HVACopediaRinnai · Wall furnace
ON lamp red ON indicator red (burner lit)
What the display is showing
The ON indicator turns red when the burner has ignited and the spark stops. Normal heating operation. A lit ON indicator with flashing fault code 11 means the burner failed to light.
Applies to: Rinnai EX08DT, EX11DT, EX17DT, EX22DT direct vent wall furnaces
Settings for these units
Clearances to combustibles and service · EX DT
| Location | Clearance |
|---|---|
| Top | 0 in. (0 mm) |
| Bottom / ground | 0 in. (0 mm) |
| Front (panel) | 40 in. (1 m) - flooring or carpet under 1.2 in. (30 mm) high not included |
| Back (including back spacer) | 0 in. (0 mm) |
| Sides (left and right) | 2 in. (50 mm) |
| Service access | 10 in. (254 mm) sides; 40 in. (1 m) front; area above per figure |
| Exhaust extension pipe | 1 in. (25.4 mm) to combustibles; 0 in. to non-combustibles |
Rinnai recommends 10 in. (254 mm) at top and both sides for servicing.
Service clearance figure above the unit: 10 in. (254 mm) on EX08DT/EX11DT, 9 in. (229 mm) on EX17DT/EX22DT.
Models that show this code
5 models in EX DT
Other codes on the same units
- H Set temperature H (maximum burner output)
- L Set temperature L (minimum burner output)
- Lock Control panel lock indicator
- ON lamp green ON indicator green (powered, burner not lit)
- PH High-fire gas pressure setting mode
- PL Low-fire gas pressure setting mode
- Set / Room temp Display: set temperature and room temperature
- Set back Set back indicator lit (frost protection on)
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Source: Rinnai EX08DT/EX11DT Installation and Operation Manual (200000083) and EX17DT/EX22DT (200000084), 5.1 Control panel p.30; Operating instructions p.29. Summarized in our own words; check the original manual for your model.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.