Fault Codes
If there is a malfunction the appliance may shut down as a safety precaution and display a fault code to assist in diagnosing the problem. The fault code will flash in the display on the control panel. When making a service call, this code will assist with diagnosing the fault.
You may be able to clear the fault code by turning the heater off and then on again. If the fault code remains or returns on the next operation, contact Rinnai or your nearest service agent and arrange for a service call.
CODE DISPLAYED | FAULT | REMEDY | |
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| Check that gas is turned ON. | |
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| Check that the vent termination is not | |
11 | Ignition Failure | blocked. | |
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| Refer to the Restart Function explanation. | |
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| Service call if repeated. | |
14 | Overheat | Clean filter. | |
Service call if repeated. [1] | |||
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16 | Room Overheat | Lower room temperature to less than 104°F | |
(40°C). | |||
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31 | Room Temperature Sensor | Service call. | |
32 | Faulty | ||
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33 | Overheat Temperature Sensor | Service call. | |
34 | Faulty | ||
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49 | Sensor Breakdown | Service call. | |
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53 | Sparker Failure | Service call. | |
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61 | Combustion Fan Failure | Service call. | |
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70 | Faulty ON/OFF Switch | Service call. | |
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71 | Faulty Solenoids | Service call. | |
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72 | Faulty Flame Rod | Service call. | |
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73 | Communication Error | Turn heater OFF, then ON again. | |
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99 | Flue Block | Check around the flue terminal for blockage. | |
[2] | |||
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[1]Remove any obstructions. The flue needs to be kept clear to expel exhaust gases. If the appliance fails to operate contact a qualified service agency.
[2]If the fusible link needs replacement, it must be done by a qualified service agency. In addition, the cause of the overheat needs to be determined. The fusible link is a one use safety device that breaks to shut off the appliance.
12 | Rinnai Corporation ES38 Manual |
