Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
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Refrigerant Pressure Sensor / Switch: Description and Operation
A/C PRESSURE SWITCHAir conditioning system pressure below
176.5 ± 9.6 kPa (25.6 ± 2.8 psi) indicates a loss of refrigerant or refrigerant oil. The A/C pressure switch opens with low system pressure to prevent compressor damage. Also, with system pressure above
2942 ± 196.1 kPa (426.6 ± 28.4 psi), the A/C pressure switch opens to prevent compressor damage.