Restart Function; Troubleshooting - Rinnai Energysaver ES38 Owner's Operation And Installation Manual

Restart Function

If there is a power failure while the appliance is on, then the appliance wills tart automatically when the power is
restored.
If the appliance fails to ignite, the appliance will attempt ignition after 1 hour. The "Ignition Failure" fault code, 11,
will appear during that hour and disappears after a successful ignition. If ignition fails again, then the fault code
will remain and another attempt to ignite will occur in 1 hour. The fault code is not stored in the fault code history.
If the flame is extinguished during forced combustion then the appliance will attempt ignition after 1 hour. The
"Ignition Failure" fault code, 11, will appear during that hour and disappears after a successful ignition. Forced
combustion takes place for about 15 seconds after ignition. After this time, the temperature control logic controls
the combustion.
If the flame is extinguished (burner combustion failure) while the temperature control logic is operating the
appliance, then the appliance will immediately attempt ignition. No fault code will appear.
In summary, if the ignition fails or the flame is extinguished during forced combustion then the appliance will
attempt to restart after 1 hour. If the flame is extinguished after this period then the appliance will immediately
attempt ignition.

Troubleshooting

Problem
Cause
Not Plugged In
Power Failure
(Initial Installation)
Air In Gas Pipe
Gas Filter Blocked
Miss Ignition
Flue terminal obstructed
Flue manifold not connected
Louver obstructed
Air filter blocked
Gas Escape
Child Lock Set
Gas turned off at meter, tank,
or valve.
ON Timer is set
14 Rinnai Corporation ES38 Manual
Remedy
Plug In
Push On/Off button to attempt
restart after power is restored.
Purge air
(Installer)
Service Call
Service Call
Clear obstruction
Service Call
Clear obstruction
Clean filter
Service Call
Cancel Child Lock
Turn gas on
Cancel "ON" Timer or push
override button