Troubleshooting (continued)
Symptom | Possible Cause | Corrective Action |
|
|
|
|
|
| A. A shorted or loose connection in flame | Verify all connections to wiring diagram in manual. Verify |
|
4. Pilot lights but contin- | sensing rod. | connections underneath pilot assembly are tight. Verify |
|
ues to spark, and main |
| flame sense or igniter wires are not grounding out to metal |
|
burner will not ignite. |
| chassis, pilot burner, pilot enclosure or screen if present, or |
|
(If the pilot continues |
| any other metal object. |
|
to spark after the |
|
|
|
B. Poor flame rectification or contaminated | With fixed glass assembly in place, verify that flame is en- |
| |
pilot flame has been lit, |
| ||
flame sensing rod. | gulfing flame sensing rod on left side of pilot hood. Flame |
| |
flame rectification has |
| ||
| sensing rod should glow shortly after ignition. With a multi- |
| |
not occurred.) |
|
| |
| meter, verify that current in series between module and |
| |
|
|
| |
|
| sense lead is at least 0.14 microamps. Verify correct pilot |
|
|
| orifice is installed and gas inlet is set to pressure specifi- | |
|
| cations. Polish flame sensing rod with fine steel wool to | |
|
| remove any contaminants that may have accumulated on |
|
|
| flame sensing rod. |
|
|
|
|
|
| C. Module is not grounded. | Verify module is securely grounded to metal chassis of ap- |
|
|
| pliance. Verify that wire harness is firmly connected to the |
|
|
| module. |
|
|
|
|
|
| D. Damaged pilot assembly or contami- | Verify that ceramic insulator around the flame sensing rod |
|
| nated flame sensing rod. | is not cracked, damaged, or loose. Verify connection from |
|
|
| flame sensing rod to white sensor wire. Polish flame sens- | |
|
| ing rod with fine steel wool to remove any contaminants | |
|
| that may have accumulated on flame sensing rod. Verify |
|
|
| continuity with a |
|
|
| Replace pilot if any damage is detected. |
|
|
|
|
|
58 | Heat & Glo • |