STATUS INDICATIONS UNDER NORMAL CONDITIONS
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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 |
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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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1. Idle Status
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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 |
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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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2. Call for Heat
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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 |
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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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3. Combustion Blower Powered
KEY:
Lamp ON
Lamp OFF
Lamp Flashing
NOTICE:
If an error message is still indicated after removal of the replaceable 3 amp fuse on the CONTROL, there is a problem with the transformer. The TRANSFORMER has an internal
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