Why does my Cooper & Hunter GRS-C3.5/A1-K Heat Pump wired controller show L6 and the water temperature?
The wired controller displaying L6 and the water temperature alternately indicates that the ambient temperature is outside the operational range of the main unit, preventing it from starting. In this situation, the auxiliary electric heater will run independently, which is normal.
What to do if my Cooper & Hunter GRS-C3.5/A1-K Heat Pump makes strange noises or smells bad?
If you notice a strong or unpleasant smell, loud noises, or frequent tripping of the circuit breaker while using your Cooper & Hunter Heat Pump, immediately stop using the unit and disconnect it from the power supply. This indicates a potential safety issue.
What does it mean when my Cooper & Hunter GRS-C3.5/A1-K Heat Pump wired controller displays 'Antifreeze'?
The wired controller displaying “Antifreeze” means that the Cooper & Hunter Heat Pump is automatically running its anti-freezing function during winter, which is a normal operation.
Why is water draining from the safety valve of my Cooper & Hunter Heat Pump?
A small amount of water draining from the safety valve is normal. This occurs because of overpressure inside the water tank, and the draining is a pressure relief measure.
Why is there a temperature difference between the set temperature and the actual water temperature in my Cooper & Hunter GRS-C3.5/A1-K?
If the water temperature differs from the set temperature on the wired controller when the Cooper & Hunter heat pump stops heating, it could be due to a low ambient temperature. In this case, the controller limits the maximum temperature of the heating water by heat pump. The water may be heated independently to specified value by the auxiliary electric heater.
Why does my Cooper & Hunter GRS-C3.5/A1-K make a water flowing sound during operation?
During operation, the swooshing or fizzing sound you hear in your Cooper & Hunter Heat Pump is the normal flow of refrigerant.
General| Brand | Cooper & Hunter |
|---|---|
| Model | GRS-C3.5/A1-K |
| Category | Heat Pump |
| Language | English |
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