LINE
K1
COMB BLOWER
K5
IGNITER ELEMENT
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| K3 | K4 |
24 | ECO/VENT | PRESSURE | GAS | GAS |
VAC | SWITCH | SWITCH | VALVE | VALVE |
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| RLY 1 | RLY 2 |
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| GAS |
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| VALVE |
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| K1 |
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| CONTROL |
| K5 |
| ELECTRONICS | K3 | ||
| K4 | |||
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| CONTROL | WATER |
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| HEALTH | TEMPERATURE |
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IGNITION LOCKOUT
Gas Valve LED Flashing
This condition results from a failure to establish burner ignition after three successive trials. In such cases:
First - Investigate the possible cause and remedy any observations.
Second - Momentarily press the red button on the display panel to reset the lockout condition.
Third - Confirm the proper appliance operation.
| POSSIBLE CAUSE |
| REMEDY |
1. | Burner ground wire broken | 1. | Check wire and connection |
| or corroded. |
| at burner. |
2. | Connectors unplugged. | 2. | Check connectors. |
3. | Flame probe faulty. | 3. | Replace flame probe. |
4. | Gas shut off. | 4. Turn on gas supply | |
5. | Clogged gas valve. | 5. | Replace gas valve. |
6. | Faulty gas valve. | 6. | Replace gas valve. |
7. | Defective control. | 7. | Replace control. |
8. | Burner improperly adjusted. | 8. Adjust burner. | |
9. | Dirty burner. | 9. | Clean burner. |
10. Improper line connection. | 10. Verify green LED on the- | ||
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| control board is illuminated | |
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| when power is applied. | |
11. Insufficient flame current. | 11. Montior flame current. | ||
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| See note below. | |
NOTE:
The flame current (flame rectification) is monitored by pressing the blue button to the left of the LEDs during the heat cycle or when the gas valve LED is illuminated. The
ECO SWITCH OPEN
ECO LED Flashing
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| K3 | K4 |
LINE | 24 | ECO/VENT | PRESSURE | GAS | GAS |
| VAC | SWITCH | SWITCH | VALVE | VALVE |
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| RLY 1 | RLY 2 |
K1 |
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| GAS |
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| VALVE |
COMB |
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BLOWER |
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| K1 |
K5 |
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| CONTROL |
| K5 |
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IGNITER |
| ELECTRONICS | K3 | ||
| K4 | ||||
ELEMENT |
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| CONTROL | WATER |
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| HEALTH | TEMPERATURE |
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POSSIBLE CAUSE
1.Temperature probe is unplugged.
2.Temperature probe wiring damaged.
3.Water in tank is too hot. ECO is tripped.
4.Low water cutoff device is tripped.
REMEDY
1.Check connectors.
2.Repair wiring.
3.Normal condition when water temperature exceeds safety limit. Alow tank to cool or admit cold water into tank. Manually reset the control. Determine cause for overtemp condition.
4.Make sure tank is full of water.
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