Dacor dishwashers feature a model‑specific error code system with F‑series codes (F1–F9) on premium 24″/30″ models like ED24, ID24, PD24, and MDW24, plus LED indicators (3 beeps/red light) for drain/leak faults.
These codes activate during self‑diagnostics to pinpoint issues like heater failure or inlet problems, helping users avoid unnecessary service calls.
Service manuals emphasize Factory Test Mode (FTM) for verification across EDW/IDW/PDW lines.
Dacor error codes by model group
Dacor segments codes by series:
ED24, ID24, PD24, MDH24S (Classic integrated)
| Code | Meaning | Causes/Fix |
|---|---|---|
| F1 | Drain pump fault | Clogged hose/impeller; clean, test spin |
| F2 | Inlet valve won’t shut | Stuck solenoid/board; power off fill test |
| F3 | Low inlet pressure | Screen clog/low PSI; clean, verify 120°F supply |
| F4 | No pressure switch signal | Wiring/sensor fail; continuity test 3 positions |
| F5 | Control board defective | Reset 5 min; replace if persists |
| F9 | Heater failure | Flow block/element open (11–13Ω); inspect inline |
| 3 beeps/red flash | Failed to drain | Sink/hose block; cancel x2, clear impeller |
| 3 beeps + drain + Floor Guard LED + red on | Base leak (floor guard) | Dry base/float; inspect hoses/heater seals |
MDW24 (Basic LED models)
| Code | Meaning |
|---|---|
| CL | Close & latch door |
| CF | Clean filters |
| LO | Low rinse aid |
| PF | Power failure |
| HO | Heating delay |
| 01–04 | Delay hours |
EDW/IDW series (Alternate F‑codes)
| Code | Meaning |
|---|---|
| F1 | Inlet valve error |
| F2 | Circulation pump |
| F3 | Heater |
| F4 | Drain pump |
| F5 | Air flow fan |
| F6 | Controller |
| F9 | Pressure sensor |
Drain fault (3 beeps/red light)
Symptoms: Cycle aborts; pump runs continuously.
Triggers: Blockage anywhere in drain path.
Detailed fix:
- Press Cancel twice (resets).
- Check sink disposal/garbage (common backup).
- Disconnect hose at sink; flush with hot water.
- Access sump: Remove filter, clear glass/utensils, spin pump impeller (should rotate freely).
Parts: Drain hose ($40), pump assembly ($150–200).
Leak detection (Floor Guard)
Symptoms: Wash stops, 3 beeps, drain activates, red light steady, Floor Guard LED.
Mechanism: Float switch in base pan rises with ~1 pint water.
Resolution:
- Power off/circuit breaker.
- Slide out unit; tilt 45° to drain into towels.
- Sponge base; dry float (magnetic reed switch).
- Inspect: Inlet valve drip, heater O‑ring, sump gasket, tub seams.
Common leak sources: 60% hoses, 25% heater, 15% door seals.
F2: Overfill (Inlet valve issue)
Test: Power off if still fills, valve stuck ($80 part). If stops, board fault ($400+).
Wiring: Secure harness; ohms solenoid ~1100Ω.
F3/F4: Water supply/pressure faults
F3: Fill >2 min clean inlet screen (brass filter at valve).
F4: Pressure switch (3‑position): Dry=closed, mid=open, full=closed. Replace $30.
F5/F9: Electronics/heater
F5: Voltage reset; board LEDs (green=OK).
F9: Inline flow‑thru heater check flow first (arms clogged?), then resistance.
Factory Test Mode (FTM) guide
ED/ID/PD:
- Hold Key icon 3s (unlock Secure Mode).
- Delay + Sani (door open).
- Close door: Sequence tests drain/fill/wash/dispenser/drain.
Flags failures with F‑codes post‑test.
MDW24: Power + Start/Stop (3 beeps).
Troubleshooting master table
| Symptom/Beeps | Probable Code | First Check | Pro Needed If… |
|---|---|---|---|
| Won’t drain | 3 beeps/F1/F4 | Hose/impeller/sink | Pump seized |
| Leaks water | Floor Guard | Base dry, hose inspect | Heater/tub crack |
| Long fill | F3 | Inlet screen/supply | Pump pressure low |
| No heat | F9/F3 (EDW) | Spray arms/hot water | Element/thermistor |
| Blank + beeps | Drain fault | Disposal reset | Wiring harness |
| Door won’t latch | CL | Striker/gasket | Microswitch |
Parts sourcing & service
OEM: Via Dacor/Samsung dealers (post‑acquisition).
Lifespan: 10+ years with maintenance; heater most common fail (~7 years).
Costs: Tech visit $150–250 + parts.
Prevention routine
- Daily: Scrape plates.
- Weekly: Rinse arms (remove, soak vinegar).
- Monthly: Filter clean (CF mode).
- Yearly: Base inspect, valve screen.
FAQs: Dacor dishwasher error codes
3 beeps/red light?
Drain fault clear hose/disposal first.
F4 pressure switch?
Wiring or sensor; test 3 states.
Floor Guard trigger?
Leak dry base, find source (heater common).
F5 board DIY?
No; high voltage, $400+ part.
MDW24 CL code?
Door latch adjust striker.
FTM for diagnostics?
Yes tests all motors/valves/heater.
