SECTION VII – TROUBLESHOOTING
System without Pilot continued
Symptom |
| Cause |
| Remedy |
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C. continued | 9. | Defective gas valve or actuator. | 9. | Check power to gas valves. If gas |
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| pressure matches unit rating plate |
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| and valve does not open, replace |
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| gas valve or actuator. |
| 10. | Defective spark rod or out of | 10. | Make sure spark rod is producing |
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| position. (see spark rod diagram |
| a sufficient spark to light off |
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| burner, make sure porcelain is | |
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| not cracked. Check wiring or |
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| replace if necessary. |
| 11. | Flame rod not sensing flame. (see | 11. | Make sure flame rod is in flame. |
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| spark rod diagram |
| Make sure porcelain is not |
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| cracked. Check wiring or replace |
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| if necessary. |
| 12. | Defective regulator. | 12. | Clean or replace regulator. |
| 13. | Blocked vent lines or vent | 13. | Check vent lines or replace vent |
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| limiters. |
| limiters. |
| 14. | Low fire set too low or too high. | 14. | Adjust setting on modulating valve |
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| or gas valve. |
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D. Burner will not respond to tem- | 1. | For Maxitrol system. | 1. | See following troubleshooting |
perature. |
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| guide for Maxitrol series 14 & 44. |
| 2. | For Honeywell system. | 2. | See following troubleshooting |
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| guide for Honeywell series. |
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9
