TROUBLESHOOTING
Note: For additional help, visit DESA International’s Technical Service web site at www.desatech.com.
TROUBLESHOOTING
7
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 | ||
Fan does not turn when heater is plugged in. | 1. | No electrical power to heater | 1. | Check voltage to electrical outlet. If volt- |
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| age is good, check heater power cord for |
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| breaks |
| 2. | Fan hitting inside of heater shell | 2. | Adjust motor/fan guard to keep fan from |
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| hitting inside of heater shell. Bend fan |
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| guard if necessary |
| 3. | Fan blades bent | 3. | Replace fan. See Fan, page 8 |
| 4. | Defective motor | 4. | Replace motor. See Motor, page 8 |
Heater will not ignite. | 1. User did not follow installation or op- |
| eration instructions properly |
| 2. No spark at ignitor. To test for spark, fol- |
| low step 9 under Ignitor, page 9. If you |
| see spark at ignitor, have heater serviced |
| by qualified service person. If no spark |
| seen: |
| A) Loose or disconnected ignitor wire |
| B) Wrong spark gap |
| C) Piezo ignitor loose |
| D) Bad ignitor electrode |
1.Repeat installation and operation in- structions. See Installation, page 5 and Operation, pages 5 and 6
2.A) Check ignitor wire. Tighten or reat- tach loose ignitor wire. See Figure 17, page 9 for ignitor wire location
B)Set gap between ignitor electrode and target plate to .17"
C)Tighten nut holding piezo ignitor to base of heater
D)Replace ignitor electrode. See Igni- tor, page 9
Heater shuts down while running.
1.High surrounding air temperature caus- ing thermal limit device to shut down heater
2.Restricted air flow
3.Damaged fan
4.Excessive dust or debris in surrounding area
1.This can happen when running heater in temperatures above 85°F. Run heater in cooler temperatures
2.Check heater inlet and outlet. Remove any obstructions
3.Replace fan. See Fan, page 8
4.Clean heater. See Maintenance, page 6
WARNING: Use only in areas free of high dust content.
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