Rinnai E- Series Troubleshooting Manual page 20

WARNING: Turn off power and water supply to the boiler before removing or installing any parts. If checking
gas pressures you MUST be qualified gas technician to service the gas system on this appliance.
Ignition Failure Issue
Due to insufficient
ionization the burner
has shut down after
ignition
The minimum ionization current
should be 4 micro amps (Check
INFO step 48, the O2 should be a
minimum of 4.4% for NG or 4.8%
for LP.
Note: if ionization is lost while the flame is
burning no E02 will occur - unit will attempt to
relight 6 times. E02 only occurs after 6 failed
attempts for re-ignition.
Propane gas with low BTU value or a brand
new tank that may contain something other
20
than pure propane may cause E02. Check
against a good known source of gas.
Flame Failure Issue
Ionization flow,
ionization cable or
02 setting
008082013GW