What are the error codes for the high limit sensor?

Spa Error Codes: Sn, Sn1, HL, E2, E3, Prh For these trouble codes, the high limit sensor is open or shorted. It could be a loose plug connection or bad wire, or it could be a problem related to water flow.

Why is my spa error code SN2 not working?

If water is not flowing through the heater chamber fast enough, it gets too hot, and the safety high temp sensors go into action – just doing their job. For these trouble codes, the high limit sensor is open or shorted. It could be a loose plug connection or bad wire, or it could be a problem related to water flow.

What to do when a no code sensor fails?

All that a diagnostic tech should do to solve a driveability problem was retrieve the trouble code and replace the faulty sensor. Thirty years later, most of us realize that no-code sensor failures are a fact of life.

What do SN, SN1 and SN2 codes mean?

In summation; when you have spa trouble codes of Sn, SnA, Sn1, Sn2. 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.

What does SN stand for in a spa code?

As you can see, it could be a nuisance tripping, or the wires could be absorbing excess heat, need calibration, or simply be faulty. In addition to the Sn, Sn1, Sn2 type of error codes, other codes for Smart Sensor spas, such as SA, Sb, SnA, SnB error codes are used on many spas and hot tubs.