Rinnai · Wall furnace

Economy Economy indicator lit

Normal status EX DT

What the display is showing

The Economy indicator is lit while Economy mode is active (it can be switched on only while the furnace is heating). Economy lowers the temperature by 2°F 30 minutes after the setting is reached and by another 2°F after a further 30 minutes (4°F in total). The light goes out when the furnace is turned off or stops heating on an OFF timer, and comes back when heating resumes.

Applies to: Rinnai EX08DT, EX11DT, EX17DT, EX22DT direct vent wall furnaces

Settings for these units

Clearances to combustibles and service · EX DT

LocationClearance
Top0 in. (0 mm)
Bottom / ground0 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 access10 in. (254 mm) sides; 40 in. (1 m) front; area above per figure
Exhaust extension pipe1 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

EX08DTEX11DTEX17DTEX22DTEX22DT-W

Other codes on the same units

  • 72 Flame rod failure
  • 73 Communication error
  • 99 Flue blocked
  • A1-A8 / L1-L8 Gas code selection (gas type, altitude, vent length)
  • FILTER Filter lamp flashing red (air filter blocked)
  • H Set temperature H (maximum burner output)
  • L Set temperature L (minimum burner output)
  • Lock Control panel lock indicator

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Source: Rinnai EX08DT/EX11DT Installation and Operation Manual (200000083) and EX17DT/EX22DT (200000084), Economy mode p.34-35. 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.