TROUBLESHOOTING
21
TROUBLESHOOTING
Note: For additional help, visit DESA’s Technical Service web site at www.desatech.com.
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 valve is OFF | 1. | Check to see if you have gas supply |
| 2. | Air in gas line | 2. | Hold regulator control valve in the PILOT |
|
|
|
| position for 2 to 3 minutes to purge air. If |
|
|
|
| you smell gas stop and wait for a few min- |
|
|
|
| utes before trying to light the fireplace |
| 3. | Construction debris clogging pilot orifice | 3. | Remove debris and dirt, inspect and |
|
|
|
| clean any other possible obstructions |
| 4. | Low gas pressure | 4. | Contact your gas supplier |
| 5. | Control valve knob is not on the PILOT | 5. | Refer to section on pilot lighting |
|
| position |
|
|
| 6. | Kinked pilot line | 6. | Have a qualified technician replace pi- |
|
|
|
| lot line |
| 7. | Bad valve | 7. | Replace regulator valve (see Accesso- |
|
|
|
| ries, page 29) |
| 8. | Vent damper not fully open | 8. | Open vent damper until fully locked in |
|
|
|
| OPEN position |
|
|
|
|
|
Pilot will not stay lit | 1. | Loose wiring on thermopile to regula- | 1. | Check wiring connections. Refer to wir- |
|
| tor valve. No millivolt current is being |
| ing diagram shown in Wall Switch In- |
|
| sent back to regulator |
| stallation, page 11 |
| 2. | If valve knob and wall switch are in the | 2. | Have a qualified technician replace valve |
|
| ON position, probable defective regula- |
|
|
|
| tor valve |
|
|
| 3. | Vent damper not fully open | 3. | Open vent damper until fully locked in |
|
|
|
| OPEN position |
|
|
|
|
|
No gas to burner, although wall switch and | 1. | Wall switch wires defective or too long | 1. | Check electrical connections |
valve are set to the ON position | 2. | Thermopile not generating sufficient | 2. | See Pilot will not stay lit, above |
|
| voltage |
|
|
|
|
|
|
|
Frequent pilot outage | 1. | Pilot flame may be too low, causing | 1. | Clean and adjust pilot flame for maximum |
|
| safety pilot to “drop out” |
| flame impingement on thermopile |
| 2. | Improper venting or excessive blockage | 2. | Have the vent system inspected, includ- |
|
|
|
| ing the termination cap. Remove any |
|
|
|
| restriction or obstruction |
For more information, visit www.desatech.com
