Unox AM03

What does Unox AM03 mean?

AM03 is a safety thermostat alarm on the Slowtop accessory. The Slowtop's safety thermostat has tripped on overheating, so the accessory stops to protect itself. The main oven can still be used while the Slowtop is in alarm.

Symptoms

• AM03 shown referencing the Slowtop
• Slowtop stops heating
• Slowtop overheating before the trip
• Alarm recurs after a reset attempt

Common causes

• Safety thermostat tripped by overheating
• Heating control fault driving the element too hot
• Thermostat fault
• Wiring fault to the thermostat

Diagnostic steps

1. 01

   Allow cooling and reset

   Let the Slowtop cool, reset the thermostat, and consider causes of overheating.

2. 02

   Check heating control

   Verify the Slowtop heating is not being driven continuously by a stuck control.

3. 03

   Test the thermostat

   With power off, test the safety thermostat continuity with a multimeter.

4. 04

   Repair or replace

   Restore faulty wiring and replace the thermostat if it does not test correctly.

When to call a professional

AM03 is a safety thermostat trip on the Slowtop indicating a possible over-temperature condition. Diagnosing the heating control and thermostat is mains-voltage work for a qualified Unox technician; never bypass the safety thermostat.