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Troubleshooting
Water Heater Ignition Systems
WATER HEATER LOCK OUT - SPARK PRESENT BUT NO GAS |
|
| CONDITION | SOLUTION |
| Gas pressure incorrect | Set inlet pressure at a minimum 11" W.C. with two or more appliances running |
| Low voltage | Correct power supply - 10.5 VDC minimum |
| Blocked main burner tube | Clean burner tube |
| Blocked main burner orifice | Clean or replace orifice |
| Loose wires on E.C.O. | Secure wire connections |
| Loose wire connections on solenoid valve | Secure wire connections |
| Loose valve wire on wiring harness | Repair wire on edge connector or repair wiring circuit board harness |
| Defective E.C.O. | Replace E.C.O. |
| Defective circuit board | Replace circuit board |
| Defective solenoid valve | Replace coils or solenoid valve |
| No gas to solenoid valve | Correct gas supply |
| Dirty connector on circuit board | Clean edge connector |
WATER HEATER LOCK OUT - GAS PRESENT BUT NO SPARK |
|
| CONDITION | SOLUTION |
| High tension lead wire loose | Secure wire connection on circuit board |
| Electrodes loosely attached to burner | Secure electrodes to main burner |
| Improper electrode gapping | Re-position spark gap to 1/8" |
| Dirty electrodes | Clean electrodes |
| Wires loose in electrode porcelain | Replace electrode |
| Cracked porcelain on electrode | Replace electrodes |
| Defective circuit board | Replace circuit board |
WATER HEATER LOCK OUT - GAS AND SPARK PRESENT |
|
| CONDITION | SOLUTION |
| Gas pressure incorrect | Set inlet pressure at a minimum 11: W.C. with two or more gas appliances running |
| Low voltage | Correct power supply - 10.5 VDC minimum |
| Poor electrical ground | Secure electrical ground |
| Electrodes out of flame pattern | Re-adjust electrodes |
| Electrodes sparking to screw fastening burner to flue tube | Adjust electrodes |
| Dirty electrodes | Clean electrodes |
| Partial obstruction in main burner | Clean main burner |
| Partially obstructed main burner orifice | Clean main burner orifice |
| Improper air adjustment | Adjust main burner air shutter approximately ¼ open or greater |
| Flame spreader on main | Adjust flame spreader so that it is square to the end burner tube out of alignment of the main burner |
| Manifold no aligned with main burner | Re-align solenoid valve with main burner |
| Partially opening solenoid valve | Replace solenoid valve |
| Defective circuit board | Replace circuit board |
EXCESSIVE OR INSUFFICIENT WATER TEMPERATURES |
|
| CONDITION | SOLUTION |
| Bypass kit valves not set properly | Place valves in proper position |
| Thermostat not seated against tank | Reseat thermostat |
| Defective thermostat | Replace thermostat |
Submitted by Mike Sundberg - 3/17/06
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