Restart Function; Troubleshooting - Rinnai EX22CT Installation And Operation Manual

Restart Function

If there is a power failure while the appliance is on, then the appliance will start 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 15-18 seconds before 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.

Troubleshooting

No ON
Issue
Indicator
Not Plugged in
Power Failure
(Initial Installation) Air
in Gas Pipe
Gas Filter Blocked
Missed Ignition
Flue Terminal
Obstructed
Flue Manifold not
connected
Louver Obstructed
Air Filter Blocked
Gas Escape
Child Lock Set
Gas Off at Meter,
Tank, or Valve
ON Timer is set
No Display
No
Abnormal
Burner
Combustion Combustion
Ignition
Rinnai Corporation EX17CT, EX22CT Manual
Loss of Smell Noisy
of Gas Ignition
Takes to Long
Remedy
to Warm Room
Plug in
Restart Unit
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
33