Table 7 - Tubular Propeller Troubleshooting Guide
SYMPTOMS |
| POSSIBLE CAUSE(S) |
| CORRECTIVE ACTION |
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A. Flame pops back. | 1. Burner orifice too small. | 1. | Check with local gas supplier for proper orifice | |
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| size and replace. Refer to “Operation”. |
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B. Noisy Flame. | 1. Irregular orifice causing whistle or resonance. | 1. | Replace orifice. | |
| 2. | Excessive gas input. | 2. | Test and reset manifold pressure. |
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C. Yellow tip flame (some yellow | 1. Clogged main burners. | 1. | Clean main burner ports. | |
tipping on LP gas is permissible). | 2. Misaligned orifices. | 2. | Replace manifold assembly. | |
| 3. | Insufficient combustion air. | 3. | Insufficient combustion air. |
| 4. | Possibly over fired. | 4. | Check gas input and manifold pressures. |
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D. Floating flame. | 1. Blocked venting. | 1. | Clean Flue. Refer to “Installation”. | |
| 2. | Insufficient combustion air. | 2. | Clean combustion air inlet openings. |
| 3. | Blocked heat exchanger. | 3. | Clean heat exchanger. Refer to “Installation”. |
| 4. | Air leak into combustion chamber | 4. | Determine cause and repair accordingly. |
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| or draft hood. |
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E. Gas odor. | 1. Shut off gas supply immediately! | 1. | Inspect all gas piping and repair. | |
| 2. | Leaking gas test port on valve. | 2. | Check to ensure gas test ports are seated. |
| 3. | Blocked heat exchanger. | 3. | Clean heat exchanger/flue. |
| 4. | Blocked draft hood. | 4. | Clean flue collector. |
| 5. | Negative pressure in the building. | 5. | See “Installation”. |
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F. Delayed ignition. | 1. Improper ground. | 1. | Check grounding wires and spark bracket | |
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| connections. |
| 2. | Bad or broken spark cable. | 2. | Inspect spark cable connections and cuts. |
| 3. | Faulty control. | 3. | Check to ensure spark is energized after |
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| pre purge period. |
| 4. | Pressure regulator set too low. | 4. | Test and reset manifold pressure refer to |
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| “Operations”. |
| 5. | Main burner orifices dirty. | 5. | Clean or replace orifices. |
| 6. | Improper venting. | 6. | Refer to “Installation”. |
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G. Failure to ignite. | 1. Gas supply is off. | 1. | Open all manual valves “check for leaks”. | |
| 2. | No power supply to unit. | 2. | Turn on power supply, check fuses and |
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| replace if bad. |
| 3. | Thermostat not calling. | 3. | Turn up thermostat, Check for 24v on |
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| terminals R and W1 on terminal strip. |
| 4. | Defective high limit. | 4. | Check switch for continuity if open with no |
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| heat present, replace. |
| 5. | Defective drafter prove switch. | 5. | Check switch operation to ensure |
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| switch closes after draftor purge period. |
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| If it does not make/check tubing |
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| connections/ blockage. |
| 6. | Loose wiring. | 6. | Check all wiring per diagram. |
| 7. | Improper ground. | 7. | Check all ground wires and connections. |
| 8. | Improper thermostat or transformer wiring. | 8. | Check both, for wiring according to diagram; |
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| check for 24V at gas valve terminals during |
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| trial for ignition period if present and valve |
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| does not open. Replace valve. |
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H. Condensation. | 1. Improper venting. | 1. | Refer to “Installation, Venting”. | |
| 2. | Unit under fired. | 2. | Check gas supply pressures to unit. Refer |
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| to “Installation”. |
| 3. | Building too cold. | 3. | Refer to “Installation”. |
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