TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, operating or hot. Severe burns and electrical shock can occur. Only a qualified service person should service and repair heater.
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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Motor does not start when heater | 1. No power or low voltage at | 1. | A) Check condition of power | |
is plugged in and thermostat set- |
| heater due to: |
| cord or extension cord. Repair |
ting is higher than surrounding |
| A) Damaged power cord or |
| or replace if damaged |
air temperature |
| extension cord |
| B) Use extension cord with |
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| B) Wrong size extension cord |
| proper wire size (see To Start |
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| C) Heater plugged into outlet |
| Heater, page 4) |
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| with voltage lower than 120 |
| C) Make sure heater is plugged |
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| volt |
| into 120 volt/60 hertz outlet |
| 2. | Loose electrical connections | 2. | Check connections. Tighten if |
| 3. | Motor overload protector |
| loose |
| 3. | A) See Fan Blades and Air | ||
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| tripped due to: |
| Deflectors, page 10 |
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| A) Dirty fan |
| B) Remove debris from fan |
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| B) Debris pulled into fan area |
| and fan guard area |
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| by fan |
| C) Turn fan by hand. If fan is |
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| C) Binding pump |
| hard to turn, see Pump, page |
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| D) Low voltage |
| 12 |
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| D) See steps B and C under |
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| item 1 above |
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| Note: Be sure to reset motor |
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| overload protector by pressing |
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| reset button on top of motor |
| 4. | 4. | Press and release | |
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| control reset button. See |
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| Figure 4, page 4 for button |
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| location |
| 5. | Damaged | 5. | Replace |
| 6. | Damaged power relay | 6. | Replace power relay |
| 7. | Damaged thermostat | 7. | Replace thermostat |
| 8. | Binding pump | 8. | Turn fan by hand. If fan is hard |
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| to turn, see Pump, page 12 |
www.desatech.com | 7 |