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General| Model | ASZC180481AB |
|---|---|
| Type | Heat Pump |
| Cooling Capacity (BTU) | 48000 |
| Heating Capacity (BTU) | 48000 |
| SEER | 18 |
| Refrigerant | R-410A |
| Voltage | 208/230 |
| Phase | 1 |
| Stages | Two-stage |
Safety precautions regarding refrigerant handling, ventilation, and cylinders.
Explanation of the coding system for identifying product models.
Overview of condensing units and Ultratech/Compliant Scroll compressors.
R-410A refrigerant, principles, and cooling cycle explanation.
System operation in heating mode and defrost cycle control.
Chart correlating symptoms, causes, and remedies for cooling/HP issues.
Procedure for measuring voltage and inspecting wiring.
Identifying and resolving network communication issues using LEDs.
Testing pressure controls and switches for proper operation.
Table of diagnostic codes for specific control boards.
Diagnostic codes for low side faults and pressure cut-outs.
Diagnostic codes for high side faults and pressure cut-outs.
Diagnostic codes for short cycling, locked rotor, and open circuits.
Diagnostic codes for open start/run circuits and low line voltage.
Diagnostic codes for high line voltage, low pilot voltage, and protector open.
Diagnostic codes for sensor faults, fuses, and blower motors.
Diagnostic codes for system mismatches and data errors.
Diagnostic codes for data errors and low side faults.
Diagnostic codes for pressure cut-outs and high side faults.
Diagnostic codes for high line voltage, low pilot voltage, and protector open.
Adjusting ECM motor CFM using dipswitches and understanding settings.
Resistance, ground, and unloader tests for compressors.
Practices for system repair and leak detection.
Proper methods for system evacuation and charging.
Checking compressor efficiency and diagnosing burnout.
