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Troubleshooting
Nova SIT 820 Standing Pilot
START
Gas Supply
On
Yes
Gas Supply
On
Yes
Pilot Stays
Lit
Yes
Pilot Lights
Main Burner
Yes
System OK
No
No
No
No
CHECK
Gas supply
connected
Shut off valve open
Lockout has engaged.
Wait 60 seconds and try
again.
Piezo not tight enough
for good ground.
For spark at electrode
while depressing Piezo
1/8" gap to pilot hood
required.
All wiring connections.
Replace Piezo ignitor.
Thermodisk.
Air in gas pipe.
Thermopile requires a
min of 325Mv. Adjust
pilot flame height.
All wiring connections.
Replace thermopile.
Thermocouple needs a
min of 14mV
Defective valve. Turn to
pilot, meter should read
greater than 100Mv.
Thermodisk.
Faulty gas valve.
Thermopile requires
min of 325mV
Watch for grounded
wires.
Blocked burner
injector.
Page 14 of 18
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