New Holland T8010 Manual page 1091

STEP 48
Start the tractor and run the engine at 1500 RPM.
Operate the air conditioner system at maximum
cooling setting and blower speed with the door and
service door open, Standard A/C switch ON or ATC
switch in DEFOG/DEFROST position.
NOTE: The compressor does not operate if the
system pressure is too low or too high because the
clutch is latched off by the controller. Standard A/C
units blink the indicator light on the A/C ON/OFF
switch indicating a system pressure problem. To
restart the compressor, the switch must be turned to
the OFF position and then ON. On ATC units, if the
system pressure is to low or to high, a fault code will
toggle between the current cab temperature setpoint
and the fault code on the Instrument Cluster Display.
Section 50 - Climate Control - Chapter 2
50-2-30
1
Standard A/C Controls
1
ATC A/C Controls
1. BLOWER CONTROL
2. ATC OR STANDARD A/C
SWITCH
3
2
RH02J044
3
4
2
RH05J039
3. TEMPERATURE
CONTROL
4. DEFOG/DEFROST