What to do if American Standard 4A6L5048N1000A Heat Pump compressor fails to start?
If the compressor fails to start, wait 3 minutes and check the contactor. Check for 24 volts AC across the contactor coil. If necessary, replace the contactor. Also, check the low voltage transformer and control fuse, repairing or replacing them if needed. Investigate the cause for the failure, looking for possible shorts in the connecting wiring.
General safety warning for installation and service personnel.
Covers hazardous voltage, refrigerant, hot surfaces, grounding, service valves, and chemical exposure warnings.
Step-by-step instructions for brazing refrigerant lines.
Procedure for performing a leak check and evacuating refrigerant lines and the indoor coil.
Requirements and safety precautions for the high voltage power supply.
Installation and safety guidelines for a separate high voltage disconnect switch.
Ensuring proper grounding of the outdoor unit per national, state, and local codes.
Recommended subcooling method for charging above 55° F ambient temperatures.
Troubleshooting steps when the compressor fails to start, checking contactors and voltage.
Diagnostic steps for a compressor that won't run, checking voltage, windings, and start components.
General| Brand | American Standard |
|---|---|
| Type | Heat Pump |
| Model Number | 4A6L5048N1000A |
| SEER Rating | 16 |
| Refrigerant | R-410A |
| Voltage | 208/230V |
| Phase | 1 |
| Cooling Capacity (BTU/h) | 48000 |
| Heating Capacity (BTU/h) | 48000 |
| Cooling Capacity | 4 Tons |
| HSPF Rating | 9.0 |
| Compressor Type | Single Stage |
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