Turn it on
- 1Press 전원 (big round button, top right).
SK SRD-T10 in English
A white SK panel (a rebadged Daewoo DR-T10) with a red two-digit display, five mode lamps, three round buttons on the right and six bar buttons below.
What does each button do?
- 1Burning lamp · 연소yeonsoLights while the flame is on; blinks with the display if ignition fails.
- 2Display · 룸콘 표시부rumkon pyosibuShows boiler heating-water temperature (not room temperature), settings while blinking, or error codes.
- 3Power · 전원jeonwonTurns the controller on or off.
- 4Hot-water lamp · 온수 램프onsuHot water is on (lit alone in this photo = hot water only).
- 5Away lamp · 외출 램프oechulAway (freeze protection) is on.
- 6Heating lamp · 난방 램프nanbangHeating is on.
- 7Quick hot water lamp · 빠른온수 램프ppareun onsuQuick hot water is on.
- 8Timer lamp · 타이머 램프taimeoTimer is on.
- 9Heating · 난방nanbangPress: heating setting blinks (50–80°C). Press again to confirm. Press while heating is on to turn heating off.
- 10Hot water · 온수onsuPress: hot-water level blinks (H1 low / H2 mid / H3 high). Press again to confirm. Press while on to turn hot water off.
- 11Set temp · 설정온도seoljeong ondoPress once: heating setting blinks; press again: hot-water level blinks. Change with ▲▼.
- 12Away · 외출oechulFreeze protection only. No heating and no hot water.
- 13Quick hot water · 빠른온수ppareun onsuPre-heats so hot water comes faster; press ~1 min before use. Auto-cancels after a while.
- 14Timer · 타이머taimeoRepeating heating: 30 minutes every 1–24 hours.
- 15Up · ▲wiRaises the blinking value.
- 16Down · ▼araeLowers the blinking value.
What setting should I use?
Heating on at 60°C while home; timer 3 h when out for the day in winter; hot water H1 or H2.
How do I…?
Use floor (ondol) mode
- 1Press 난방 (round button). The heating setting blinks.
- 2Press ▲ / ▼ to 60 (range 50–80°C).
- 3Press 난방 again (or wait 10 s) to save. The 난방 lamp stays on.
Leave for a few days
- 1Press 외출. The 외출 lamp lights.
- 2The boiler only runs freeze protection. Hot water does not work in this mode.
- 3In freezing weather leave a cold/hot tap dripping (manual advice).
Run on a timer
- 1With the power on, press 타이머. The hours blink.
- 2Press ▲ / ▼ to choose 1–24 hours, then press 타이머 again.
- 3The boiler heats 30 minutes per cycle. 1–2 h: heats first; 3–24 h: pauses first.
- 4To change the 30-min run time: switch off with 전원, hold 타이머 2 s, press ▲ to cycle 30 → 45 → 60 → 15, press 타이머.
Hot water only (summer)
- 1If the 난방 lamp is on, press 난방 to turn heating off.
- 2Press 온수 so its lamp is on. Hot water works; no heating.
Change the hot-water temperature
- 1Press 온수. The level blinks: H1 (low), H2 (mid), H3 (high).
- 2Press ▲ / ▼, then 온수 again to save. H1 is enough when the flow is low.
Turn it off
- 1Press 전원.
What do the words on the screen mean?
| two-digit number | Water temp | Heating-water temperature in the pipes, not room temperature. |
|---|---|---|
| H1 / H2 / H3 | Hot water low/mid/high | Hot-water level 약 / 중 / 강. |
| E1 | No water | Heating pipes short of water — check for a water cut, then A/S. |
| E3 | Overheat | Water not circulating — open floor manifold valves, clean filter (A/S). |
| E6 | Gas leak | Gas leak detected — ventilate, call A/S. |
| display + 연소 blinking | No ignition | Check gas valve is open / gas supply. |
What trips people up on this model?
- Pressing 난방 or 온수 while it's already on turns it OFF.
- The number is pipe-water temperature; there is no room-air mode.
- 외출 also stops hot water.
- Remembers settings after a power cut; timer cycle restarts.
- Keep the boiler plugged in; it spins its pump ~5 min a day to stop it seizing.
- No 물보충 lamp: low water shows as error E1. If the 물보충 (water refill) light or code comes on, the boiler is low on heating water and will stop to protect itself. Do not open panels or valves. Message your landlord / building manager first, then call the A/S number. A light that keeps coming back usually means a leak.
It shows an error. Now what?
Codes show on the red display. E1 = no water (check water cut, then A/S); E3 = overheating (open floor manifold valves); E6 = gas leak; blinking display + 연소 = no ignition (open gas valve). Printed A/S: 1577-5161.
Service line (Korean): 1577-5161