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 |
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 |
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| 4. | Pilot flame not touching thermocouple, | 4. | A) Contact local natural or propane/LP |
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| which allows thermocouple to cool, |
| gas company |
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| causing pilot flame to go out. This prob- |
| B) Clean pilot (see Cleaning and |
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| lem could be caused by one or both of |
| Maintenance, page 27) or replace pilot |
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| the following: |
| assembly |
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| A) Low gas pressure |
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| B) Dirty or partially clogged pilot |
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| 5. | Thermocouple connection loose at con- | 5. | Hand tighten until snug, then tighten |
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| trol valve |
| 1/4 turn more |
| 6. | Thermocouple damaged | 6. | Replace pilot assembly |
| 7. | Control valve damaged | 7. | Replace control valve |
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