HEAT PUMP TERMINAL OUTPUTS
THERMOSTAT TERMINALS (Upper) |
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| PH |
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Malfunction Light |
| Not Used |
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| THERMOSTAT TERMINALS (Lower) |
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SYSTEM | E |
| C | R | W3/A1 | W2 | E2/P | W1 | Y2 | Y1 | B | O | G | |
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Heat Pump 1* | Emergency | 24 Volt | 24 Volt | Not Used | Heat mode | E2=Emer- | Heat mode | No output | Heat and | Energized in | Energized in | Blower/Fan | ||
| mode | (Common) | (Hot) |
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| 3rd stage. | gency mode | 2nd stage |
| Cool mode | Heat, Off | Cool mode | Energized on | |
| 1st stage |
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| Emergency | constant |
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| 1st stage | Emergency |
| call for Heat |
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| mode | output. |
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| (compressor) | mode |
| and Cool |
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| 2nd stage | P=All other |
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| modes |
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| constant |
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| output |
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| THERMOSTAT TERMINALS (Lower) |
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SYSTEM | E |
| C | R | W3/A1 | W2 | E2/P | W1 | Y2 | Y1 | B | O | G | |
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Heat Pump 2* | Emergency | 24 Volt | 24 Volt | Not Used | Emergency | E2=Emer- | Heat mode | Heat and | Heat and | Energized in | Energized in | Blower/Fan | ||
| mode | (Common) | (Hot) |
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| mode | gency mode | 3rd stage | Cool mode | Cool mode | Heat, Off | Cool mode | Energized on | |
| 1st stage |
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| 2nd stage | constant |
| 2nd stage | 1st stage | Emergency |
| call for Heat |
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| output. |
| (compressor | (compressor | mode |
| and Cool |
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| P=All other |
| 2) | 1) |
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| modes |
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| constant |
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| output |
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* If system does not provide connection to E, jumper W1 to E to provide Aux heating in emergency mode.
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