ADC Error Code EXHAUST_HI — Exhaust high temperature (180°F/220°F)

Service Guy AI • Dryer • Medium severity • Basic skill • ~45 min repair

What Does ADC Error Code EXHAUST_HI Mean?

Exhaust high temperature (180°F/220°F). Fix rate: 87%

This is a medium-severity fault. The machine may complete the current cycle but is signalling a problem you should resolve before it escalates.

Possible Causes (3)

ADC engineers identify the following root causes for fault code EXHAUST_HI. Work through them in the order shown — they are listed from most common to least common.

1. Component failure
2. Wiring harness issue
3. Control board malfunction

Step-by-Step Troubleshooting (7 steps)

Follow this sequence to diagnose and clear ADC error code EXHAUST_HI. Power down and unplug the machine before any internal inspection.

1. 1. Disconnect power and verify zero voltage before servicing
2. 2. Note the exact error code display and any flashing patterns
3. 3. Test heating element resistance (should be 10-30 ohms)
4. 4. Check thermistor/NTC sensor readings
5. 5. Verify relay operation on control board
6. 6. Replace faulty component and test operation
7. 7. Clear error code and run test cycle

Required Parts

Have these ADC OEM part numbers ready before starting the repair. AAdvantage Laundry Systems carries verified parts for every code in this database.

• High limit thermostat
• Temperature sensor
• Control board
• Wiring harness

Diagnostic Test Mode

Enter ADC diagnostic test mode: Hold 'High Temp + Start'

Skill Level & Repair Time

This repair is appropriate for an experienced laundromat owner or in-house technician. You should be comfortable removing service panels, reading wiring diagrams, and using a multimeter to test continuity and voltage. Plan for approximately 45 minutes of active repair time once parts are on hand.

Get AI-Powered Diagnosis

If the steps above don't resolve ADC EXHAUST_HI, run a free Service Guy AI diagnosis. Upload a photo of the error display and get an AI-generated repair plan tied to your exact ADC model number, including supplier links for required parts and on-call technician escalation.

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