What does the pressure switch do on a hot tub?
The Pressure Switch on a hot tub or spa is a pressure sensor that is mounted onto the heater housing, or very close to the exit point of the heater. It’s sole purpose is to shut off the heater if low pressure (low water flow) occurs.
What should I do if my hot tub pressure switch is not working?
Rotate the thumbwheel on the pressure switch in the clockwise direction until no continuity is shown on the ohmmeter. Turn on the high-speed pump (main heater pump) and let it run for at least ten seconds. Continuity should appear on the ohmmeter (0 ohms resistance).
What is the pressure switch flow code for a hot tub?
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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.
How to check for continuity in a hot water heater?
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. Turn on the high-speed pump (main heater pump) and let it run for at least ten seconds. Continuity should appear on the ohmmeter (0 ohms resistance).
When to replace the pressure switch on a hot tub?
Generally, if the pressure switch cannot be adjusted, it may need to be replaced – unless the problem is with the circuit board. 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.
Why is the air switch on my spa not working?
More times than many, when customers call Presair, we are able to help them find a solution to why the air switch in a spa isn’t working. Typically the operator is finding a kink or leak in the airline that is not allowing air to pass to the air switch to open or close the contacts.
What to do if the main pump is off in Sundance spa?
If debris is present, remove debris, install switch and test system. If condition still exist, replace switch.) if switch measures infinite (no continuity) with pump off, switch is OK, Turn on Main pump and measure across switch terminals for continuity. If continuity is measured, switch is OK.
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.
