Maintaining Proper Water Flow

• It is important to operate and maintain your filter according to the manufacturer’s specifications. As a filter gets dirty, the water flow to the heat pump is reduced. The higher the pressure on the filter gauge, the lower the flow rate.
• Similar to a dirty filter, large amounts of debris in the pump basket can reduce water flow…Keep basket free of debris.
• Check for improper valve settings. A partially closed valve after the filter, or a full-open bypass around the heat pump, will cause insufficient water flow through the heat pump.
• If the conditions listed above remain unresolved, the water flow through the heat pump may be reduced to a point where internal safety devices shut the heat pump off. For example, should an “HP” or “Flo” code be observed on the display–either will prevent the heat pump from operating–insufficient water flow could be the cause. Before calling for service, always check the filter, the pump basket, and water valve positions. If the problem persists, call AquaCal Customer Support at 1-800-786-7751.
  • NOTE: During pool refinishing or acid washing, the water flow through the pool heat pump must be shut off until the process is completed, and the pool chemistry is once again in balance.

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