I Series Solo Installation Manual

100
Rinnai I-Series Condensing Boiler Solo Manual
Flame Failure
 Boiler has ame failure.
 Check that the gas is turned on at the
boiler, gas meter, and/or propane
cylinder.
 If the unit is installed in a propane
system, ensure that gas is in the tank.
 Ensure the venng is installed in
accordance to this manual.
 Ensure the ame rod wire is connected.
 Ensure the gas type and inlet gas
pressure are correct.
 Bleed all air from the gas lines.
 Check the ground wire to the PC Board.
 Check ame rod voltage to ground
during ignion.
Heat Exchanger Overheat
 Overheat switch is tripped.
 Measure the resistance of the Overheat
Switch.*
 Check the heat exchanger surface for
hot spots which may indicate blockage
due to scale buildup.
 Ensure the boiler pump is not locked up.
 Ensure that all of the valves in the CH
circuit are open.
 Ensure the boiler and CH circuit does not
have a freezing condion.
 The surface of the heat exchanger may
turn to a black color as stainless steel is
tempered even in normal condions.
This does not indicate an abnormal
condion.
 Check for damage on the exhaust, seal,
and venng.
Venturi Control
 Venturi operaon error.
 Ensure the venturi motor is operang
correctly.*
 Replace the gas valve assembly.
Venturi Blockage
 Check the venturi and silencer for
blockage.
 Before reseng this error, check if the
condensate drain is block and if the
venng is connected properly.
* See “Electrical Diagnoscs” on Technical Data
Sheet located on inside front cover of boiler.
Indirect Tank Temperature
• Indirect tank runs for more than six hours
without cycling o.
• Ensure the tank size is adequate.
• Check the thermistor locaon.
• Ensure the system is plumbed properly.
• Check the supply temperature for tank is
higher than tank seng temperature
(Parameter 30).
• Check sensor wiring for damage.
• Measure resistance of sensor.*
• Replace sensor if necessary.
Electrical Grounding
 Secondary circuit ground fault.
 Check all electrical components for
electrical short.
Condensate Pump (Accessory)
 Boiler will operate for 60 seconds.
 Conrm wire connecons and harnesses
are good.
 Ensure the condensate reservoir is
empty and condensate pump is
operaonal.
Freeze Protecon Thermistor
 Check sensor wiring for damage.
 Measure the resistance of the sensor.
 Replace if necessary.
Supply Thermistor
 Check sensor wiring for damage.
 Clean the surface of the sensor.
 Measure the resistance of the sensor.
 Check the return thermistor.
 Replace if necessary.
Indirect Tank Thermistor
 Ensure DIP switch 4 is set to the
appropriate seng.
 Check sensor wiring for damage.
 Measure the resistance of the sensor.
 Replace if necessary.
Exhaust Thermistor
 Check sensor wiring for damage.
 Clean the surface of the sensor.
 Measure the resistance of the sensor.
 Check the return thermistor.
 Replace if necessary.