Rinnai RS100 Training Program page 40

Condensing boiler controller

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Troubleshooting

• When troubleshooting with an RS100, consider the following:

• Jumping the thermostat terminals (22 and 23) to force the boiler to fire will do nothing unless the RS100

is disconnected from 20 and 21

• If the RS100 is not set for RC, the room conditions will not influence the boiler

• If the RS100 is set for RC, outside temperature will not influence the boiler except for freezing or summer

setback conditions

• If max temp at the boiler is lower than the max temp at the RS100, the boiler's value will have

precedence

• If there is a complaint of lack of heating or too much heat (heating or DHW mode)

• First, ensure the boiler functions correctly without an RS100 and there are no system issues

• If there is a diverter valve on the boiler, ensure it is in the right position and functioning correctly

• Ensure clock settings are correct (including the temp) and heating when needed

• Ensure the RS100 is not physically located in an environment that could cause it to report invalidly (if

in RC mode only)

• Ensure vacation, absent, setback, or standby modes aren't selected (lack of heating)

• Ensure boiler max and min temps are correct

• Ensure DHW settings are correct

• Ensure UC Para 1 is set to RED (lack of heating)

• Ensure party mode isn't engaged (too much heat)

• If needed, validate all parameters-reset to factory defaults if needed (make sure system unique

parameters are then reset)

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