Temperature from heater fluctuates

[Padaung]

Hi all,

This winter my wife and I have both noted that the temperature from the heater in our car is fluctuating from very warm to suddenly cold, and then back to very warm. This is happening when we have not touched the heating controls (temp or fan).

My car is a '21 plate MG5 SR

In addition, the times we have turned the heat down when it has been very hot, the temperature has not altered, and vice versa when too cold.
Has anyone else had this, and if so did you find a solution?

 

[KMC]

Hi all,

This winter my wife and I have both noted that the temperature from the heater in our car is fluctuating from very warm to suddenly cold, and then back to very warm. This is happening when we have not touched the heating controls (temp or fan).

My car is a '21 plate MG5 SR

In addition, the times we have turned the heat down when it has been very hot, the temperature has not altered, and vice versa when too cold.
Has anyone else had this, and if so did you find a solution?

Hi Ive noticed the same in my Dec 23 x power MG4 ! I thought it must be regulated to keep the cabin at the given temperature? Sometimes I realise cold air is blowing at my legs. Tapping the symbol to re circulate air instead of allowing cold air to flow in seemed to fix it. Also mine has vent flaps below the front number plate that open to cool the battery but i was only on a short journey so doubt its that. Try selecting recirculating on the heating screen its a car symbol with an airflow arrow. It works for me ?

 

[securespark]

Not trying to bump, but wanted to comment on an existing thread rather than start a fresh one.

I've been noticing a lot that our heating fluctuates in temperature. I used to think Mrs S was turning it down on the sly, but that's not the case.

Had a journey this morning at 22 all the way and it started toasty warm and ended up cold.

Mad!

 

[crispyjay]

I agree. My FL5 can blow hot air and 1 degree lower it blows cold air. Seems very binary at times.

 

[MickeySw]

I agree. My FL5 can blow hot air and 1 degree lower it blows cold air. Seems very binary at times.

As with everything strange, intermittent and unexplained a HW reset (12V disconnect) is usually the first step?

 

[emmrecs]

Seems very binary at times.

I agree! It seems that the thermostat is set to "exact sensitivity" (if such a term exists!) i.e., the point at which it turns off the heater is immediate once the set temperature is reached.

As with everything strange, intermittent and unexplained a HW reset (12V disconnect) is usually the first step?

In this specific situation I don't think what is being experienced is either strange, intermittent or unexplained, simply (in the oft-quoted words of MG Customer Service) "as designed" or "as intended".