Case puma aircon

[Kevin Cosgrave]

Hi, having problems with my aircon blowing hot air, have been topped up with gas, replaced the sensor under the seat, replaced the thermostat under the seat, cold air blowing out from the cooler but warm air coming through the vents in the dash

 

[Magnus Oyke]

If the air is hot, rather than not cooled, the heater valve is probably stuck open. There will be a hose going from the top of the engine block in to the cab to supply warm coolant for the heater matrix. Somewhere between the engine and the cab there will a tap or valve to switch it off, turn the tap off and then see how your air contioning works.

 

[Michael3112]

Wht he says but you can see the pipes under the cab if you look though between the step an the bottom of the cab can just put a clamp on them

 

[Flatlander]

The two above are right. If it blows cold air after a cold engine start then warms up as the engine gets hotter there is your proof. Two large flat washers and a pair of locking pliers should stop the hot water if there is no tap.

 

[Timbo]

Heater valve. Very very common on all cnh.