WARNING
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| TROUBLESHOOTING |
| CAUTION |
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repair heater. |
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turn off and unplug heater and let |
| Never use a wire, needle, or similar |
cool before servicing. Only a qualified |
| object to clean ODS/pilot. This can |
service person should service and |
| damage ODS/ pilot unit. |
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Note: All troubleshooting items are listed in order of operation.
OBSERVED |
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PROBLEM | POSSIBLE CAUSE | REMEDY | ||
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When ignitor button | 1. Ignitor electrode positioned wrong | 1. | Replace pilot | |
is pressed, there is no | 2. Ignitor electrode broken | 2. | Replace pilot | |
spark at ODS/pilot | 3. Ignitor electrode not connected to ignit- | 3. | Reconnect ignitor cable | |
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| or cable |
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| 4. | Ignitor cable pinched or wet | 4. | Free ignitor cable if pinched by any metal |
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| or tubing. Keep ignitor cable dry |
| 5. | Broken ignitor cable | 5. | Replace ignitor cable |
| 6. | Bad piezo ignitor | 6. | Replace piezo ignitor |
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When ignitor button | 1. Gas supply turned off or equipment shutoff | 1. | Turn on gas supply or open equipment | |
is pressed, there is |
| valve closed |
| shutoff valve |
spark at ODS/pilot but | 2. Control knob not in PILOT position | 2. | Turn control knob to PILOT position | |
not ignition | 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. Repeat |
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| igniting operation until air is removed |
| 5. | Depleted gas supply | 5. | Contact local gas company |
| 6. | ODS/pilot is clogged | 6. | Clean ODS/pilot (see “Cleaning and |
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| Maintenance,” page 26) or replace ODS/ |
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| pilot assembly |
| 7. | Gas regulator setting is not correct | 7. | Replace gas regulator |
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ODS/pilot lights but | 1. Control knob not fully pressed in | 1. | Press in control knob fully | |
flame goes out when | 2. Control knob not pressed in long enough | 2. | After ODS/pilot lights, keep control knob | |
control knob is released |
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| pressed in 30 seconds |
| 3. | Safety interlock system has been triggered | 3. | Wait one minute for safety interlock |
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| system to reset. Repeat ignition operation |
| 4. | Equipment shutoff valve not fully open | 4. | Fully open equipment shutoff valve |
| 5. | Thermocouple connection loose at control | 5. | Hand tighten until snug, then tighten 1/4 |
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| valve |
| turn more |
| 6. | Pilot flame not touching thermocouple, which | 6. | A) Contact local gas company |
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| allows thermocouple to cool, causing pilot |
| B) Clean ODS/pilot (see “Cleaning and |
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| flame to go out. This problem could be |
| Maintenance,” page 26) or replace ODS/ |
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| caused by one or both of the following: |
| pilot assembly |
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| A) Low gas pressure |
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| B) Dirty or partially clogged ODS/pilot |
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| 7. | Thermocouple damaged | 7. | Replace thermocouple |
| 8. | Control valve damaged | 8. | Replace control valve |
Continued
49D0090 | 23 |