TROUBLESHOOTING ECM™ BLOWER MOTORS (Cont’d.)
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| Continuous |
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| Dehum. |
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| Heat Pump | Heat Pump |
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MODE of | OFF | Blower | Part Load | Full Load |
| Part Load | Full Load | Full Load with | Full Load with | Emergency | |
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OPERATION | (Ventilation | Cooling | Cooling |
| Heat Pump | Heat Pump | 1st Bank of | 1st & 2nd Bank of | Heat Mode | ||
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| Electric Heat | Electric Heat |
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Thermostat |
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| "G", | "G", |
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| "G", "B", | "G", "B", | "G", "Y1", | "G", "Y1", "Y2", | "G", |
24 VAC | — | "G" |
| "D" | |||||||
"Y1", "Y2" | "Y1", "Y2" |
| "Y1" | "Y1, "Y2" | "Y2", "B", "W1" | "B", "W2", "W3" | "W2", "W3" | ||||
Input Signals |
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Pin #1 | 24 VAC "C" (Common) Signal, Always Energized |
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Pin #2 |
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| X |
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Pin #3 | 24 VAC "C" (Common) Signal, Always Energized |
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Pin #4 | Not Used |
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Pin #5 | Not Used |
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Pin #6 |
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| X | X |
| X | X | X | X | X |
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Pin #7 | Not Used |
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Pin #8 | Not Used |
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Pin #9 |
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| X | X | X |
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Pin #10 | Not Used |
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Pin #11 | Not Used |
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Pin #12 | 24 VAC Hot "R" Signal, Always Energized |
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Pin #13 |
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| X | X |
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Pin #14 |
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| X |
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| X | X |
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Pin #15 |
| X | X | X |
| X | X | X | X | X | X |
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Pin #16 | Not Used |
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FIGURE 33
CONTROL CONNECTOR MOTOR HALF
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
POWER CONNECTOR *
PWB HEADER | AMP |
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PIN | Description |
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1 | Jumper Pin 1 to Pin 2 for |
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2120VAC Line Input Only **
3Chassis Ground
4AC Line
5AC Line
*Suggested mating connector Housing — AMP
**WARNING — Applying 240VAC line input with PIN 1 to PIN 2 jumper in place will permanently damage unit!
POWER CONNECTOR | 1 | 2 | 3 | 4 | 5 | |
MOTOR HALF | ||||||
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FAN BLADE SETTING DIMENSIONS
The position of the fan blade should be flush with the leaving face of the orifice plate. Check to make sure the blades do not extend beyond the rear casing of the unit. Spin the blade by hand to make sure it does not hit the ring.
REFRIGERANT CHARGE
This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined by testing with this refrigerant charge quantity. The following pressure tables show nominal pressures and temperatures for the units. Since many installation specific situations can affect the pressure readings, this information should only be used by certified technicians as a guide for evaluating proper system performance. They shall not be used to adjust charge. If charge is in doubt, reclaim, evacuate and recharge the unit to the serial plate charge.
Manual | |
Page | 57 of 59 |