What does OH mean on hot tub display?

overheat
OH, OHH or OHS (overheat) all mean that a temperature sensor has detected unsafe water temperatures of 108° – 118° F, and your spa is in an emergency cool down mode. The heater is shut off, and the circulation pumps and blower are turned on to help dissipate heat.

Why does my Sundance spa go into Oh error code?

Another issue that comes up and is an indication of a bad temp sensor is the temperature reading becomes inaccurate or the spa is going into the OH error code. If you power the spa down and power it back up it may work for a while but will do the same thing again. You need to replace the Temp Sensor. 3. FLO or OH Error Code

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.

Where is the control panel on my hot tub?

For a control panel that is built into the hot tub if you have a look inside the service bay of the hot tub you will probably see that it is also connected to the hot tub via a cable which will no doubt be plugged in somewhere. Again check for corrosion.

What does the code OH mean on a hot tub?

OH : Overheat. Spa temp over 108°. HLoH : Hi Limit Over Heat. Hi limit sensor is disconnected, shorted, or spa temp is above 112° F. SEoP : Sensor open or disconnected. Heater disabled but spa operational. SESH : Sensor short, nonfunctional. Heater disabled but spa operational.

What does open sensor on spa water mean?

Open sensor (heater is deactivated) or Shorted sensor (spa is deactivated). Open or shorted sensor ( heater disabled). Overheat Protection (Heater is deactivated, pumps low speed is activated). Spa water is more than 20° F cooler than the temperature set point.