TROUBLESHOOTING
WARNING: Turn off heater and let cool before servicing. Only a qualified service 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.
Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | |||
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When ignitor button is pressed, | 1. Ignitor electrode not con- | 1. | Reconnect ignitor cable | ||
there is no spark at ODS/pilot | 2. | nected to ignitor cable | 2. | Free ignitor cable if pinched | |
| Ignitor cable pinched or wet | ||||
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| by any metal or tubing. Keep | |
| 3. | Piezo ignitor nut is loose | 3. | ignitor cable dry | |
| Tighten nut holding piezo ig- | ||||
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| nitor to base panel of log set. Nut | |
| 4. | Broken ignitor cable | 4. | is located behind base panel | |
| Replace ignitor cable | ||||
| 5. | Bad piezo ignitor | 5. | Replace piezo ignitor | |
| 6. | Ignitor electrode positioned | 6. | Replace pilot assembly | |
| 7. | wrong | 7. | Replace pilot assembly | |
| Ignitor electrode broken | ||||
When ignitor button is pressed, | 1. Gas supply turned off or equip- | 1. | Turn on gas supply or open |
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there is spark at ODS/pilot but |
| ment shutoff valve closed | 2. | equipment shutoff valve | |
no ignition | 2. Control knob not in PILOT | Turn control knob to PILOT | |||
| 3. | position | 3. | position | |
| Control knob not pressed in | Press in control knob while in | |||
| 4. | while in PILOT position | 4. | PILOT position | |
| Air in gas lines when in- | Continue holding down con- | |||
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| stalled |
| trol knob. Repeat igniting op- | |
| 5. | Depleted gas supply (pro- | 5. | eration until air is removed | |
| Contact local propane/LP gas | ||||
| 6. | pane/LP only) | 6. | company | |
| ODS/pilot is clogged | Clean ODS/pilot (see Cleaning | |||
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| and Maintenance, page 21) or | |
| 7. | Gas regulator setting not correct | 7. | replace ODS/pilot assembly | |
| Replace gas regulator | ||||
ODS/pilot lights but flame goes | 1. Control knob not fully pressed in | 1. | Press in control knob fully |
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out when control knob is re- | 2. Control knob not pressed in | 2. | After ODS/pilot lights, keep con- | ||
leased | 3. | long enough | 3. | trol knob pressed in 30 seconds | |
| Safety interlock system has | Wait one minute for safety in- | |||
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| been triggered |
| terlock system to reset. Repeat | |
| 4. | Equipment shutoff valve not | 4. | ignition operation | |
| Fully open equipment shutoff | ||||
| 5. | fully open | 5. | valve | |
| Pilot flame not touching ther- | A) Contact local natural or | |||
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| mocouple, which allows ther- |
| propane/LP gas company | |
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| mocouple to cool, causing |
| B) Clean ODS/pilot (see | |
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| pilot flame to go out. This |
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| problem could be caused by |
| Cleaning and Maintenance, | |
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| one or both of the following: |
| page 21) or replace ODS/pilot | |
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| A) Low gas pressure |
| assembly | |
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| B) Dirty or partially clogged |
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| 6. | ODS/pilot | 6. | Hand tighten until snug, then | |
| Thermocouple connection | ||||
| 7. | loose at control valve | 7. | tighten 1/4 turn more | |
| Thermocouple damaged | Replace pilot assembly | |||
| 8. | Control valve damaged | 8. | Replace control valve | |
22 | www.desatech.com |
