To Next PageTo Next PageWhat to do if American Standard 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| Brand | American Standard |
|---|---|
| Model | 4A6L5030N1000A |
| Category | Heat Pump |
| Language | English |
Provides a paramount safety warning for qualified personnel regarding hazardous installation and service procedures.
Covers severe hazards from live voltage, refrigerant pressure, hot surfaces, and oil, requiring strict adherence to safety.
Details essential safety for proper grounding, service valve operation, and leak-free brazing techniques.
Details recommended clearances for optimal airflow and access for serviceability.
Step-by-step guide for brazing, including tube preparation, purging with nitrogen, and brazing connections.
Details brazing to service valves, using wet rags, and continuing nitrogen purge until completion.
Outlines pressurizing the system with nitrogen and checking for leaks with a soapy solution.
Guides on achieving a vacuum of 350 microns for a leak-free and dry refrigeration system.
Covers essential safety precautions for high voltage power supply, wiring, and compliance with codes.
Stresses the need for a separate disconnect switch and considerations for conduit type.
Flowchart to troubleshoot compressor startup failures by checking contactors, voltage, and control circuits.
Diagnoses issues related to high voltage supply, internal overloads, and open windings.
Focuses on checking start capacitors, relays, run capacitors, and compressor wiring.
