The topside controls of your hot tub give a range of messages about the testing, modes, and status of your spa. Most of the time, you’ll see routine codes indicating proper functioning.

However, the following codes in this page indicate that something may be wrong.

Note: Hot tubs with multiple pumps typically use more detailed messages to communicate issues. For example, you may see “HTR TOO HOT” (heater too hot) or SNSR SYNCH (sensor synching error). Most often, the recommended actions are the same as with a single pump.

No Message Displayed

If the topside control is completely blank there is either no message to display or no power to the hot tub. Your settings will be saved and restored when the power is back on.

Two Dashes – Unknown Temperature

Two dashes, like this: –, mean the water temperature is unknown. A temp should appear after the pump has run for two minutes.

If you continue to see the dashes after two minutes, call the assistance phone number listed in your manual.

HH – Overheating

Your spa has detected an excessively high temperature at the sensor in the heater chamber. The hot tub is shutting down to protect users from dangerously hot water.

OH – Overheating

Your spa has detected a high temperature at the sensor in the heater chamber (though perhaps not as high as the HH code indicates).

The hot tub is shutting down to protect users from dangerously hot water. This also protects the tub itself from damage caused by overheating.

IC – Ice

The hot tub has detected ice and is alerting you of the potential for freezing. Fortunately, the pump will activate automatically to prevent any freezing.

Of course, if the code persists, you may have an issue with the topside control or even the pump, and we suggest calling the assistance phone number listed in your manual.

SA – Sensor A

Sensor “A” is not working and the spa is shutting down as it cannot properly detect water temperature.

SB – Sensor B

Sensor “B” is not working and the spa is shutting down as it cannot properly detect water temperature.

Sn – Sensor Imbalance

The sensors are out of balance, though this may only be temporary if alternating with water temperature. If the Sn code is flashing by itself on the topside control, the hot tub is shutting down.

HL – Sensor Problem

There is a significant difference between the sensors, and it’s likely indicative of a flow problem.

LF – Flow Problems

The hot tub is having persistent problems with water flow.

dr – Water Level or Flow

It’s possible that the water level is too low in your hot tub. Other issues may be low water flow or air bubbles in the heater. The spa will shut down for 15 minutes.

dy – Too Little Water in Heater

There is not enough water in the heater and the hot tub is shutting down.

Actions to Take When You See an Error Code

In most cases, a few simple steps can address the issue the error code alerts you to.

If you see an HH, OH, SA, SB, Sn, HL or LF, do the following:

● Stay out of the water and turn off the ground-fault circuit interrupter (GFCI).
● Ensure the slice valves are locked in the open position and that there is enough water in the tub.
● Clean the filter, filter basket and suction drain cover, changing the filter if necessary.

If the error code remains when you restore power, call the assistance phone number listed in your manual.

In the case of a dr or dy, do the following:

● Check the water level and refill and treat as needed.
● Ensure the slice valves are up and locked.
● Remove obstructions from the filter basket and suction covers.

Reset the hot tub by pressing any button. If the error code remains call the assistance phone number listed in your manual.

If you’re ever in doubt about the error codes displayed on your topside controls, contact your local Aqua Living dealer with concerns.