High Priority – Heat strip failed to turn black to indicate the sanitization temperature of 160 degrees Fahrenheit was achieved on the dish surface and/or high temperature holding thermometer did not reach 160F. Discontinue use of dishmachine for sanitizing and set up manual sanitization until dishmachine is repaired. Dishmachine tested at 112F maximum temperature. Maintenance person arrived and found booster heater without a full circuit. Repair was made during inspection and dishmachine was retested to 163F. **Corrected On-Site**