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Rinnai Hot Water Error Codes

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Rinnai Hot Water Error Codes & Remedies

Rinnai hot water systems

Rinnai Hot Waster Units are among the most advanced systems. They are made of superior quality materials and have the advanced Rinnai Error Code that make it relevant to be popular throughout Australia. One of the advanced Rinnai Error Code that come with any Rinnai unit is the temperature controller. It works in allowing you to set the temperature of outgoing hot water and to identify any error due to malfunction.

In fact, Rinnai hot water system is capable to identify its own operation continuously. If a fault is observed, an error code will be displayed on the Rinnai temperature controller pad. This error codes help to diagnose the fault and may assist you to overcome a problem without even making a service call.

But this might not be the case every time! There are certain situations where your Rinnai unit needs a qualified plumber to get it fix. Call Sydney Plumbing Hot Water And Gas on 0402 487 444, and our Rinnai expert will come to your location on the same day to fix your hot water unit.

We have put together a detailed list of Rinnai error codes, its description, and remedy to aid you to diagnose and probably identify any issues your unit may have!

Rinnai Error Code Description Error Code Remedy
03 Power disturbance during Bath Fill ( Water does not flow when power returns) First, turn off all the hot water taps and then press ON & Off button for twice.
10 Air Supply, Flue or Exhaust Blockage Inspect that nothing is blocking the exhaust or flue inlet.

Make sure Rinnai approved venting materials are used.

Verify any fan blockage.

Check all vent components for accurate connections.
11 Indicating No Ignition Make sure the gas pressure is correct.

Ensure the igniter is functional.

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

Check whether the dip switches are properly set.
12 Low gas flow rate/ Flame Failure Make sure that the gas is turned on at the gas meter and water heater. Inspect for obstructions in the exhaust.

Disconnect the keypad.

Make sure there is enough power supply for proper voltage.

Take off the burner plate and check the burner surface for debris or condensation.
14 Overheating/ Flame Failure Make sure the gas type of unit matches the type of gas being used.

Inspect the heat exchanger for any cracks.

Measure the resistance of safety circuit.
16 Over Temperature Warning See for foreign materials in exhaust piping and/to the combustion chamber.

Identify the blockage in airflow around unit and vent terminal.

Identify a clogged heat exchanger.
19 Problem in Electrical Grounding Check all the components of the hot water unit for an electric short.
25 Blocked Condensate Pipe Inspect that the condensate pipe is not blocked and is in a working condition.
31 Error in Burner Sensor Replace sensor.

Measure the resistance power of the sensor.
32 Fault in Outgoing Water Temperature Sensor Check sensor wiring for the damage.

Clean sensor of scale build-up.

Check the sensor resistance power
33 Heat Exchanger Outgoing Sensor error Check the sensor wires and detect a fault.

Replace the sensor.
34 Combustion air temperature sensor malfunction Make sure unit’s fan blade is tight on motor shaft and is in working condition.

Check for restrictions in airflow around the unit and vent terminal.

Inspect the sensor wire damage.
41 Freeze Protection Sensor Turn the hot water tap On & Off with pressing the On/Off button on the system monitor.
51 Inlet Water Temperature Sensor Check the sensor wiring harness for loose connections.

Remove the temperature sensor from the unit and inspect any scale build up.

Check the resistance reading of the sensor.

Replace the sensor
52 Modulating Solenoid Valve Signal Error Measure the resistance power of motor winding.

Inspect modulating gas solenoid valve wiring harness for damaged terminals.
57 Burner Overheat Bi-Metal Switch Failure Check the power point of the unit working accurately.

Check the gas supply working correctly.

Turn the hot water tap On & Off.
58 Secondary Heat Exchanger Sensor Error Inspect the system for loose connections.

Flush the system and remove the accumulated scale build-up.

Check the high voltage wiring.
61 Combustion Fan Motor malfunction Check wiring harness to motor for damaged and/or loose connections.

Ensure fan will turn freely.
65 Error in Water Flow Control Contact a licensed contractor to service the hot water appliance.
70 Fault within the system PC Board Any problem in relation to the PC Board needs a qualified plumber to fix it.
71 Solenoid Valve Circuit fault Inspect the resistance power of each solenoid valve coil.

Check the wiring harness of all solenoid for loose connections.
72 Flame Sensing Device Error Replace the flame rod.

Make sure the flame rod is contacting the flame when unit fires.

Remove flame rod and check for carbon build-up. If found then clean it with sand paper.
73 Fault in Burner Sensor Circuit Change the sensor.

Inspect sensor wiring and PC board for loose connection.
79 Water Leak detection Turn the hot water tap Off & On.
Simultaneously push On & Off the status monitor.

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