49
SYMPTOM | PROBLEM | TEST SOLUTION |
Carbon is being deposited on glass, logs, rocks, media or combustion chamber surfaces.
Air shutter has become | - Ensure air shutter opening is free of lint or other |
blocked. | obstructions. |
Flame is impinging on the | - Check that the glass, logs, rocks or media are |
glass, logs, rocks, media | correctly positioned. |
or combustion chamber. | - Open air shutter to increase the primary air. |
| - Check the input rate: check the manifold pressure |
| and orifice size as specified by the rating plate |
| values. |
| - Check that the door gasketing is not broken or |
| missing and that the seal is tight. |
| - Check that both vent liners are free of holes and |
| well sealed at all joints. |
| - Check that minimum rise per foot has been adhered |
| to for any horizontal venting. |
Continues to spark and pilot lights, but main burner will not light.
Short or loose | - Verify all connections. Verify the connections |
connection in sensor rod. | from the pilot assembly are tight; also verify these |
| connections are not grounding out to any metal. |
Poor flame rectification | - Verify the flame is engulfing the sensor rod. This |
or contaminated | will increase the flame rectification. Verify correct |
sensor rod. | pilot orifice is installed and inlet gas specifications |
| to manual. (Remember, the flame carries the |
| rectification current, not the gas. If the flame lifts |
| from pilot hood, the circuit is broken. A wrong orifice |
| or too high of an inlet pressure can cause the pilot |
| flame to lift.) The sensor rod may need cleaning. |
Poor grounding between | - Verify that the wire harness is firmly connected to |
pilot assembly and | module Verify that the ceramic insulator around the |
gas valve. | sensor rod is not cracked, damaged, or loose. Verify |
| the connection from the sensor rod to the sensor wire. |
Damaged pilot or dirty | - Clean sensor rod with an emery cloth to remove |
sensor rod. | any contamination that may have accumulated on |
| the sensor rod. Verify continuity with multimeter with |
| ohms set at the lowest range. |
Pilot lights | Wiring / Connection. | - Inspect all wires, ensure good tight connections. | ||
Stops sparking |
|
| Verify that all wiring is installed exactly as specified. | |
/ pilot remains lit | Wiring harness. | - Inspect the wiring harness, and verify the harness | ||
but burner will |
|
| is tightly connected to the module. Verify that all | |
not turn on. |
|
| wires are connected in the right order. See “WIRING | |
|
|
| DIAGRAM” section. | |
Exhaust fumes | Appliance is spilling. | - Check all seals. | ||
smelled in room, |
|
| - Check if exhaust is | |
headaches. |
|
| door or window. | |
|
|
|
| 42.7_2 |
|
|
|
| |
