Problem |
| Possible Cause |
| What To Do |
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When control knob is pressed in | 1. | Ignitor electrode positioned wrong. | 1. | Reposition ignitor electrode. |
and turned counterclockwise to | 2. | Ignitor electrode broken. | 2. | Replace electrode. |
ignition, there is no spark at | 3. | Ignitor cable pinched or broken. | 3. | Free ignitor cable, if damaged, replace. |
ODS pilot. | 4. | Ignitor cable not connected to ignitor | 4. | Connect cable to electrode |
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| electrode. |
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When control knob is pressed in | 1. | Gas supply turned off. | 1. Turn gas supply on. | |
and turned counterclockwise to | 2. | Control knob not in pilot position. | 2. Turn control knob to pilot position. | |
ignition/pilot position there is | 3. | Control knob not pressed in while in pilot | 3. | Press in control while in pilot position. |
spark but no ignition |
| position. | 4. | Call a qualified service technician. |
| 4. | ODS pilot is clogged. |
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| 5. Air in gas lines. | 5. | Purge gas lines and repeat ignition operation. | |
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ODS pilot lights but flame | 1.Control knob not pressed long enough. | 1. After ODS pilot lights, keep control knob | ||
goes out when control knob | 2. | Safety interlock is triggered. |
| pressed in approximately 30 seconds. |
is released. | 3. | Pilot flame not touching the thermocouple. | 2. Wait one minute, repeat ignition operation. | |
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| Problem could be result of one or both of | 3. | Contact your gas company, gas supplier or |
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| the following: |
| qualified service technician. |
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| • Partially clogged ODS pilot orifice. |
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| • Low gas pressure. |
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| 4. Thermocouple damaged. | 4. | Replace thermocouple. | |
| 5. Thermocouple connection loose at gas | 5. | Hand tight until snug then tighten 1/4 turn with | |
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| control valve. |
| a wrench. |
| 6. | Gas control valve damaged. | 6. | Replace gas control. |
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Burner does not light after ODS | 1. | Burner orifice clogged. | 1. | Clean burner orifice. |
pilot is lit. | 2. | Gas supply pressure is very low. | 2. | Contact gas supplier. |
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Delayed ignition. | 1. | Main burner carry over ports clogged. | 1. | Clean main burner ports. |
| 2. | Gas supply pressure is very low. | 2. | Contact gas supplier. |
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Burner backfiring during | 1. | Burner orifice is clogged. | 1. | Clean burner orifice. |
operation. | 2. | Burner ports damaged. | 2. | Replace burner. |
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Yellow flames during burner | 1. | Not enough air | 1. | Check air passageways and burner for dirt and |
operation. |
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| debris (Refer to Maintenance section) |
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Burner plaque(s) does not glow. | 1. | Plaque(s) is damaged. | 1. | Replace burner. |
| 2. | Inlet gas pressure too low. | 2. | Contact local gas supplier. |
| 3. | Control knob set between locked positions. | 3. Turn control knob until it locks at desired | |
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| setting. |
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Slight smoke and odor during | 1. | Residues from manufacturing processes. | 1. Will stop after a few hours of operation. | |
initial operation. |
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Heater produces a whistling | 1. Air passageways blocked. | 1. | Check minimum installation clearances and air | |
noise when burner is lit. |
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| passageways for debris. |
| 2. Air in gas line. | 2. | Operate burner until the air is completely | |
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| purged. |
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