28
TROUBLESHOOTING
TROUBLESHOOTING
WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.
Note: All troubleshooting items are listed in order of operation.
CAUTION: Never use a wire, needle or similar object to clean pilot. This can damage pilot unit.
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | |||
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When ignitor button is pressed, there is no | 1. | Ignitor electrode not connected to ignitor | 1. | Reconnect ignitor cable |
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spark at pilot |
| cable |
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| 2. | Ignitor cable pinched or wet | 2. | Free ignitor cable if pinched by any | |
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| metal or tubing. Keep ignitor cable dry | |
| 3. | Piezo ignitor nut is loose | 3. | Tighten nut holding piezo ignitor. Nut is | |
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| located behind the mounting bracket | |
| 4. | Broken ignitor cable | 4. | Replace ignitor cable | |
| 5. | Bad piezo ignitor | 5. | Replace piezo ignitor | |
| 6. | Ignitor electrode broken | 6. | Replace pilot assembly | |
| 7. | Ignitor electrode positioned wrong | 7. | Tighten electrode. Replace if necessary | |
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When ignitor button is pressed, there is spark | 1. | Gas supply turned off or equipment | 1. | Turn on gas supply or open equipment | |
at pilot but no ignition |
| shutoff valve closed |
| shutoff valve | |
| 2. | Gas control knob not in PILOT position | 2. | Turn gas control knob to PILOT position | |
| 3. | Gas control knob not pressed in while in | 3. | Press in gas control knob while in PILOT | |
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| PILOT position |
| position | |
| 4. | Air in gas lines when installed | 4. | Continue holding down control knob. | |
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| Repeat igniting operation until air is | |
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| removed | |
| 5. Depleted gas supply (propane/LP models | 5. Contact local propane/LP gas company | |||
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| only) | 6. | Cleanpilot(seeCleaning and Maintenance, | |
| 6. | Pilot is clogged | |||
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| page 27) or replace pilot assembly | |
| 7. | Gas regulator setting is not correct | 7. | Replace gas regulator | |
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Pilot lights but flame goes out when control | 1. | Gas control knob not fully pressed in | 1. | Press in gas control knob fully | |
knob is released | 2. | Gas control knob not pressed in long | 2. | After pilot lights, keep gas control knob | |
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| enough |
| pressed in 30 seconds | |
| 3. | Equipment shutoff valve not fully | 3. | Fully open equipment shutoff valve | |
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| open | 4. | A) Contact local natural or propane/LP | |
| 4. | Pilot flame not touching thermocouple, |
| gas company | |
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| which allows thermocouple to cool, |
| B) Clean pilot (see Cleaning and | |
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| causing pilot flame to go out. This prob- |
| Maintenance, page 27) or replace pilot | |
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| lem could be caused by one or both of |
| assembly | |
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| the following: |
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| A) Low gas pressure |
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| B) Dirty or partially clogged pilot | 5. | Hand tighten until snug, then tighten | |
| 5. | Thermocouple connection loose at con- |
| 1/4 turn more | |
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| trol valve | 6. | Replace pilot assembly | |
| 6. | Thermocouple damaged | 7. | Replace control valve | |
| 7. | Control valve damaged |
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