GOLD
11d Troubleshooting — control module lights (cont.)
CHART 4 — FLAME & POWER lights flashing
— Usually indicates flame sensed when it shouldn't be there —
Electrical shock hazard — Wherever you see TURN OFF POWER, follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.
Are manual main shutoff valve and gas valve open?
No
Yes
• Leave main manual gas valve closed. |
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| • Turn off power to the boiler at service switch or breaker. | |||||
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| • Wait at least 45 seconds. |
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• Turn off power to boiler at service switch or breaker. |
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| • Turn on power to boiler. |
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• Wait at least 45 seconds. |
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| • Restart boiler, following Operating instructions in this | ||||||
• Turn on power to boiler. |
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| manual (Section 9c). |
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• Restart boiler, following Operating instructions in this |
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| • Look through the pilot inspection port (in front of air inlet | ||||||||
manual (Section 9c). |
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| box) to see if the pilot is burning during the prepurge | ||||||
Do FLAME and POWER lights still flash? |
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| period (first 30 seconds of operation). |
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| Is pilot burning during prepurge period? | |||
No |
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| No |
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•Replace control module.
•Retest.
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| • Allow boiler to continue cycling. |
| • | Replace gas valve. |
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| • | Retest boiler. |
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| Are FLAME & POWER lights flashing? |
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| Are FLAME and POWER lights flashing? | |||||||||||
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| No |
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| No |
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• | TURN OFF POWER |
| • | Boiler may now be |
| • | Replace control |
| • | Boiler should now |
| • | Replace control | ||||
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| operating |
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| module. |
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| operate normally. |
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| to boiler at service switch |
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| normally. |
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| or breaker. |
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| • | Retest. |
| • | Original flashing |
| • | Retest. | |||||
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• | Open main manual gas |
| • | Perform |
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| FLAME light |
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| valve. |
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| caused by gas |
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• Turn on power to boiler |
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| boiler manual to |
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| valve not |
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| at service switch or |
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| verify proper |
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| operating properly. |
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| breaker. |
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| operation. |
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| • | See normal |
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• Restart boiler per lighting |
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| instructions. |
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| sequence of |
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• | Perform |
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| operation, |
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| procedures in boiler |
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| Figure 18, |
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| manual to verify proper |
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| page 33. |
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| operation. |
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50
Part number
