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Category: Home HVAC System
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Manual for 4HP14/15 SPLIT SYSTEM HEAT PUMP - Troubleshooting and error codes + PDF Download
Uploaded: April 1, 2025, 12:48 a.m.
Warranty Summary
Unit warranty is void if the filter drier is not installed.
The system operates based on thermostat demand for heating or cooling. The indoor blower can run continuously or intermittently. Features include emergency heat function, pressure switch protection (low and high), a 5-strike lockout for pressure switches, and diagnostic LEDs for troubleshooting.
Troubleshooting and error codes
| Mode | Green LED (DS2) | Red LED (DS1) |
|---|---|---|
| No power to control | Off | Off |
| Normal operation / power to control | Simultaneous slow flash | |
| Anti-short cycle lockout | Alternating slow flash | |
| Low pressure switch fault | Off | Slow flash |
| Low pressure switch lockout | Off | On |
| High pressure switch fault | Slow flash | Off |
| High pressure switch lockout | On | Off |
Troubleshooting and error codes
| Mode | Green LED (DS2) | Red LED (DS1) |
|---|---|---|
| No power to control | Off | Off |
| Normal operation / power to control | Simultaneous slow flash | |
| Anti-short cycle lockout | Alternating slow flash | |
| Low pressure switch fault | Off | Slow flash |
| Low pressure switch lockout | Off | On |
| High pressure switch fault | Slow flash | Off |
| High pressure switch lockout | On | Off |