Thermador DWHD/Star Sapphire Dishwasher

<strong>Quick answer:</strong> The Thermador DWHD/Star Sapphire Dishwasher is a well-documented dishwasher with known repair patterns. Most common issue: E24 drain error. Having trouble with your Thermador DWHD/Star Sapphire Dishwasher? This guide has you covered. We break down every known issue for this series — failure rates, error codes, replacement parts, <a href="https://www.cpsc.gov/Recalls" rel="nofollow noopener" target="_blank">recall</a> history, and clear repair-vs-replace advice based on the age of your unit. Use it to troubleshoot on your own or to verify what a technician is telling you.

Models Covered in This Guide#

This guide covers the Thermador DWHD/Star Sapphire Dishwasher series dishwashers, manufactured from 2018-2026. The following model numbers share the same platform, parts catalog, and common failure modes:

• DWHD660WFM
• DWHD760CFP
• DWHD770WFM
• DWHD870WFP
• DWHD660WFP

All models listed above use the same core components and are serviced with the same replacement parts. If your specific model number starts with the same prefix but is not listed, this guide still applies — Thermador uses common platforms across model variants within a series.

Quick Specifications#

Top 5 Most Common Problems#

Based on repair data for Thermador DWHD/Star Sapphire Dishwasher dishwashers, these are the most frequent issues ranked by how often we see them in service calls. Understanding these common failures helps you identify problems early and make informed repair decisions.

1. E24 drain error (26% of repairs)#

E24 drain error — identical to Bosch platform, same root cause and fix

Frequency: This issue accounts for approximately 26% of all service calls on the Thermador DWHD/Star Sapphire Dishwasher series.

2. CrystalDry zeolite degradation (14% of repairs)#

CrystalDry zeolite degradation — same issue as Bosch 800 Series

Frequency: This issue accounts for approximately 14% of all service calls on the Thermador DWHD/Star Sapphire Dishwasher series.

3. Star Speed cycle not completing (10% of repairs)#

Star Speed cycle not completing — control board timing error

Frequency: This issue accounts for approximately 10% of all service calls on the Thermador DWHD/Star Sapphire Dishwasher series.

4. Sapphire interior LED lighting failure (8% of repairs)#

Sapphire interior LED lighting failure

Frequency: This issue accounts for approximately 8% of all service calls on the Thermador DWHD/Star Sapphire Dishwasher series.

5. E15 leak sensor from sump gasket wear (10% of repairs)#

E15 leak sensor from sump gasket wear

Frequency: This issue accounts for approximately 10% of all service calls on the Thermador DWHD/Star Sapphire Dishwasher series.

Error Codes for Thermador DWHD/Star Sapphire Dishwasher#

The Thermador DWHD/Star Sapphire Dishwasher series may display the following error codes on its control panel or digital display. Error codes are your dishwasher's way of telling you what component has failed or what condition has been detected. Click any code below for a detailed diagnosis guide with step-by-step repair instructions:

• Error E24 — click for full diagnosis and fix
• Error E15 — click for full diagnosis and fix
• Error E09 — click for full diagnosis and fix
• Error E22 — click for full diagnosis and fix
• Error E01 — click for full diagnosis and fix
• Error E04 — click for full diagnosis and fix

If your Thermador DWHD/Star Sapphire Dishwasher is displaying an error code not listed above, try a power reset first: unplug the unit (or flip the circuit breaker) for 60 seconds, then restore power. Many transient errors clear with a simple reset. If the code returns, the underlying issue requires professional diagnosis.

Which Parts Commonly Fail?#

These are the parts most frequently replaced on Thermador DWHD/Star Sapphire Dishwasher dishwashers. Part numbers are specific to this series — when ordering, always verify the part number against your exact model number, as there may be minor variations between production years.

Part costs vary by model and supplier. Professional installation adds additional labor cost depending on the complexity of the repair and your location.

