EMT and XC trains from Peterborough do. You haven't said what operator you were travelling with or what traction you were on.
I was told once on a EC service that the temperature and aircon is preset at the depot, and cannot be changed by the conductor or driver - not sure if this is the case or not.
I've been told the same on ATW, that the heating cannot be altered by anyone on board. I'm wondering if this is a stock reply, because if it became known that it could be changed, surely there would be people wanting the temperature higher and people wanting it lower (perhaps depending on how they were dressed!), and war would break out.
They would of reset the system, if the heating/air con is playing up, the guard tends to reset it and see if it works, not much else they can do...I was on an ATW 175 a few months ago and the air-con was clearly faulty (cannot recall now whether it was blasting cold air, or cooking us all!). Had a word with the Cionductor who prodded something on the ceiling with a sharp object and all was well!
A question for you guys...how do you get heaters turned off in a carriage if you are travelling as a passenger on a stinking hot day? How does one get the message to the driver to turn the heating off?
The only time Traincrew can open a window on a class 378 is when the air con has packed up, the passengers are complaining, control have said its ok and Bombardier have said its ok, then and only then can the traincrew can do something.
On the flipside of this i was working a train today where the passengers got lovely cold air con and the traincrew were left cooking as the thermostat in the cabs were not working so all the traincrew were getting was warm and very warm air! Suffice to say i spent most of my time inside the train to keep cool.
The easter 142's have a switch in the cab behind the driver that turns the heating off in that coach