| Symptom |
| Possible Causes | Corrective Actions |
4. | Pilot sparks, but pilot will | A. | Correct gas supply. | Verify that incoming gas line ball valve is “open”. Verify that inlet pressure |
| not light. |
|
| reading is within acceptable limits, inlet pressure must not exceed 14 in. w.c. |
|
| B. | Ignitor gap is too large. | Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in. |
|
|
|
|
|
|
| C. | Module is not grounded. | Verify module is securely grounded to metal chassis of appliance. |
|
| D. | Module voltage output/ | Replace module. |
|
|
| valve/pilot solenoid ohms |
|
|
|
| readings. |
|
36 | Heatilator • GB4336/GB4992 • |
