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

 

 

Check that gas is turned ON.

11 [1]

Ignition Failure

Check that the vent termination is not blocked.

Refer to the Restart Function explanation.

 

 

 

 

Service call if repeated.

 

 

 

14

Overheat

Clean filter.

Service call if repeated. [2]

 

 

16

Room Overheat

Ensure that room temperature is less than 104°F (40°C).

 

 

 

31

Room Temperature Sensor

Service call.

32

Faulty

 

 

 

 

33

Overheat Temperature

Service call.

34

Sensor Faulty

 

 

 

 

49

Sensor Breakdown

Service call.

 

 

 

53

Sparker Failure

Service call.

 

 

 

61

Combustion Fan Failure

Service call.

 

 

 

62

Convection Fan Failure

Service call.

 

 

 

70

Faulty ON/OFF Switch or

Service call.

Faulty “Set back” Switch

 

 

 

 

 

71

Faulty Solenoids

Service call.

 

 

 

72

Faulty Flame Rod

Service call.

 

 

 

73

Communication Error

Service call.

 

 

 

99

Flue Block

Check around the flue terminal for blockage. [3]

 

 

 

[1]Only this code is dim.

[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.

[3]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.

Rinnai Corporation EX17C / EX22C Manual

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Rinnai EX17C (RHFE-434FTA), EX22C (RHFE-559FTA) installation manual Fault Codes, Code Displayed Fault Remedy

EX17C (RHFE-434FTA), EX22C (RHFE-559FTA) specifications

The Rinnai EX17C (RHFE-434FTA) and EX22C (RHFE-559FTA) are innovative wall-mounted gas heaters that provide efficient and cozy heating solutions for indoor spaces. Manufactured with advanced technology, these models are designed to meet diverse heating needs while ensuring user comfort and safety.

One of the standout features of both the EX17C and EX22C is their energy efficiency. With a high energy star rating, these heaters minimize energy consumption, making them ideal for environmentally conscious consumers. The EX17C can deliver an impressive 17 kW of heating power, while the EX22C offers up to 22 kW, accommodating various room sizes and layouts effectively.

Both models utilize Rinnai’s advanced direct vent technology. This system allows fresh air from outside to be used for combustion, ensuring optimal heating performance without depleting indoor oxygen levels. This feature not only enhances comfort but also contributes to improved indoor air quality. Additionally, the closed combustion system ensures that exhaust gases are safely vented outside, providing a safer environment for occupants.

In terms of design, the EX17C and EX22C are sleek and modern, fitting seamlessly into various interior styles. Their wall-mounted configuration saves floor space, making them suitable for smaller rooms or homes where space optimization is a priority. The adjustable heat settings enable users to customize their heating preferences according to the season or personal comfort levels.

User convenience is a core aspect of both models, which come equipped with an intuitive electronic control panel. This feature allows for easy temperature adjustments and scheduling, ensuring that optimal heat levels can be maintained without constant manual intervention. Some models also offer remote control capabilities, enhancing usability for consumers.

Safety is paramount in Rinnai's design philosophy, and the EX17C and EX22C include multiple safety features such as flame failure detection and automatic shut-off. These mechanisms ensure that any irregularities in operation are promptly addressed, providing peace of mind for homeowners.

In conclusion, the Rinnai EX17C and EX22C offer modern, energy-efficient heating solutions with advanced technology, user-friendly features, and a focus on safety. These models are ideal choices for anyone looking to enhance their indoor heating experience while maintaining energy efficiency and comfort.