NVC Series
Troubleshooting
Honeywell VS8421
Remove glass door before service work
START
Gas Supply On
YES
Pilot Lights With Piezo Ignitor
YES
Pilot Stays Lit
YES
Pilot Lights Main Burner
YES
|
|
| CHECK | |||
|
|
|
|
|
|
|
| NO |
| • | Supply Line Hooked Up | ||
|
|
|
| • | Shutoff Valve Open | |
|
|
|
|
|
| |
|
|
|
|
|
| |
|
|
|
| • Lockout Has Engaged. Wait 60 |
| |
|
|
|
|
| Seconds And Try Again. |
|
|
|
|
| • For Spark At Electrode While |
| |
| NO |
|
|
| Depressing Piezo |
|
|
|
|
| 1/8" Gap To Pilot Hood Needed. |
| |
|
|
|
|
|
| |
|
|
|
| • | All Wiring Connections |
|
|
|
|
| • | Replace Piezo Ignitor |
|
|
|
|
|
|
| |
|
|
|
|
| ||
|
|
|
| • For Air In The Lines |
| |
|
|
|
| • Thermopile Needs A Min. |
| |
|
|
|
|
| 325mv. Adjust Pilot Flame |
|
|
|
|
|
| Height. |
|
| NO |
|
| • | All Wiring Connections |
|
|
|
| • | Replace Thermopile |
| |
|
|
|
|
| ||
|
|
|
| • Thermocouple Needs A Min. Of |
| |
|
|
|
|
| 14mv |
|
|
|
|
| • Defective Valve. Turn To Pilot, |
| |
|
|
|
|
| Meter Should Read Greater |
|
|
|
|
|
| Than 100mv. If Not, Replace. |
|
|
|
|
|
|
| |
|
|
|
|
| ||
|
|
|
| • Valve Is Turned On |
| |
|
|
|
| • Wall Switch Is Not Turned On. |
| |
| NO |
|
|
| Watch For Grounded Wires! |
|
|
|
| • Thermopile Needs A Min. 325mv. |
| ||
|
|
|
|
| ||
|
|
|
| • | Plugged Burner Orifice |
|
|
|
|
|
|
|
|
System Ok
16 | 20000194 |
