TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, connected to propane supply, operating, or hot. Severe burns and electrical shock can occur.
OBSERVED FAULT | POSSIBLE CAUSE | REMEDY | ||
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Fan does not turn when heater is | 1. | No electrical power to heater | 1. | Check voltage to electrical |
plugged in |
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| outlet. If voltage is good, |
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| check heater power cord for |
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| breaks |
| 2. | Fan hitting inside of heater | 2. | Adjust motor/fan guard to |
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| shell |
| keep fan from hitting inside of |
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| heater shell. Bend fan guard if |
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| necessary |
| 3. | Fan blades bent | 3. | Replace fan. See Fan, page 8 |
| 4. | Defective motor | 4. | Replace motor. See Motor, |
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| page 7 |
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Heater will not ignite | 1. | User did not follow installa- | 1. | Repeat installation and opera- |
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| tion or operation instructions |
| tion instructions. See Installa- |
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| properly |
| tion and Operation, page 5 |
| 2. | No spark at ignitor. To test for | 2. | A) Check ignitor wire. Tighten |
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| spark, follow step 9 under Ig- |
| or reattach loose ignitor wire. |
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| nitor, page 8. If you see spark |
| See Figure 14, page 8 for |
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| at ignitor, have heater serviced |
| ignitor wire location |
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| by qualified service person. If |
| B) Set gap between ignitor |
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| no spark seen: |
| electrode and target plate to |
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| A) Loose or disconnected |
| 0.17" (4.3 mm) |
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| ignitor wire |
| C) Tighten nut holding piezo |
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| B) Wrong spark gap |
| ignitor to base of heater |
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| C) Piezo ignitor loose |
| D) Replace ignitor electrode. |
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| D) Bad ignitor electrode |
| See Ignitor, page 8 |
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Heater shuts down while run- | 1. | High surrounding air tem- | 1. | This can happen when running |
ning |
| perature causing thermal limit |
| heater in temperatures above |
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| device to shut down heater |
| 85° F (29° C). Run heater in |
| 2. | Restricted air flow |
| cooler temperatures |
| 2. | Check heater inlet and outlet. | ||
| 3. | Damaged fan |
| Remove any obstructions |
| 3. | Replace fan. See Fan, page 8 | ||
| 4. | Excessive dust or debris in | 4. | Clean heater. See Mainte- |
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| surrounding area |
| nance, page 6 |
WARNING:Useonlyinareas free of high dust content.
www.desatech.com | 9 |
