MovinCool Classic 40 Service Manual - Manual (Page 21)

Operation Section
21
4.6 High Pressure Switch
• The high pressure switch prevents the
condenser and compressor from being
damaged by excessively high pressure in the
high pressure line of the refrigeration cycle.
The switch is normally closed. The snap disk
responds to the variations in pressure and, if
pressure is abnormally high, the snap disk
moves down to push the pin down, causing the
internal contacts to open. This interrupts the
ground signal at the control board (CN13 connector) which turns the compressor off.
• Possible causes of this trouble include:
- The condenser air filter is dirty, restricting air flow.
- The condenser blower is defective.
I001768
Pressure of Refrigerant
Movable Point
Snap Disk
Pin
Terminal
Lead Wires
Stationary Point
Molding by Resin
Case