Hot Spring Pressure Switch 73995

The pressure switch is a safety device designed to prevent overheating of the spa heater should a low or no-flow condition exist in the spa.Electrical OperationThe pressure switch is located in the heater circuit. When the switch is closed (proper flow), voltage is transferred to the heater circuit when the control thermostat calls for heat. Activating the relay allows the heater to activate. When the switch is open (low flow), voltage to the heater circuit is interrupted regardless of the state of the control thermostat. This prevents the heater from activating until the low flow condition has been resolved.WARNING: The pressure switch is a safety device and should never be bypassed or tampered with.

Never attempt to calibrate the pressure switch.The following are some of the common causes of pressure switch tripping;Dirty or Clogged filtersClogged heater returnLow Water level RemovalDisconnect power to the spa.Remove the equipment compartment door.Drain the spa or use the plug system.Open the drain valve to bleed the water out of the plumbing.Open the control box lid.Disconnect the pressure switch connection wires from the pressure switch.Unscrew the pressure switch from the heater and remove any residual Teflon tape from the threads of the heater body where the pressure switch was connected.Reverse the removal procedure to install the pressure switch in the control box.NOTE: Wrap one piece of Teflon tape (in the opposite direction of the threads) three times around the pressure switch threads before installation. When screwing the new pressure switch into the heater, DO NOT use pliers, grasp the body of the pressure switch and hand tighten only. After you are finished with the installation, switch the jet pump to high speed and check the pressure switch for leaks. 73995 Pressure Switch is for the following models. MakeModelDate RangeHot Spot Relay2010-CurrentHot Spot Rhythm 2010-CurrentHot Spot Tempo 2010-Current Hot Spot SX 2011-Current Hot Spot TX 2011-Current Hot Spot Mallorca 2006-2009Hot Spot Sorrento 2006-2009Hot Spot La Palma 2008-2009 Hot Spot Tobago 2006-2009Hot Spot Trinidad 2006-2009 Solana SX 2006-2010Solana TX 2006-2010 Solana RX 2006-2009 CalderaPalatino 2010-Current Caldera Marino 2010-Current Caldera Vanto 2011-Current Caldera Aventine 2006-CurrentCaldera Cumberland 2006-2009Caldera Olympia 2006-2009Caldera Tarino 2013-Current Caldera C 30 2006-2009Caldera San Gabriel 2008-2008 Caldera Oasis 2006-2009Caldera C 45 2006-2009