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 service person should service and repair
CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot.This can damage ODS/
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY |
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When ignitor button is pressed, there is no | 1. | Ignitor electrode not connected to ignitor | 1. | Reconnect ignitor cable | |
spark at ODS/pilot |
| cable |
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| 2. | Ignitor cable pinched or wet | 2. | Free ignitor cable if pinched by any | |
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| metal or tubing. Keep ignitor cable dry | |
| 3. | Piezo ignitor nut is loose | 3. | Tighten nut holding piezo ignitor to base | |
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| panel of log set. Nut is located behind | |
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| base panel. | |
| 4. | Broken ignitor cable | 4. | Replace ignitor cable | |
| 5. | Bad piezo ignitor | 5. | Replace piezo ignitor | |
| 6. | Ignitor electrode positioned wrong or | 6. | Replace pilot assembly for | |
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| broken |
| units; Replace ignitor electrode for vari- | |
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| able manually controlled units | |
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When ignitor button is pressed, there is spark | 1. | Gas supply turned off or equipment | 1. | Turn on gas supply or open equipment | |
at ODS/pilot but no ignition |
| shutoff valve closed |
| shutoff valve | |
| 2. | Control knob not in PILOT position | 2. | Turn control knob to PILOT position | |
| 3. | Control knob not pressed in while in | 3. | Press in control knob while in PILOT | |
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| PILOT position |
| position | |
| 4. | Air in gas lines when installed | 4. | Continue holding down control knob. | |
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| Repeat igniting operation until air is | |
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| removed | |
| 5. | Depleted gas supply (propane/LP | 5. | Contact local propane/LP gas company | |
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| only) | 6. | Clean ODS/pilot (see Cleaning and | |
| 6. | ODS/pilot is clogged |
| Maintenance, page 18) or replace | |
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| ODS/pilot assembly | |
| 7. | Gas regulator setting is not correct | 7. | Replace gas regulator | |
ODS/pilot lights but flame goes out when control knob is released
1.Control knob not fully pressed in
2.Control knob not pressed in long enough
3.Safety interlock system has been triggered
4.Equipment shutoff valve not fully open
5.Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This prob- lem could be caused by one or both of the following:
A)Low gas pressure
B)Dirty or partially clogged ODS/ pilot
6.Thermocouple connection loose at con- trol valve
1.Press in control knob fully
2.After ODS/pilot lights, keep control knob pressed in 30 seconds
3.Wait one minute for safety interlock sys- tem to reset. Repeat ignition operation
4.Fully open equipment shutoff valve
5.A) Contact local natural or propane/LP gas company
B) Clean ODS/pilot (see Cleaning and Maintenance, page 18) or replace ODS/ pilot assembly
6.Hand tighten until snug, then tighten 1/4 turn more
7.Replace pilot assembly
8.Replace control valve
For more information, visit www.desatech.com
