ITW Food Equipment Group 01 Error Code
Booster temperature above upper limit
Source: ITW FOOD EQUIPMENT GROUP/00008 EDH-EDL_EUH-EUL Dishwashers Operation and Error Card F48737 (01-23).pdf
What does ITW Food Equipment Group 01 mean?
The dishwasher's booster heater temperature has risen above its allowed upper limit. The control monitors the booster (the final rinse water heater) and trips this error to protect the machine when it reads too hot, which usually points to a tripped high-limit thermostat or a heating element that is not switching off correctly.
Symptoms
- Error code 01 shown on the temperature display
- Rinse or booster water running hotter than normal
- Machine stops or refuses to complete a wash cycle
- Error returns after a normal restart
Common causes
- High-limit thermostat tripped on the booster
- Booster heating element malfunction (stuck on)
- Booster temperature sensor reading out of range
- Control fault in the booster heat circuit
Ask the AskWhiz AI about ITW Food Equipment Group 01
AskWhiz
online
Diagnostic steps
Power the machine off
Press the power button to switch the dishwasher off and allow roughly 20 minutes for the booster to cool down.
Restart as normal
Press the power button again to restart the machine the way you normally would and let it run through its fill and heat sequence.
Watch for the error to clear
Run a cycle and confirm whether code 01 returns once the booster reaches operating temperature.
Call Hobart Service if it persists
If the error continues to display, the cause is likely a high-limit trip or heating element malfunction; contact Hobart Service at 1-888-4HOBART.
When to call a professional
Call Hobart Service if code 01 keeps returning after a power-off, cool-down and restart. A persistent high-limit trip or a heating element that will not switch off involves the booster's heating circuit and safety thermostat, which carry line voltage and high water temperatures. Diagnosing and replacing these parts should be left to an authorized Hobart technician.
Stop searching through PDFs. Our AI assistant on WhatsApp is trained on official ITW Food Equipment Group documentation and can diagnose this fault code and guide you through the repair in minutes.
5 free questions per bot in your browser — no signup.
Other ITW Food Equipment Group Error Codes
Booster temperature below lower limit
Rinse assurance – booster did not meet temperature or water level requirements
Wash tank temperature above upper limit
Wash tank temperature below lower limit
Booster pressure level sensor voltage above upper limit
Booster pressure level sensor voltage below lower limit
Wash tank pressure level sensor voltage above upper limit
Wash tank pressure level sensor voltage below lower limit
Drain overflow limit – wash tank water level exceeded limit
Wash tank fill time exceeded
Drain error – shutdown; machine took too long to drain
Fill error – booster took too long to fill