WV4460E POWER VENT WATER HEATER CONTROLS
69-1872EF—01 10
Fig. 9. Troubleshooting without status LED.
Seven Flash,
three second
pause
Flammable Vapor Sensor Lockout WARNING: EXPOSION HAZARD
• Indicates gasoline vapors were detected at potentially
explosive levels.
• Verify no gasoline vapors are still present.
• Reset the control by cycling power to the appliance or
by cycling the ON/OFF switch.
• Replace the Flammable Vapor Sensor element if a
gasoline spill event occurred.
Eight-One
Flash, three
second pause
FVS Fault Detected • Verify Flammable Vapor Sensor (FVS) resistance is
not below 2.5 K .
• Check wiring to FVS and insure it is not shorted.
• Replace control if everything above checks out OK.
Eight-Two
Flash, three
second pause
Temperature Sensor Fault Detected • Verify wiring to Thermal Well is not damaged or
broken.
• Verify both sensors in the Thermal Well measure
within 500 's of each other (center terminal is
common) and that their values are in the range of 3
K to 30 K .
Eight-Three
Flash, three
second pause
Electronics Fault Detected • Verify control is not wet or physically damaged.
• Reset control on ON/OFF switch.
• Replace electronics module If 8-3 error persists.
Eight-Four
Flash, three
second pause
Valve Fault Detected • Verify valve is not wet or physically damaged.
• Reset control on ON/OFF switch.
• Replace gas control if 8-4 error persists.
Green LED
Status Indicates Check/Repair
SLIDE SWITCH TO THE ON POSITION,
TURN THE SET KNOB TO HOT;
INDUCER SHOULD START
CHECK:
TANK TEMPERATURE IS AT OR CLOSE TO HOT SET POINT
WIRING OF LINE VOLTAGE SUPPLY
INDUCER WIRING, INCLUDING L2 RETURN
TEMPERATURE SENSOR AND FLAMMABLE VAPOR
SENSOR AND THEIR CONNECTIONS
PILOT VALVE SHOULD OPEN AND
IGNITION SOURCE SHOULD START
SPARKING UNTIL PILOT FLAME IS LIT
YES
NO
YES
NO
YES
NO
YES
NO
CHECK:
INLET PRESSURE
MAKE SURE AIR IS BLED OUT OF SYSTEM
CLOGGED PILOT ORIFICE
GAS LEAK IN PILOT TUBING CONNECTIONS
WIRING TO THE FLAME/SPARK ELECTRODE
FLAME/SPARK ELECTRODE IS IN THE CORRECT
POSITION RELATIVE TO THE PILOT BURNER
CHECK:
PRESSURE SWITCH INCLUDING WIRING
PRESSURE SWITCH SHOULD CLOSE
CHECK:
INLET PRESSURE
MAIN VALVE SHOULD OPEN AND
MAIN FLAME SHOULD BE LIT BY
PILOT FLAME
SYSTEM OK
M24117B
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