it starts blowing really cold air.

I have a dashmat (https://www.amazon.co.uk/dp/B0CWV9SMNB) on the dashboard and I removed it to see if that changed anything - it did - without the dashmat, I set the base temperature was 22 instead of 20 but the fluctuation did not improve. I have noticed the temperature is more stable on cloudy days than when it is sunny.

I cleaned the sensor on the dash and used compressed air to clean the sensor next to the steering wheel. I also ran the Honda self test ( https://www.hondafitjazz.com/manual/a00/html/s0/saa5es0k71100000000bbat00.html ) and it ran with no issues (was flashing "NO" at the end.

Is there anything else I can do? Or anything else I should know before taking it back to the dealer?

[ahavoja]

Check that Econ mode is off, because if it is on, it would make the air conditioning less effective.

Also check that the air outlet vents in front of you are pointing the same direction they were pointing before. I have noticed that if the vent is blowing cool air directly at me, I start to feel even colder.

The temperature fluctuations on sunny days could be explained by the sunlight sensor on the dashboard. When sun shines onto it, the climate control system tries to compensate by blowing colder air. And when you drive into shade, the opposite happens.

[MikeRO]

My Jazz Crosstar was parked up for about a week in a spot with direct, intense sunlight during the hottest parts of the day. Since picking it up, the air conditioning has completely stopped blowing cold air. Even when I set the climate control all the way down to "LO", it just blows warm/room temperature air.

Has anyone else experienced this?

[sebastiand]

Here I noticed that at 24 or 25C (set on auto) it likes to max the fan at least during the day when it is hot/sunny. So if I want it to go quieter. I need to put 26C or more. But then in the morning or evening it runs the heating at that temp so I need to go back to 24.



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[Downsizer]

I’ve noticed that in this hot spell, the system on auto stays in recirculate mode, which makes sense. How does the car then get any fresh air into the cabin? I don’t want to use up all the oxygen!

[Nicksey]

I only ever use the AC in 'Lo' mode. I have never given it a set temp. If it is too hot, I bung it into 'auto' and the whole system goes full on cold mode. I understand the recirculate coming on, which means the system isn't having to work hard drawing in and cooling hot air and only dealing with the cabin air.
Once I am comfortable, I turn down the fan dial which negates the auto, and set the dial to about 3 bars. All still in 'Lo' mode. I find hovering around the 2 or 3 bar fan setting is just right.
Why would you need to set a temp, when ultimately in this weather you want to be cool?

[Downsizer]

Once I am comfortable, I turn down the fan dial which negates the auto, and set the dial to about 3 bars. All still in 'Lo' mode. I find hovering around the 2 or 3 bar fan setting is just right.
Why would you need to set a temp, when ultimately in this weather you want to be cool?

I set the temp so that when the auto system has brought the temperature down to the set level, recirculation switches off and the fan speed drops automatically. The problem last week was that the external temperature was higher than the auto system could handle, meaning that it stayed on recirculate and the set temperature was never achieved.

[Lord Voltermore]

The mk 4 Jazz is my first car with 'climate control'. Previous cars had manual air conditioning where it was normal to constantly fiddle with heating and air conditioning controls to regulate a comfortable environment to personal taste.

Most of the time setting a temperature and letting the climate control' do its stuff' works  well.Auto  climate control is a big improvment over manual air con. 

But sometimes  I do  fiddle manually ,boosting fans etc , trying to speed things up. This often works well, with rapid defrosting, or quickly making a very hot car tolerable. But to be honest I am not sure I have yet fully mastered all the controls  (Mrs LV is better at working entertainment and comfort controls    ) 

I think my climate control works well, but maybe I have been complacent ,accepting less than optimum performance  after years of controlling things manually. 

[Bristol_Crosstar]

My Jazz Crosstar was parked up for about a week in a spot with direct, intense sunlight during the hottest parts of the day. Since picking it up, the air conditioning has completely stopped blowing cold air. Even when I set the climate control all the way down to "LO", it just blows warm/room temperature air.

Has anyone else experienced this?

I had this happen on an earlier car, the A/C needs to be re-gassed every few years. I would have your dealership look at it. Alternatively it could be the known Mk4 problem with the condenser which can be replaced under warranty (I had this happen on my 2020 Crosstar).

[Bristol_Crosstar]

Once I am comfortable, I turn down the fan dial which negates the auto, and set the dial to about 3 bars. All still in 'Lo' mode. I find hovering around the 2 or 3 bar fan setting is just right.
Why would you need to set a temp, when ultimately in this weather you want to be cool?

I set the temp so that when the auto system has brought the temperature down to the set level, recirculation switches off and the fan speed drops automatically. The problem last week was that the external temperature was higher than the auto system could handle, meaning that it stayed on recirculate and the set temperature was never achieved.

This can happen when the weather is extremely hot, I usually raise the target temperature to one that the climate system can achieve then the recirculate is switched off under Auto.

[Kremmen]

As I've posted before, Honda AC isn't the best, coldest. Cannot cope under direct sun like on motorways

My Xantias, you had to make sure the face level vents were not pointed at your face or you would get 'brain freeze' it was so cold, similar on my IS200

[Nicksey]

As I've posted before, Honda AC isn't the best, coldest. Cannot cope under direct sun like on motorways

My Xantias, you had to make sure the face level vents were not pointed at your face or you would get 'brain freeze' it was so cold, similar on my IS200

My Renaults were like this. If you were the driver, it was almost painful how cold the hands/wrists became on the wheel