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