Rheem Guardian PowerVent - Page 51

Guardian PowerVent Training Manual SVC900; Rev 1
Page 50
Error 15
Indications Display
The control detected the presence of
flammable vapors near the water heater and
entered lock out.
This is a permanent lockout and cannot be
cleared by cycling power. Control may be
reset.
Troubleshooting
1. Disconnect the FV sensor Molex and measure the resistance of the FV sensor between
the two black wires 2 and 3.
2.
3. Write down this resistance and call the technical support line at 800-432-8373 for further
instructions.
4. The control is field resettable; however, we probably need to replace the FV sensor first.
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