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.
The two most common causes of a malfunctioning gas appliance are:
1.Loose wiring connections
2.Construction debris clogging the pilot and/or gas control valve filter
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | |||
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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 | |
| Tighten nut holding piezo | ||||
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| ignitor. Nut is located behind | |
| 4. | Broken ignitor cable | 4. | the mounting bracket | |
| 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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| wrong |
| necessary | |
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When ignitor button is pressed, | 1. Gas supply turned off or equip- | 1. | Turn on gas supply or open | ||
there is spark at pilot but no |
| ment shutoff valve closed | 2. | equipment shutoff valve | |
ignition | 2. Gas control knob not in PI- | Turn gas control knob to PILOT | |||
| 3. | LOT position | 3. | position | |
| Gas control knob not pressed | Press in gas control knob while | |||
| 4. | in while in PILOT position | 4. | in PILOT position | |
| Air in gas lines when in- | Continue holding down con- | |||
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| stalled |
| trol knob. Repeat igniting | |
| 5. Depleted gas supply (propane/ |
| operation until air is removed | ||
| 5. Contact local propane/LP gas | ||||
| 6. | LP models only) | 6. | company | |
| Pilot is clogged | Clean pilot (see Cleaning and | |||
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| Maintenance, page 33) or re- | |
| 7. | Gas regulator setting is not | 7. | place pilot assembly | |
| Replace gas regulator | ||||
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| correct |
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www.desatech.com | 35 |
