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 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
Problem | Burnerdoesn’t ignite | Unusualcombustion | Combustionstops duringoperation | Smellof gas | Noisyignition | Takestoo long to warmthe room |
ONNoindicator | ||||||
Cause |
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Not Plugged In |
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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
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
14 | Rinnai Corporation EX17C / EX22C Manual |