Unox AS01

What does Unox AS01 mean?

AS01 (listed with AS02) is a floor or ceiling safety thermostat alarm on the static oven accessory. A safety thermostat protecting the floor or ceiling heating has tripped due to overheating, so the static oven stops to protect itself. The oven body can still be used while the static accessory is in alarm.

Symptoms

• AS01 shown referencing the static oven
• Static oven stops heating
• Floor or ceiling running too hot 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 static oven cool, reset the thermostat, and consider causes such as installation and external heat.

2. 02

   Check heating control

   Verify the floor/ceiling 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 wiring or replace

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

When to call a professional

AS01 is a safety thermostat trip on the static oven, indicating a possible over-temperature condition. Diagnosing the heating control and thermostat involves mains-voltage testing and Unox accessory knowledge for a qualified technician; never bypass the safety thermostat.