Free guide

Heating & Boiler Help

These are general terms, not instructions for your model. Controls and error codes vary; follow the exact manufacturer manual.

Gas smell or carbon monoxide alarm? Move to a safe place and contact emergency services or a qualified professional. Do not use switches, flames or attempt repairs.

Understand My Heating

온돌

Ondol / floor heating

Warm water circulates through floor pipes in many Korean homes. Controller settings and temperature meanings depend on the model.

실내

Room mode

Generally uses room-temperature sensing. Sensor location and model settings affect operation.

외출

Away mode

An away setting, not necessarily a complete shutdown. Frost protection and behavior vary by model.

예약

Timer / scheduled mode

Schedules or intervals vary. Confirm whether the number means a start time, interval or run duration in your manual.

온수

Hot water

Controls domestic hot water on compatible models. Avoid scalding temperatures and follow the manufacturer’s instructions.

Manufacturer manuals & safety

Korea Gas Safety Corporation · Gas Safety Guide for Foreigners — EnglishLast reviewed: 2026-10-31Rinnai Japan · Official model manual search — Japan models onlyLast reviewed: 2026-10-31KyungDong Navien · Official Korean model manual searchLast reviewed: 2026-10-31

No matching model manual is verified here. Search your exact model on the manufacturer’s official website.

Sign in to save privately

Fix My Heating

Text repair analysis: 1 credit · image analysis: 2 credits. A text + image request is one image operation, not two charges.

Optional AI analysis