TROUBLESHOOTING
Continued
OBSERVED PROBLEM POSSIBLE CAUSE | REMEDY |
ODS/pilot lights but flame goes out when control knob is released
1.Control knob not fully pressed in
2.Control knob not pressed in long enough
3.Safety interlock system has been triggered
4.Equipment shutoff valve not fully open
5.Thermocouple connection loose at control valve
6.Pilot flame not touching ther- mocouple, which allows thermocouple to cool, caus- ing pilot flame to go out. This problem could be caused by one or both of the following:
A)Low gas pressure
B)Dirty or partially clogged ODS/pilot
7.Thermocouple damaged
8.Control valve damaged
1.Press in control knob fully
2.After ODS/pilot lights, keep con- trol knob pressed in 30 seconds
3.Wait one minute for safety in- terlock system to reset. Repeat ignition operation
4.Fully open equipment shutoff valve
5.Hand tighten until snug, then tighten 1/4 turn more
6.A) Contact local natural or propane/LP gas company
B)Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/pilot assembly
7.Replace pilot assembly
8.Replace control valve
Burner does not light after ODS/ | 1. Burner orifice is clogged | 1. | Clean burner (see Cleaning | |
pilot is lit |
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| and Maintenance, page 19) or |
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| replace burner orifice |
| 2. | Inlet gas pressure is too low | 2. | Contact local natural or pro- |
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| pane/LP gas company |
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Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local natural or pro- | |
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| pane/LP gas company |
| 2. | Burner orifice is clogged | 2. | Clean burner (see Cleaning |
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| and Maintenance, page 19) or |
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| replace burner orifice |
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Burner backfiring during com- | 1. Burner orifice is clogged or | 1. | Clean burner (see Cleaning | |
bustion |
| damaged |
| and Maintenance, page 19) or |
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| replace burner orifice |
| 2. | Burner damaged | 2. | Replace burner |
| 3. | Gas regulator defective | 3. | Replace gas regulator |
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