Jackson DynaStar and DishStar HT-E
High-temperature dishwashers with a booster. Codes split into booster faults (F1–F5, F12) and wash tank faults (F6–F11).
What it is: Door-type / undercounter dishwasher. Both use the same F1–F14 and F17 codes. F15/F16 are DishStar HT-E only; F18–F20 are DynaStar only.
Jackson DynaStar and DishStar HT-E error codes
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| F1 | No water in booster | Low water pressure, booster level probe (LLC), inlet valve or fill relay, heater contactor stuck, I/O input, probe T3 or float | Check pressure, then each part in turn. |
| F2 | Check booster thermostat | Heater contactor stuck on, I/O input or probe T3 | Fit a 1.2 kΩ resistor for T3: the heater should go off. If not, replace the I/O module. |
| F3 / F8 | No water in wash tank | Fill solenoid or relay, door open, door switch | Close the door; check the switch and fill. |
| F4 / F9 | Check incoming power | Supply not connected properly, or L3 missing on 3-phase | Check the heater supply. |
| F5 | Check booster thermostat and high limit | I/O input, probe T3, high limit, heater or contactor not pulling in | Fit 1.8 kΩ for T3: the heater should come on. |
| F6 | No water in wash tank (heating) | Pressure, inlet valve, wash heater contactor stuck, probe T1 or float | As F1, for the wash tank. |
| F7 | Check wash tank thermostat | Contactor stuck, I/O input or probe T1 | Use the 1.2 kΩ test on T1. |
| F10 | Check wash tank thermostat and high limit | I/O input, T1, high limit, heater or contactor | Use the 1.8 kΩ test on T1. |
| F11 / F12 | Wash / booster probe failed | Probe T1 / T3 | Replace the probe. |
| F13 | Communication error | 6-pin cable between display and I/O module | Reseat or replace the cable; swap boards to find the faulty one. |
| F14 | Check incoming water pressure or level control | Low pressure, corroded float, fill valve | Check pressure; clean or replace the float. |
| F15 | Sanisure violation (HT-E) | Booster heater or contactor | Check heater current and contactor. |
| F16 | Level control violation (HT-E) | Probe dirty or faulty | Clean or replace. |
| F17 | Inlet water too hot | Supply temperature | Fix the supply temperature. |
| F18 / F19 / F20 | Bottom tank float / top tank float / booster level control (DynaStar) | Corroded or faulty part | Clean or replace. |
Notes
- Probe check: about 11.6 kΩ at 21 °C, 3.05 kΩ at 60 °C and 0.96 kΩ at 100 °C.
For licensed technicians only. This equipment can involve mains voltage, high-voltage microwave circuits, gas and refrigerant. Isolate power (and gas) before opening panels, follow the manufacturer's manual and your local licensing rules (for example ARC refrigerant handling and electrical or gas licences). Wrong settings can spoil food or damage equipment. Check every value on the unit in front of you before changing it.
Based on: Jackson DynaStar and DishStar HT-E (Rev S) installation, operation and service manuals, fault codes. Always check the manual for your exact model and software version.
ServiceModes is not affiliated with Jackson or any other manufacturer. Written in our own words from the manufacturer's documentation.