GOLD GV Water boiler series 3 — manual
XIg Troubleshooting — GCM lights (continued)
CHART 7 — LIMIT light flashing and POWER light on steady
Electrical shock hazard — Wherever you see ▲ TURN OFF POWER▲ , follow the instructions. Failure to follow instructions could result in severe personl injury, death or substantial property damage.
•This is not a lockout mode. The control module should only be signaling that the water temperature sensor is either shorted or there is an open circuit across the sensor terminals..
•This situation is usually corrected by replacing the sensor, as described below.
•Remove SENSOR plug from receptacle on GCM (Figure 34, Item 6). Then
Does LIMIT light still flash?
No | Yes | |
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• Replace sensor and harness.
Does LIMIT light still flash?
No
Yes
•Boiler may now be operating correctly. Verify per normal sequnce of operation in Figure 22.
• Replace GCM (control module).
• Retest.
80 | Part number |