Detailed Part Replacement Guides#

These guides cover the full replacement process including tools needed, step-by-step instructions, and what to test after installation:

• Bosch Dishwasher Drain Pump Replacement Guide
• Bosch Dishwasher Heating Element Replacement Guide
• Bosch Dishwasher Control Board Replacement Guide

Recall Status#

There are no active recalls on the Thermador DWHD/Star Sapphire Dishwasher series as of 2026-05-28. We recommend checking the Consumer Product Safety Commission at cpsc.gov periodically with your specific model number, as recalls can be issued at any time. You can also sign up for email alerts on the CPSC website to be notified if a recall is issued for your appliance.

Repair vs. Replace: When Is It Worth Fixing Your Thermador DWHD/Star Sapphire Dishwasher?#

This is the most common question we hear from Thermador DWHD/Star Sapphire Dishwasher owners. The answer depends on three factors: the age of the unit, the cost of the repair, and the cumulative repair history.

Thermador dishwashers are the premium BSH tier (above Bosch 800 and Benchmark). The interior is identical to Bosch — the premium is in finish and speed features. Always worth repairing.

General rule for the Thermador DWHD/Star Sapphire Dishwasher: If the unit is under 10 years old and the repair costs less than 50% of a new equivalent model, repair is almost always the better value. After 10 years, evaluate the total repair history — if cumulative repairs over the past 2-3 years exceed 40% of replacement cost, upgrading to a new unit provides better long-term value and a fresh warranty.

Repair Decision Matrix by Age#

| Unit Age | Minor Repair | Major Repair | Critical Repair | |---|---|---|<p>This matches what our service teams see in practice: having trouble with your thermador dwhd/star sapphire dishwasher?.</p>

---| | Under 5 years | Repair | Repair | Repair (usually) | | 5-10 years | Repair | Evaluate total history | Consider replacing | | Over 10 years | Repair if otherwise healthy | Consider replacing | Replace recommended |

Preventive Maintenance for Thermador DWHD/Star Sapphire Dishwasher#

Regular maintenance is the most cost-effective way to extend the life of your Thermador DWHD/Star Sapphire Dishwasher and prevent the common failures listed above. Follow these practices:

1. Follow the same maintenance schedule as Bosch 800 Series — the internal platform is identical
2. Clean the Sapphire LED modules with a damp cloth quarterly to maintain lighting quality
3. Use the Star Speed cycle for lightly soiled loads only — heavily soiled loads may not clean fully in 20 minutes
4. Descale the CrystalDry system with vinegar monthly, same as Bosch

Related Troubleshooting Guides#

If your Thermador DWHD/Star Sapphire Dishwasher is experiencing a specific symptom, these detailed guides walk you through the diagnosis process step by step:

• Bosch Dishwasher Not Draining
• Bosch Dishwasher Leaking
• Bosch Dishwasher Not Heating

What Are the Best Long-Term Ownership Tips?#

To keep your dishwasher running efficiently, clean the filter assembly every 1-2 weeks, run an empty hot cycle with dishwasher cleaner or white vinegar monthly, and use rinse aid for better drying results. Load dishes so that nothing blocks the spray arm rotation — the spray arms must spin freely for proper cleaning. Scrape but do not pre-rinse dishes — modern dishwashers need some food residue for the soil sensor to determine the correct cycle intensity.

Need Professional Help With Your Thermador DWHD/Star Sapphire Dishwasher?#

We've repaired thousands of Thermador DWHD/Star Sapphire Dishwasher dishwashers across Sacramento and the Bay Area. Our technicians carry the most common Thermador replacement parts on every service call, which means most repairs are diagnosed and completed in a single visit — no waiting for parts to arrive.

Book your Thermador DWHD/Star Sapphire Dishwasher repair today at /book — same-day and next-day appointments available. We provide upfront pricing before any work begins, and all repairs include a 90-day parts and labor warranty.