70
Rev 4/2018
6. Start engine and turn on air conditioning. If switch
shuts off compressor again, contact your Freeman
dealer.
High Pressure
Switch
Figure 96. High Pressure Switch
Low Pressure Switch
The low pressure switch (located under passenger
seat) protects the compressor if refrigerant is lost.
The switch can also activate if there is insufficient
air flow across the evaporator. It can also cause
the compressor to cycle on cool days or if there is
a slow leak in the system (see Figure 97).
1. Clean condenser and cab air filters.
2. Check recirculating blower.
3. Check for a worn or broken serpentine engine
belt.
4. If the compressor cycles excessively, or if there
is no cooling, contact your Freeman dealer.
Low Pressure
Switch
Figure 97. Low Pressure Switch
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