TROUBLESHOOTING
WARNING: Never attempt to service heater while it is connected to propane supply, operating or hot. Severe burns can occur.
SYMPTOM | POSSIBLE CAUSE | REMEDY | ||
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Burner fails to light | 1. Gas supply valve closed | 1. | Open gas supply valve slowly | |
| 2. | 2. | Close propane supply valve | |
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| closed (propane/LP units |
| on propane tank and reopen |
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| only) |
| slowly |
| 3. | Blockage in burner orifice | 3. | Replace burner orifice |
| 4. | Piezo ignition system not | 4. | Assure ignitor electrode gap is |
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| sparking |
| 5.0 mm (.195 in). Check wire |
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| lead for damage Replace piezo |
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| ignitor and/or ignitor electrode |
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| as necessary. Do not bend elec- |
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| trode, this may cause breakage |
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Pilot lights but goes out when | 1. Not enough | 1. | Relight, hold automatic control | |
automatic control valve button |
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| valve button in 45 seconds |
is released | 2. Low gas pressure | 2. | Check for proper gas supply | |
| 3. | Thermocouple loose or needs | 3. | Tighten connection or replace |
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| to be replaced |
| thermocouple |
| 4. | Automatic control valve needs | 4. | Replace automatic control |
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| to be replaced |
| valve |
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Burn rate is low | 1. Main burner valve not fully | 1. | Fully open main burner valve | |
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| open |
| by pushing in control knob |
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| and turning counterclockwise |
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| towards HIGH position until |
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| it stops |
| 2. | Plugged gas orifices | 2. | Replace gas orifice |
| 3. | Low gas pressure | 3. | Check gas supply; check |
| 4. | Low fuel supply |
| regulator output |
| 4. | Consult gas supplier to deter- | ||
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| mine adequate supply. If using |
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| propane/LP gas, the tank could |
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| be empty |
8 | www.desatech.com |