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Adam FisherSep 12, 2025
How to troubleshoot motor electrical trouble in McQuay Heat Pump?
- SSarah ReynoldsSep 12, 2025
Check the motor for opens, short circuits, or burnout.
How to troubleshoot motor electrical trouble in McQuay Heat Pump?
Check the motor for opens, short circuits, or burnout.
How to fix loose wiring in McQuay Heat Pump?
Check all wire junctions and tighten all terminal screws.
General| Category | Heat Pump |
|---|---|
| Model | SEASONCON ALP-090C |
| Power Supply | 220-240V/1Ph/50Hz |
| Refrigerant | R410A |
| Net Weight (Outdoor Unit) | 45 kg |
| Operating Temperature Range (Cooling) | 18-43°C |
| Operating Temperature Range (Heating) | -7-24°C |
Instructions for safe lifting and moving of the unit to prevent damage to the cabinet and components.
Detailed requirements for suction and liquid lines to minimize pressure drop and ensure oil return.
Essential checks to perform before initiating unit startup, including electrical connections and safety.
Steps for the first-time startup of the unit, including setting controls and checking operation.
Guidance on checking and maintaining the compressor oil level, including approved oil types and methods.
Procedure for changing filter-driers, including pumpdown and jumper installation.
Detailed explanation of the oil pressure safety control, its function, and testing procedure.
Description of the high pressure control, its function, settings, and checking procedure.
Description of the low pressure control, its function, settings, and checking procedure.
Explanation of the FANTROL system for head pressure control via condenser fan modulation.
Explanation of the hot gas bypass system for maintaining evaporator pressure and oil return.
Details on the oil pressure control, its function, setting, and reset procedure.
Details on the high ambient unloader pressure control for condenser pressure management.
Details on FANTROL settings for controlling condenser fans based on pressure and ambient temperature.
Details on the compressor lockout time delay for preventing short cycling.
Troubleshooting steps for a compressor that fails to start or run.
Troubleshooting steps for compressor noise or vibration issues.
Troubleshooting steps for high discharge pressure conditions in the system.
Troubleshooting for loss of oil pressure or nuisance trips of the oil pressure control.
Troubleshooting steps for motor overload relays opening or fuses blowing.
Troubleshooting steps for a compressor thermal protector switch opening.
