TROUBLESHOOTING
ELECTRONIC IGNITION SYSTEM
Note: Before troubleshooting the system, make sure the gas shutoff valve is ON. The two most common causes of a malfunctioning gas appliance are:
1.Loose wiring connections
2.Construction debris clogging the pilot and/or gas control valve filter
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
Pilot will not light | 1. No gas supply or shutoff | 1. | Check to see if you have gas | |
|
| valve is OFF |
| supply |
| 2. | Construction debris clog- | 2. | Remove debris and dirt, in- |
|
| ging pilot orifice |
| spect and clean any other |
| 3. | Low gas pressure |
| possible obstructions |
| 3. | Contact your gas supplier | ||
| 4. | Control valve knob is not on | 4. | Refer to section on pilot |
|
| the PILOT position |
| lighting |
| 5. | Kinked pilot line | 5. | Have a qualified technician |
| 6. | Bad valve |
| replace pilot line |
| 6. | Replace control valve (see | ||
|
|
|
| Replacement Parts and Acces- |
|
|
|
| sories, page 19) |
Pilot will not stay lit | 1. | Loose wiring on thermopile |
|
| to regulator valve. No mil- |
|
| livolt current is being sent |
|
| back to regulator |
| 2. | If valve knob and wall switch |
|
| are in the ON position, prob- |
|
| able defective control valve |
1.Check wiring connections. Refer to wiring diagrams on page 16
2.Have a qualified technician replace valve (see Replace- ment Parts and Accessories, page 19)
No gas to burner, although wall switch and valve are set to the ON position
1.Wall switch wires defective
2.Thermocouple generator or sensor not generating suf- ficient voltage
1.Check electrical connections and wires for continuity
2.See Pilot will not stay lit, above
Frequent pilot outage | 1. Pilot flame may be too |
| low, causing safety pilot to |
| “drop out” |
1.Clean and adjust pilot flame for maximum flame impinge- ment on thermopile
Pilot goes out when wall switch is ON
1. Output on flame sensor too 1. Replace flame sensor high
18 | www.desatech.com |
