Rinnai E- Series Troubleshooting Manual page 18

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WARNING: Turn off power and water supply to the boiler before removing or installing any parts.
Boiler has not been
burning but an
ionization flow
(flame) has been
detected.
Check whether the ionization cable and/or the electrode
are responsible for a short circuit. Remove the plugs from
the ionization cable connected to the control unit and to
the electrode. Now using a ohm meter take a
measurement between the ionization connection and the
ground. Now refit it part by part until a short circuit takes
place.
18
NOTE: Inadvertently unplugging the ionization
cable or spark igniter wire while the boiler is
not firing can trigger the E00 code.
008082013GW

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