Troubleshooting
WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.
CAUTION: Never use a wire, needle or similar object to clean pilot. This can damage pilot unit.
Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM | POSSIBLE CAUSE |
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When ignitor button is pressed, | 1. Ignitor electrode not con- | 1. | Reconnect ignitor cable | |||||
there is no spark at pilot | 2. | nected to ignitor cable |
| 2. | Free ignitor cable if pinched | |||
| Ignitor cable pinched or wet | |||||||
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| by any metal or tubing. Keep | ||
| 3. | Piezo ignitor nut is loose | 3. | ignitor cable dry |
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| Tighten nut holding piezo | |||||||
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| ignitor. Nut is located behind | ||
| 4. | Broken ignitor cable |
| 4. | the mounting bracket | |||
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| Replace ignitor cable | ||||||
| 5. | Bad piezo ignitor |
| 5. | Replace piezo ignitor | |||
| 6. | Ignitor electrode broken | 6. | Replace pilot assembly | ||||
| 7. | Ignitor electrode positioned | 7. | Tighten electrode. Replace if | ||||
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| necessary |
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When ignitor button is pressed, | 1. Gas supply | turned | off or | 1. | Turn on gas supply or open | |||
there is spark at pilot but no |
| equipment | shutoff | valve |
| equipment shutoff valve | ||
ignition | 2. | closed |
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| 2. | Turn gas control knob to | ||
| Gas control knob not in PI- | |||||||
| 3. | LOT position |
| 3. | PILOT position |
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| Gas control knob not pressed | Press in gas control knob | ||||||
| 4. | in while in PILOT position | 4. | while in PILOT position | ||||
| Air in gas lines when in- | Continue holding down con- | ||||||
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| stalled |
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| trol knob. Repeat igniting op- | ||
| 5. Depleted gas supply (propane/ |
| eration until air is removed | |||||
| 5. Contact local propane/LP gas | |||||||
| 6. | LP models only) |
| 6. | company | Cleaning | ||
| Pilot is clogged |
| Clean pilot (see | |||||
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| and Maintenance, | page 31) | |
| 7. | Gas regulator setting is not | 7. | or replace pilot assembly | ||||
| Replace gas regulator | |||||||
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www.desatech.com | 33 |