When do you close the pressure switch on a Balboa hot tub?
The Balboa system looks for the pump to be running when the pressure switch is CLOSED. That is when the system can heat. Newer style Balboa M7 systems have 2 sensors built into the heater tube that monitor temperature and high limit functions and eliminate the need for a pressure switch on those systems.
How do you repair a pressure switch on a hot tub?
The spa tech will start by using an ohmmeter (with the entire spa powered off) and will remove the 1 of the pressure switch wires. Then measure across the 2 terminals on the pressure switch.
What does it mean when your hot tub pressure switch is open?
On some Balboa systems, the FLO error message alternating with current temperature readout means the pressure switch is open. If the switch is open, the spa will not heat as it is not sensing proper water pressure in the heater tube. First try to power down and restart the spa. Maybe the problem will magically disappear!
How to troubleshoot pressure switch on Balboa LJS?
Attach the pressure switch wire and the 2 volt-ohm meter probes to the Balboa LJS troubleshooting stick (jumper stick). You should see continuity (0 ohm reading). Rotate the thumbwheel on the pressure switch in the clockwise direction until no continuity is shown on the ohmmeter.
How does the pressure switch on a Balboa hot tub work?
Newer style Balboa M7 systems have 2 sensors built into the heater tube that monitor temperature and high limit functions and eliminate the need for a pressure switch on those systems. How the pressure switch works is that it changes between open and closed depending on water pressure.
What to use to replace pressure switch on hot tub?
Clean the area where the pressure switch is located with a metal brush. Use plumber’s sealant (or teflon tape) when installing a new pressure switch. If the problem continues, then replace the circuit board. The LJS Logic Jumper Stick by Balboa makes adjusting pressure switches a breeze, so every service truck should have one.
What is the installation manual for a Balboa spa?
End User Warning This Installation Manual is provided solely to aid qualified spa service technicians in installing spas with control systems manufactured by Balboa Water Group. Balboa controls have absolutely no end user serviceable parts.
How does the Balboa M7 hot tub system work?
The Balboa M7 system did away with the old-style pressure switches and also the temperature sensor inside the hot tub thermowell. With the M7 style heater, there are 2 equal sensors that are built right into the heater manifold. These replaceable sensors take on different functions depending on the direction of water flow.
