Component Testing Procedures - Viking VGSU103 Service Manual

To avoid risk of electrical shock, personal injury, or death; disconnect power and shut off gas to unit before
servicing, unless testing requires power.
Illustration
© Viking Range Corporation
Component
Spark module
Gas Valve
Sealed Burner Base
Pressure Regulator
Micro Switch Harness
SMC-0002

Component Testing Procedures

Test Procedure
Test for voltage at Line
and Neutral........................
Polarity...............................
Verify gas is supplied
Adjust set screw for low
flame
Verify gas is supplied.........
Verify igniter function..........
Verify burner cap is
positioned correctly
Verify gas pressure............
If on LP service, verify
proper gas supply
conversion
Verify proper conversion (if
on LP)
Test for continuity in all
positions.............................
Results
• 120 VAC
• If the Line and Neutral
connections to the
igniter are reversed, the
sensitivity is reduced;
and the unit may not
sense a flame. As a
result, sparking may
occur when a flame is
present.
• Check for obstructions
in burner ports
• Test continuity across
spark lead and
igniter. Ensure infinite
resistance from igniter
to burner base.
• 5" WCP for natural
10" WCP for LP
• Switch should read
continuity in all
positions except for
OFF (infinite resistance)
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