INTELLI-VENT TROUBLESHOOTING GUIDE
Technical Training Department Ashland City, Tennessee © 2005
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INTELLI-VENT™ FEATURES
The Intelli-Vent™ is a combination control incorporating all temperature control, ignition control,
blower and ignitor control, flame sensing, and gas regulation into a single device.
Advanced Diagnostics - Error Codes
The Intelli-Vent™ features advanced diagnostics with 15 specific error codes including reversed
polarity and inadequate grounding notification. Diagnostic information is conveyed via 6 LED
lights on the control. These error codes will help diagnose and repair the water heater quickly and
accurately.
Tamper Resistant
The Intelli-Vent™ features tamper resistant temperature settings. In order to access
temperature settings both temperature adjust buttons must be pressed simultaneously for one full
second to review the temperature settings. Temperature settings are displayed by illuminating
various combinations of LED lights.
Precise Temperature Control
The Intelli-Vent™ controls temperature electronically. Tighter cut out and cut in differentials
produce less temperature swing than standard residential controls.
Temperature Probe - Thermistor
The temperature probe houses the ECO and a temperature sensor which is a “thermistor.”
Thermistors are thermally sensitive variable resistors. A change in water temperature changes
the resistance (measured in ohms) of the thermistor. The Intelli-Vent™ control interprets this
change in resistance as a change in temperature and uses this information to activate and
deactivate a call for heat.
Silicon Nitride Ignitor
The Intelli-Vent™ control uses a silicon nitride ignitor which is more durable than the silicon
carbide ignitors previously used. Body oils transferred to the ignitor during handling will not
damage silicon nitride ignitors nor will minor bumps or drops. This ignitor is also highly resistant to
damage caused by condensation.
Adaptive Learning Technology
Adaptive Learning Technology refers to the programed control of voltage to the ignitor. The Intelli-
Vent™ varies voltage to the ignitor and “learns” to use the lowest voltage necessary that insures
consistent ignition. Lower voltage increases ignitor life.
Water Resistant
While not being a “water proof” control the Intelli-Vent control does have a greater degree of
resistance to water damage than previous controls. Wiring connections are on the bottom of the
control and less susceptible to damage.
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