TROUBLESHOOTING
19
TROUBLESHOOTING
Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.
Note: All troubleshooting items are listed in order of operation.
WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice person should service and repair heater.
CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/ pilot unit.
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
When ignitor button is pressed in, there is no | 1. | Ignitor electrode positioned wrong | 1. | Replace pilot assembly |
spark at ODS/pilot | 2. | Ignitor electrode broken | 2. | Replace pilot assembly |
| 3. | Ignitor electrode not connected to igni- | 3. | Reconnect ignitor cable |
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| tor cable |
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| 4. | Ignitor cable pinched or wet | 4. | Free ignitor cable if pinched by any |
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| metal or tubing. Keep ignitor cable dry |
| 5. | Broken ignitor cable | 5. | Replace ignitor cable |
| 6. | Bad piezo ignitor | 6. | Replace piezo |
| 7. | Piezo ignitor nut is loose | 7. | Tighten nut holding piezo ignitor. Nut |
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| is located inside heater cabinet at top |
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When ignitor button is pressed in, there is a | 1. | Gas supply turned off or equipment | 1. | Turn on gas supply or open equipment |
spark at ODS/Pilot but no ignition |
| shutoff valve closed |
| shutoff valve |
| 2. | Control knob not fully pressed in while | 2. | Turn to PILOT/IGN position. Fully press |
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| pressing ignitor button |
| in control knob while pressing ignitor |
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| models only) |
| button |
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| Thermostat control knob not fully |
| Fully press in thermostat control knob |
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| pressed in while pressing ignitor button |
| while pressing ignitor button (thermo- |
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| (thermostat models only) |
| stat models only) |
| 3. | Air in gas lines when installed | 3. | Continue holding down control knob. Re- |
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| peat igniting operation until air is removed |
| 4. | Depleted gas supply (propane/LP gas) | 4. | Contact local propane/LP gas company |
| 5. | ODS/pilot is clogged | 5. | Clean ODS/pilot (see Cleaning and |
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| Maintenance, page 17) or replace ODS/ |
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| pilot assembly |
| 6. | Gas regulator setting is not correct | 6. | Replace gas regulator |
| 7. | Thermostat control knob is not in pilot | 7. | Turn thermostat control knob to pilot |
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| position (thermostat models only) |
| position |
For more
visit www.
.com
107887
