Error Codes

The Rinnai water heater has the ability to check its own operation continuously. If a fault occurs, an error code will flash on the display in the front panel and on the temperature controller if installed. This assists with diagnosing the fault and may enable you to overcome a problem without a service call. Please identify the code displayed when inquiring about service.

Front Panel Display Indications

- -

Standby (power is supplied but there is no demand for hot water).

On

Hot water is being supplied.

FL or FH

Stands for Forced Low and Forced High combustion. Only seen during the gas pressure

 

setting procedure which is done when certain components are replaced.

Error code flashing

The error code will stop flashing after the problem is corrected and the water heater

 

supplies hot water.

Error Code Table

Code

Fault

 

Remedy

 

 

02

No burner operation during

 

Service Call

 

 

 

freeze protection mode

 

 

 

 

03

Power interruption during

 

Turn off all hot water taps. Press ON/OFF twice.

 

 

Bath Fill (Water will not flow

 

 

 

 

 

when power returns).

 

 

 

 

10

Air Supply or Exhaust

 

(V53i only) Ensure Rinnai approved venting materials are being used.

 

 

Blockage

 

(V53i only) Check all vent components for proper connections.

 

 

 

 

(V53i only) Ensure vent length is within limits.

 

 

 

 

(V53i only) Ensure condensation collar was installed correctly.

 

 

 

 

Check that nothing is blocking the inlet or exhaust.

 

 

 

 

Verify dip switches are set properly.

 

 

 

 

 

Check fan for blockage.

 

 

11

No Ignition

 

Check that the gas is turned on at the water heater, gas meter, or cylinder.

 

 

 

 

Ensure gas type and pressure is correct.

 

 

 

 

 

Ensure gas line, meter, and/or regulator is sized properly.

 

 

 

 

Bleed all air from gas lines.

 

 

 

 

 

Verify dip switches are set properly.

 

 

 

 

 

Ensure appliance is properly grounded.

 

 

 

 

 

Disconnect EZConnect™ or MSA controls to isolate the problem.

 

 

 

 

Ensure igniter is operational.

 

 

 

 

 

Check igniter wiring harness for damage.

 

 

 

 

 

Check gas solenoid valves for open or short circuits.

 

 

 

 

Remove burner cover and ensure all burners are properly seated.

 

 

 

 

Remove burner plate and inspect burner surface for condensation or debris.

 

12

Flame Failure

 

Check that the gas is turned on at the water

Disconnect EZConnect™ or MSA controls

 

 

 

heater and gas meter. Check for

to isolate the problem.

 

 

 

 

obstructions in the flue outlet.

Check power supply for loose connections.

 

 

 

Ensure gas line, meter, and/or regulator is

Check power supply for proper voltage and

 

 

 

sized properly.

voltage drops.

 

 

 

 

Ensure gas type and pressure is correct.

Ensure flame rod wire is connected.

 

 

 

 

Bleed all air from gas lines.

Check flame rod for carbon build-up.

 

 

 

 

Ensure proper Rinnai venting material was

Disconnect and reconnect all wiring

 

 

 

 

installed.

harnesses on unit and PC board.

 

 

 

 

Ensure condensation collar was installed

Check for DC shorts at components.

 

 

 

 

properly.

Check gas solenoid valves for open or short

 

 

 

Ensure vent length is within limits.

circuits.

 

 

 

 

Verify dip switches are set properly.

Remove burner plate and inspect burner

 

 

 

 

Ensure appliance is properly grounded.

surface for condensation or debris.

 

 

 

 

Disconnect keypad.

Check the ground wire for the PC board.

 

 

 

 

 

 

 

 

V53i & V53e Operation and Installation Manual

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Rinnai V53I, V53E installation manual Error Codes, Code Fault Remedy

V53I, V53E specifications

When it comes to reliable and efficient tankless water heaters, Rinnai stands out with its exceptional models, the V53I and V53E. These units are designed to provide a continuous supply of hot water, making them ideal for a variety of applications, from residential homes to small commercial settings.

The Rinnai V53I is an indoor model that boasts advanced technology and a compact design. Its main feature is the ability to deliver up to 5.3 gallons of hot water per minute, depending on the inlet water temperature, which ensures that households can enjoy multiple hot water outlets simultaneously without the fear of running out. The unit employs advanced energy efficiency standards, which can lead to increased savings on energy bills. Additionally, it comes equipped with the Rinnai Circ-Logic technology, enabling users to set recirculation patterns that ensure hot water is readily available when needed.

On the other hand, the Rinnai V53E is engineered for outdoor installation, with weatherproof capabilities that make it resilient against the elements. Just like the V53I, it produces up to 5.3 gallons per minute, ensuring ample hot water supply. Both models are equipped with a patented heat exchanger system, designed for optimal performance and performance longevity. This means that users can rely on consistent hot water production over the lifetime of the unit.

One of the standout characteristics of these models is their compact design, making them easy to install even in tight spaces. Rinnai’s tankless technology eliminates the need for bulky storage tanks, allowing for more functional residential and commercial space. The durability and reliability of both models are further reinforced by a commercial-grade heat exchanger that can withstand high-demand situations.

From a safety perspective, both the V53I and V53E include multiple safety features, such as freeze protection and a range of venting options, providing peace of mind to users. Rinnai also emphasizes sustainability, with their units promoting reduced energy consumption and emissions compared to traditional water heating systems.

In summary, the Rinnai V53I and V53E models offer advanced technology, efficient performance, and user-friendly characteristics. Whether indoors or outdoors, these tankless water heaters are designed to meet the demands of modern living while contributing to energy savings and environmental sustainability. With Rinnai’s reputation for quality and reliability, homeowners and business owners alike can trust these models to deliver uninterrupted hot water, season after season.