Error Code
medium
Hobart AM16 – Not Dispensing Chemicals
On your HOBART AM16 DISHWASHERS unit, chemicals not dispensing typically indicates issues…
Hobart AM16 - Error 009: Wash Tank Temperature Not Reached During Wash Cycle
Caution / Monitor Closely
Warning: The information provided here is for educational purposes only.
Working with commercial kitchen equipment involves high voltage, gas, and high temperatures.
We strongly recommend contacting a certified service technician for any repairs.
We are not responsible for any damage or injuries resulting from DIY repair attempts.
This information is provided 'as is' without any guarantees of completeness or accuracy.
TLDR
On your AM16 DISHWASHERS unit, error code 009 indicates the wash tank did not reach its target temperature within the set time. This often points to issues with the heating element, temperature sensor, or water supply. Begin by verifying proper water fill and checking the heating element for continuity and power.
Technical Details
Repair Steps:
- Verify Water Supply and Level: Check if the dishwasher is filling with water correctly and that the water level in the wash tank is sufficient. Low water levels can prevent heating elements from being fully submerged and activating, leading to inefficient heating or no heating at all.
- Inspect Heating Element: Visually inspect the heating element within the wash tank for any signs of damage, corrosion, or breaks. Use a multimeter to test for continuity across the heating element terminals. A lack of continuity (open circuit) indicates a faulty element that needs replacement.
- Check Heating Element Power Supply: With the machine powered on (and safety precautions taken), carefully check for proper voltage supply to the heating element. Verify that the heating element’s contactor or relay is closing and sending power to the element when heating is commanded by the control board. A faulty contactor/relay can prevent power delivery.
- Evaluate Temperature Sensor (Thermistor/Probe): Locate and inspect the wash tank temperature sensor (usually a thermistor or RTD probe) for physical damage or loose connections. Test the sensor’s resistance value and compare it to the manufacturer’s specifications for various temperatures. A faulty sensor can provide incorrect readings, causing the control board to mismanage the heating cycle.
- Examine Control Board Outputs: If all components above appear functional, the issue might stem from the control board. Check for any blown fuses or visible damage on the board. A faulty output circuit for the heating element could be preventing it from receiving the necessary power to heat the water.
- Assess Scale Buildup: Heavy lime scale buildup on the heating element or inside the wash tank can significantly reduce heating efficiency and transfer. Descale the machine thoroughly using an approved commercial descaling agent if scale is present.
Common Questions:
Q: Why isn’t my Hobart AM16 wash tank heating up?
A: Common reasons include a failed heating element, a faulty temperature sensor providing incorrect readings, issues with the contactor or relay supplying power to the heater, or an insufficient water level in the tank.
Q: How can I test the heating element on my Hobart AM16?
A: Safely disconnect power to the dishwasher, then use a multimeter to check for continuity across the heating element’s terminals. An open circuit (no continuity) indicates a bad element. You should also verify proper voltage reaching the element when commanded to heat.
Q: Can a faulty temperature sensor cause error 009?
A: Yes, absolutely. If the temperature sensor provides an inaccurate reading to the control board, the board may not correctly detect the wash tank’s actual temperature, leading it to believe the setpoint hasn’t been reached, even if it has or is on its way.
When to call a technician
Consider calling a certified technician if:
- The error keeps coming back after you've tried the steps above.
- You're not comfortable doing the checks or repairs yourself.
- You notice unusual noise, smell, or behaviour.
- Equipment is under warranty and you want official service.
- You need the unit back in service quickly with minimal downtime.