Manual |verified| | Ariston Ls 603 Dishwasher User

If you’ve recently acquired an Ariston LS 603 dishwasher—or have had one hiding under your counter for years—you’ve likely discovered that finding the original Ariston LS 603 dishwasher user manual can be surprisingly difficult. Ariston (now part of the Whirlpool group, often branded as Hotpoint-Ariston) produced this model as part of their freestanding or semi-integrated lineup. While the machine is reliable, you need the manual for proper installation, program selection, error code interpretation, and routine cleaning.

Keep a printed copy of this article near your dishwasher as a quick reference. For critical repairs (motor, heating element, or PCB), always consult a certified Ariston technician. ariston ls 603 dishwasher user manual

Use the PDF sources listed in Section 13. And remember: regular cleaning of filters and spray arms will keep your LS 603 running like new for years. If you’ve recently acquired an Ariston LS 603

| Control | Function | |---------|----------| | (rotary) | Select wash cycle (turn clockwise only). | | On/Off Button | Lights up when pressed. | | Start/Pause Button | Starts cycle; press again to pause. | | Half Load Button | For small loads; reduces water/energy. | | Rinse Aid Indicator | Small LED that turns on when rinse aid is low. | | Salt Indicator | Lights when salt reservoir needs refilling. | | End-of-Cycle Light | A green or orange light that flashes when done. | 📘 Manual tip: Do not force the rotary dial past the last program. To reset, turn off the machine. 5. Wash Cycles and Programs Explained The Ariston LS 603 typically includes the following cycles. Numbers refer to dial positions: Keep a printed copy of this article near

Last updated: 2026 – Based on original Ariston documentation and field service experience.

| Cycle # | Name | Duration (min) | Use For | |---------|------|----------------|---------| | 1 | Pre-Wash / Soak | 15 | Loosening dried food, no detergent | | 2 | Rapid 30' | 30 | Lightly soiled dishes, no drying | | 3 | Eco 50°C | 120 | Normally soiled, energy saving | | 4 | Daily 55°C | 80 | Mixed loads, standard use | | 5 | Intensive 65°C | 140 | Pots, pans, heavily soiled | | 6 | Glass / Delicate 45°C | 70 | Crystal, fine china |

| Symptom | Meaning | Solution | |---------|---------|----------| | Start light flashes 1 time/second | Door open | Close door firmly | | Salt & rinse aid flash alternately | Water inlet failure | Check tap is open, hose not kinked | | Rapid light + End flash | Drain problem | Clean filter, check drain hose | | All lights flash rapidly | Internal electronic error | Reset machine (see below) | | No heat during cycle | Heater fault | Call authorized service |