Thermador Dishwasher SA NL Indicator: Salt and Rinse Aid Refill

Quick Answer

SA and NL are not error codes on Thermador dishwashers - they are consumable refill indicators. SA stands for the water softener regenerating salt reservoir, and NL indicates the rinse aid dispenser is low. When both appear simultaneously, it simply means both need to be topped up. Refilling salt requires opening the softener cap on the floor of the tub and pouring in granular regenerating salt (not table salt). The rinse aid dispenser is typically on the inner door panel next to the detergent compartment. After refilling both, run a short cycle and the indicators will clear automatically as the sensors detect the replenished levels.

ThermadorDishwasherSeverity: low99% DIY Success

Time to Fix

3–10 min

Difficulty

beginner

Parts Cost

—

Tools Needed

Funnel (optional, helpful for salt refill), Dishwasher-grade regenerating salt

Wrong code?

Not seeing SA-NL on your display?

Select what your appliance is actually doing and we'll take you to the right guide.

salt and rinse aid lights flashing

BoschSA-NL

What Does the SA-NL Code Mean?

SA and NL are not faults - they are refill reminders. Top up the salt reservoir in the base of the tub and the rinse aid dispenser on the door. Both indicators clear automatically after refilling.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Salt reservoir depleted through regular water softening cycles40%

Both consumables running out at the same time after heavy use36%

Rinse aid dispenser emptied through normal use24%

Symptoms You May Notice

SA and NL indicators both lit or flashing on the control panel
Indicators may appear during standby or at end of cycle
Dishes may show water spots or streaking if rinse aid has been empty for a while
Machine operates normally otherwise

Can you reset a Thermador dishwasher to clear the SA-NL code?

SA and NL indicators clear automatically after the salt and rinse aid are refilled. No manual reset is required - run a normal cycle and both indicators will turn off once the sensors detect the replenished levels. If an indicator stays on after refilling, confirm the reservoir cap is tightly closed (for salt) or the dispenser is properly sealed (for rinse aid).

Tools Required for Diagnosis

Funnel (optional, helpful for salt refill)Dishwasher-grade regenerating saltLiquid rinse aid

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Open the dishwasher door

Open the dishwasher door. Locate the salt reservoir cap on the floor of the tub - it is a circular screw cap typically marked with an S or salt symbol. Unscrew it and check the level.

Pour dishwasher-grade regenerating salt into the reservoir using

Locate the rinse aid dispenser on the inner door panel (usually

Close the door and run a short rinse cycle

Frequently Asked Questions

What does SA mean on a Thermador dishwasher?

SA stands for Salt. It indicates the water softener salt reservoir in the base of the tub needs to be refilled. Use only dishwasher-grade regenerating salt - not table salt or sea salt.

What does NL mean on a Thermador dishwasher?

NL stands for the rinse aid indicator. It means the rinse aid dispenser on the inner door is empty and needs to be refilled with liquid rinse aid.

Can I run the Thermador dishwasher without salt?

You can run the machine short-term, but if you have hard water, running without regenerating salt will cause the water softener resin bed to lose effectiveness. Over time this leads to limescale buildup on the heating element and spray arms. Refill the salt promptly.

Why are both SA and NL showing at the same time?

Both consumables are monitored independently by separate sensors. When the levels of both drop below threshold at the same time - which often happens after extended use - both indicators activate simultaneously. There is no fault condition; simply refill both.

The SA indicator is still on after I refilled the salt. What is wrong?

The salt sensor needs to see water dissolving the salt before it registers a full level. Make sure the reservoir cap is screwed on tightly, then run one full wash cycle. The indicator should turn off once the water softener has gone through a regeneration cycle.

Related Thermador Dishwasher Error Codes

Code: HUBThermador Dishwasher Error Codes: Complete List for DWHD and Sapphire Series Code: RESETHow to Reset a Thermador Dishwasher and Clear Error Codes Code: E22Thermador Dishwasher E22 Error Code: Filter Blocked

Same Fix on Other Brands

Bosch dishwasherSA-NL: Bosch Dishwasher SA NL Indicator

Same Fix Works on These Brands

Thermador shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Bosch dishwasherBosch Dishwasher E15: Fix the Anti-Flood Alert Fast Bosch dishwasherBosch Dishwasher Error Codes: Complete List + Fixes Bosch dishwasherHow to Reset a Bosch Dishwasher (Every Method)Bosch dishwasherBosch E24 Error: Drain Problem Solved Step by Step Bosch dishwasherBosch E25 Code: Drain Pump Fix Without a Technician Bosch dishwasherBosch Dishwasher Not Draining: Every Cause Covered

Models Known to Experience SA-NL Errors

This repair applies to most Thermador dishwashers with this error code. Common model numbers include:

DWHD440MFP, DWHD640JFP, DWHD640ZFP, DWHD660ZFP, DWHD771WFP

Last verified for technical accuracy on March 14, 2026