What does the code indicate?
For Baymak boiler, code E03 is described by the manufacturer source as “Overheating fault”. Verify the exact model and series because code meanings can vary between product families.
Safe check order
- Record the code and confirm the exact model from the product label.
- Do not reset if there is a gas smell, burning smell or water leakage; isolate supplies safely.
- Use reset or other user actions only as permitted by the manual for the exact model.
When should use stop?
If gas is smelled, do not use the boiler. Close the gas valve if safe, ventilate, avoid electrical switches or open flames and contact the relevant gas emergency service. Also stop use for major water leakage, smoke or repeated electrical faults.
Model note
Luna Avant condensing boiler manual
Model and series differences can change the meaning of an error code. Verify the product label and manufacturer documentation.
Manufacturer source: Baymak
Baymak Boiler E03Baymak E03 error code