HVACopediaRinnai wall furnace error codes
19 codes with causes and test steps, plus 1 settings tables.
| Code | Meaning | Severity |
|---|---|---|
| 11 | No ignition | High |
| 14 | Overheat (fusible link) | Critical |
| 16 | Room overheat (above 104°F / 40°C) | Medium |
| 30 | Overheat temperature thermistor 2 open circuit | Medium |
| 31 | Room temperature thermistor open circuit | Medium |
| 32 | Room temperature thermistor short circuit | Medium |
| 33 | Overheat thermistor 1 open circuit | Medium |
| 34 | Overheat thermistor 1 short circuit | Medium |
| 35 | Overheat temperature thermistor 2 short circuit | Medium |
| 40 | Pressure sensor sensing tube failure | Medium |
| 49 | Pressure sensor breakdown | Medium |
| 53 | Abnormal spark sensed | Medium |
| 61 | Combustion fan fault | Medium |
| 62 | Convection fan fault | Medium |
| 70 | ON/OFF or Set Back switch fault | Medium |
| 71 | Solenoid valve failure | Medium |
| 72 | Flame rod failure | Medium |
| 73 | Communication error | Medium |
| 99 | Flue blocked | Critical |
Settings and specs
Clearances to combustibles and service
Clearances · 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.
Source: Rinnai EX08DT and EX11DT Installation and Operation Manual (200000083) Table 6 Clearance to Combustibles p.14; Rinnai EX17DT and EX22DT Installation and Operation Manual (200000084) Table 6 p.14
Models covered
EX08DTEX11DTEX17DTEX22DTEX22DT-W
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.