What does SNS mean on a pool heater?

The pool heat can be controlled from the digital control panel and an on-board diagnostic tool informs users if there is a problem with the heater by displaying an error code. The SNS error code indicates that one of the pool heater sensors is not working and some troubleshooting is necessary.

Why does my Spa have an error code SN?

Here’s a Cal Spa troubleshooting chart for when your spa topside display shows a sensor error code Sn, Sn1, Sn2, Sn3… As you can see, it could be a nuisance tripping, or the wires could be absorbing excess heat, need calibration, or simply be faulty.

Where do I find the spa code on my heater?

With these spa sensor codes, the Temperature Sensor is open or shorted. The temp sensor and the high limit are usually located on the heater housing, with 1-2 small wires coming off and connecting to your controller. With the system powered off, you normally unscrew the sensors from the heater manifold, and unplug the wire from the panel.

How to troubleshoot a Rheem pool heater with SNS?

Clean the water temperature sensor, which is on the filter pump, with a cloth slightly dampened with rubbing alcohol. Allow the sensor to air-dry. Reset the circuit breaker by turning the circuit breaker off and then back on. Wait five minutes for the Rheem pool heater to power back on and the “Power” light on the control panel to illuminate.

Why is my SNS on my Pool not working?

The SNS error code indicates that one of the pool heater sensors is not working and some troubleshooting is necessary.

What to do if your pool heater is not working?

If you do, then if the pump is set at the lowest level, it may not be pumping sufficient water to fire the heater. Turn it up a notch and see if it allows the heater to start. Check your thermostat. Has someone moved it down? If so, check the pool temperature, then reset the thermostat above that temperature and see if the heater turns on.

Is there an error code on my pool heater?

After a few hours and a few power cycles, the CE error was gone but the mode would not stay on pool/spa – it would always quickly go back to standby without an error code. After letting it dry out for a few more days, it was working normally today.

Why does my pool heater not start up?

Today we cover the most common reasons why a pool heater will not start up in this heater troubleshooting article. The most common issue when a swimming pool heater won’t heat is also the simplest one, a dirty swimming pool filter. They say that up to 70% of all ‘My heater won’t heat’ service calls are due to low water flow.

When does the fault code appear on a Raypak heater?

Raypak Heater Fault Code Guide 1 Water temperature is below 36F or above 110F 2 If the two thermistors are more than 2 degrees apart, the SNS code will appear. 3 Loose or corroded connection at P1. 4 If the sensor is not mounted all the way into the JACO fitting on the header, it may give a false reading.

What to do if your Raypak pool heater goes bad?

1. Possible excessive water temperature in the tube bundle. Once heater cools, high limits resets automatically. 2. Check for blockage in tubes. 3. Check for low water flow. 4. Check Unitherm governor- replace if necessary 1. Possible excessive water temperature in the tube bundle. Once heater cools, high limits resets automatically. 2.

What does Sn3 mean on a spa heater?

Sn3, HL, EO, E2, E3, Prh, Prr – these all refer to the heat sensors that are usually attached to your heater manifold. Inspect the wire and plugs, check the spa water level and make sure water is flowing free and fast.

The SNS error code indicates that one of the pool heater sensors is not working and some troubleshooting is necessary.