LHE Series Natural Vent Insert
Troubleshooting the Gas Control System
START
Gas Supply On
YES
Honeywell Millivolt Valve
|
|
| CHECK |
NO |
|
| Supply Line Hooked Up |
| |||
|
|
| Shutoff Valve Open |
Pilot Lights With Piezo Ignitor
NO 
Lockout Has Engaged. Wait
60 Seconds And Try Again.
For Spark At Electrode While
Depressing Piezo — 1/8" Gap To
Pilot Hood Needed.
All Wiring Connections
Replace Piezo Ignitor
YES
Pilot Stays Lit
YES
Pilot Lights Main Burner
YES
NO 
NO 
For Air In The Lines Thermopile Needs A Minimum 325mv. Adjust Pilot Flame Height. All Wiring Connections.
Replace Thermopile Thermocouple Needs A Minimum of 14mv.
Defective Valve. Turn To Pilot, Meter Should Read Greater Than 100 Mv. If Not, Replace.
Valve Is Turned On
On/off Switch Is Not Turned On. Watch For Grounded Wires! Thermopile Needs A Minimum 325mv.
Plugged Burner Orifice.
System OK.
16 | 10005360 |
