HVAC High Pressure Switch
|
HVAC High Pressure Switch How to Test a HVAC High Pressure Switch 1 Inspect the terminals on the pressure switch. If any of them are burnt or badly discolored, then you should replace the switch. 2 Set the voltmeter or multimeter to display AC volts. 3 Touch one of the probes from the meter to either one of the terminals on the pressure switch. Ground the other probe from the meter by touching it to any nearby bare-metal surface on the system. 4 Check the voltage reading on the meter. If you are getting a reading of less than 24 volts, then the pressure switch should be open. If all hoses, vents and coils are free of clogs and clean, you may have a faulty pressure switch. |
Previous:Low Differential Pressure Switch next:Low Air Pressure Switch