켜기
- 1Press 난방 (top button). Its lamp lights.
A tall, narrow Rinnai panel: a temperature screen on the left and a column of round buttons on the right (난방, ▲/▼, 온수, 예약, 외출), with room/floor chosen by a tiny slide switch on the bottom edge.

Slide switch on 실온, target 22°C; hot water 중.
| 빨간 램프 (연소 옆) | Red lamp | Burner firing (blinks). |
|---|---|---|
| 난방 램프 | Heating lamp | Heating is on. |
| 고/중/저 램프 | Hot water level | Hot water on at that level. |
| 예약 램프 | Timer lamp | Timer running. |
| 외출 램프 | Away lamp | Away mode on. |
| 깜박이는 숫자 | Blinking number | Error code. |
If the boiler stops and a number blinks on the screen, read the number. 11 = no ignition: check the gas valve on the pipe is open (handle parallel to the pipe), then switch heating off and on. 14 = overheat cut-out: wait up to 30 min, then switch on again. 16 = water overheating: open at least one floor-zone valve on the manifold and bleed air. Anything repeating: call Rinnai A/S 1544-3651.
A/S: 1544-3651