Document LTM0883 rev 2a

 

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Issues and Resolutions

WARNING - Failure to heed the following may result in injury or death.

  • Repairs must not be attempted by untrained or unqualified individuals.
  • The heat pump contains refrigerant under pressure. Repairs to the refrigerant circuit must not be attempted by untrained or unqualified individuals. Service must be performed only by qualified HVAC technicians. Recover refrigerant before opening the system.

CAUTION - Failure to heed the following may result in equipment damage.

  • Service by unauthorized personnel will void the factory warranty.

Please perform the following troubleshooting.

For further assistance, please contact the installing dealer. Or contact AquaCal® for a service partner in your area. See "Contacting AquaCal AutoPilot, Inc."

ClosedDisplay Panel Not Responding

  1. If the heat pump is controlled be an external controller, confirm the external controller settings. See "Operating Heat Pump (With an External Controller)"
  2. If the issue is still occurring, contact the installer or manufacturer of the external control device.

ClosedHeat Pumps Not Running

  1. Confirm equipment is receiving power. Is the heat pump display illuminated?
    • If not, confirm the main breaker (located at the power supply panel) and the disconnect switch (located near the heat pump) are both turned on.
    • If the display still does not illuminate, it is recommended that the heat pump installer or electrician confirms heat pump is receiving power.
  2. Confirm correct mode is selected. See "Setting Operating Mode"
  3. Confirm thermostat is set correctly. See "Setting Thermostats"
    • If heating the water, the thermostat should be set above the current water temperature.
    • If cooling the water, the thermostat should be set below the current water temperature.
  4. If an error code is displayed, diagnose and correct the cause of the code. See "Fault Codes"
  5. If the heat pump is using an external controller, the heat pump may not be set correctly to accept the controller’s signal.

ClosedHeat Pumps Tripping Breaker

  1. Have an electrician confirm breakers are in good condition and properly sized for the heat pump.
  2. Multiple heat pumps installed at the same site may benefit from special automatic sequencing controllers to avoid excessive power drops at start-up. See "Automatic Sequencing Controller"
  3. If a fault occurs immediately when the compressor starts, a qualified technician should evaluate the system.

 

ClosedHeat Pump Won’t Shut Off

Please Note

When heat pump is set to " OFF", the display will show either the water temperature or FLO.

  1. Confirm the heat pump has reached the desired temperature set on the thermostat. The heat pump will continue to run until the set temperature is reached.
  2. If the heat pump is using an external controller, it may not be set correctly.

ClosedHeat Pump Is Running, Not Heating

  1. If the heat pump is using an external controller, confirm it is set correctly.
  2. Confirm heat pump mode is set to HEA operating mode.
  3. Confirm thermostat is set to the desired water temperature.
  4. Confirm valves are correctly positioned to heat the correct body of water (either the pool or the spa). If heating a spa that overflows into a pool, confirm the spa is isolated when being heated (not flowing into the pool).
  5. Confirm heat pump is transferring heat into the water.
    • Measure the temperature of air discharge coming out of heat pump fan. If discharge air is between 8° to 10° colder than the outside ambient air (entering air), then the heat pump is moving heat into the water.
  6. If an error code is displayed, diagnose and correct cause of code. See "Fault Codes"
  7. Confirm that filter pump has a sufficient run-time. The heat pump will not run (or heat the water) without water flow. Heat Pump equipment will generally be set to run 24 hours a day in commercial applications.See "Initial Heating Recommendations"
  8. If heating a spa, deactivate air blower or venturi (if equipped) to allow for quicker heating times. For pools, deactivate water features, such as slides, waterfalls, or fountains to allow water to retain heat. Use of a liquid pool blanket product, such as an Aqua Blanket™, can also compensate for excessive heat loss. See "Liquid Blankets"

ClosedHeat Pump Is Running, Not Cooling (Reversing Models)

  1. If the heat pump is using an external controller, confirm the heat pump is programmed properly to allow for cooling. See "Operating Heat Pump (With an External Controller)"
  2. Confirm the heat pump mode is set to COO operating mode.
  3. Confirm the thermostat is set below the current water temperature.
  4. Confirm valves are correctly positioned to cool the correct body of water (either the pool or the spa). If cooling a spa that overflows into a pool, confirm the spa is isolated when being cooled (not flowing into the pool).
  5. If an error code is displayed, determine and correct the condition causing the code. See "Fault Codes"
  6. Confirm heat pump is transferring heat out of the water.
    • Measure the temperature of air discharge coming out of heat pump fan. If discharge air is between 8° to 10° warmer than outside ambient air (not coming out of heat pump), then the heat pump is moving heat out of the water.
  7. Confirm that filter pump has a sufficient run-time. The heat pump will not run (or cool the water) without water flow. Heat Pump equipment will generally be set to run 24 hours a day in commercial applications.See "Initial Cooling Recommendations"

ClosedWater Coming From Heat Pump

The water may be normal condensation produced as a by-product of the heat pump's refrigeration process. The heat pump can produce 8 to 10 gallons of condensation per day depending on the humidity of the ambient air. Determine if the water is condensation or a possible leak.

  1. If using chlorine or bromine as a pool / spa sanitizer, use a test strip in the water at heat pump to determine if sanitizer is present. If sanitizer is present, a leak may exist.
  2. Deactivate heat pump, leaving the filter pump on. After several hours, determine if water is still coming from the heat pump.