How to Resolve EcoCube™ Error Codes: HEAT PUMP AMB, COND, FLOW, LOW P, and HIGH P

Getting error codes on your SpaNet® EcoCube™ Heat Pump? From HEAT PUMP AMB to HIGH P, learn how to diagnose and fix these issues step by step, ensuring your system operates smoothly.

Ecocube

Important: A licensed electrician must carry out all electrical work on your spa. Any electrical information included here, whether it is troubleshooting or other instructions, is provided for use by a licensed electrician only. Local electrical codes supersede any information found here.

If your spa keypad displays HEAT PUMP AMB, COND, FLOW, LOW P, or HIGH P errors, it could be a sign of a problem with your EcoCube™ Heat Pump.

Properly addressing them can save you downtime and costly repairs. This guide explains what each error means, and provides clear steps to fix it.

Key Takeaways

  • Understand Specific Error Codes: Learn the meaning behind errors like HEAT PUMP AMB, COND, FLOW, LOW P, and HIGH P.
  • Troubleshoot Effectively: Use clear, actionable steps to check connections, sensors, and other components.
  • Know When to Replace Components: Identify situations where cables or refrigerants require attention or replacement.
  • Environmental Factors Matter: Manage temperature and water flow to avoid recurrent issues.
  • Seek Professional Help When Needed: Understand when to consult a certified technician for advanced repairs.

To view or download the SpaNet® EcoCube™ Manual, please click the button below.

How to Resolve HEAT PUMP AMB on EcoCube™ Heat Pump

The HEAT PUMP AMB error on your EcoCube™ Heat Pump typically indicates an issue with the ambient temperature sensor. This could be due to a loss of signal or a corrupted signal.

Follow these simple step-by-step instructions to troubleshoot and resolve the issue effectively.

Step 1. Check the Ambient Temperature Sensor Connection

  • Locate the ambient temperature sensor on the heat pump.
  • Ensure that it is securely connected to the heat pump’s circuit board.

Step 2. Inspect the Data Cable for Damage

  • Examine the data cable for visible wear, fraying, or damage.
  • Ensure the data cable is securely connected to the SV spa control’s EXP2 socket.

Step 3. Disconnect and Reconnect the Data Cable

  • Carefully unplug the data cable from the SV spa control.
  • Reconnect it securely to the EXP2 socket.

Step 4. Reset the Mains Power

  • Turn off the main power.
  • Turn the power back on and check if the error is resolved.

Step 5. Replace the Data Cable if the Problem Persists

  • If the issue is unresolved after following the steps above, replace the data cable.
  • Use a double-shielded CAT5 or CAT6 Ethernet cable for the replacement to ensure durability and proper signal transmission.

How to Resolve HEAT PUMP COND on EcoCube™ Heat Pump

The HEAT PUMP COND error on your EcoCube™ Heat Pump signals a problem with the condenser temperature sensor, often caused by a lost or corrupted signal.

Follow this step-by-step guide to troubleshoot and resolve the error efficiently.

Step 1. Check the Condenser Temperature Sensor Connection

  • Locate the condenser temperature sensor on the heat pump.
  • Verify that it is securely connected to the heat pump’s circuit board.

Step 2. Inspect the Data Cable for Damage

  • Carefully inspect the data cable for visible signs of wear, fraying, or physical damage.
  • Ensure the data cable is properly connected to the SV spa control’s EXP2 socket.

Step 3. Disconnect and Reconnect the Data Cable

  • Unplug the data cable from the SV spa control's EXP2 socket.
  • Reconnect it securely to ensure a proper connection.

Step 4. Reset the Mains Power

  • Switch off the main power.
  • Turn the power back on to see if the error is resolved.

Step 5. Replace the Data Cable if the Problem Persists

  • If the above steps do not resolve the issue, replace the data cable.
  • Use a double-shielded CAT5 or CAT6 Ethernet cable for the replacement to ensure a reliable and stable connection.

How to Resolve HEAT PUMP FLOW on EcoCube™ Heat Pump

The HEAT PUMP FLOW error on the EcoCube™ Heat Pump occurs when there is insufficient or no water flow to close the flow switch. Even if the water flow is restored, the heat pump will not operate until the main power to the SV spa control has been reset.

Whether it's a new installation or an existing setup, follow these step-by-step instructions to resolve the issue effectively.

For New Installations

Step 1. Check Isolation and Bypass Valves

Ensure that the isolation and bypass valves are positioned correctly according to the plumbing diagram provided in the manual.

Step 2. Confirm Water Flow into the Filter Box

Verify that the water level is sufficient and that water is flowing freely into the filter box.

Step 3. Check Water Flow Returning to the Spa

Confirm there is adequate water flow returning to the spa. If no flow is detected, bleed any potential air locks from the pipework.

Step 4. Inspect the Pipework and Flow Direction

  • Trace the pipework to ensure proper water flow:
  • Water should flow out of the spa into the bottom inlet pipe on the heat pump.
  • Water should flow out of the top outlet pipe on the heat pump and return to the spa.
  • If the heat pump has been plumbed in reverse, correct the plumbing or rotate the flow switch 180 degrees to match the flow direction.

Step 5. Check the Filtration Pump

  • Ensure the filtration pump is working properly.
  • If not, troubleshoot the pump and take corrective action to restore operation.

For Existing Installations

Step 1. Check Spa Water Level

  • Verify that the water level is adequate.
  • Refill the spa if necessary.

Step 2. Clean or Replace Filter Cartridges

Dirty or clogged filters can impede water flow. Clean or replace the filter cartridges as needed.

Step 3. Bleed Air Locks from the Pipework

If the spa has recently been emptied or refilled, check for air locks in the pipework and bleed them to restore proper water flow.

Step 4. Inspect the Filtration Pump

Check that the filtration pump is functioning correctly and has not seized or stalled. Troubleshoot and repair the pump if necessary.

Final Step: Reset the Mains Power

After completing the above checks and corrections, reset the mains power to the SV spa control to clear the flow error and restore the heat pump operation.

How to Resolve HEAT PUMP LOW P on EcoCube™ Heat Pump

The HEAT PUMP LOW P error on the EcoCube™ Heat Pump occurs when there is no signal from the low-pressure switch or when the refrigerant gas charge is insufficient.

Follow this step-by-step guide to troubleshoot and resolve the problem.

Step 1. Check the Low-Pressure Switch Connection

  • Locate the low-pressure switch on the heat pump.
  • Verify that it is securely connected to the heat pump’s circuit board.
  • If the connection is loose, secure it properly.

Step 2. Inspect the Refrigerant Level

  • If the heat pump has a pressure gauge fitted, check the refrigerant level.
  • Low refrigerant levels can cause the low-pressure error.

Step 3. Contact a Refrigeration Mechanic for Repairs

If the refrigerant level is low or the pressure gauge indicates insufficient charge:

  • Have the heat pump inspected by a qualified refrigeration mechanic.
  • They can check for refrigerant leaks, recharge the refrigerant, and ensure the system is functioning correctly.

How to Resolve HEAT PUMP HIGH P on EcoCube™ Heat Pump

The HEAT PUMP HIGH P error on the EcoCube™ Heat Pump is triggered when there is no signal from the high-pressure switch or when refrigerant pressure becomes too high.

Common causes include insufficient water flow, extreme environmental conditions, or air flow restrictions.

Follow this step-by-step guide to troubleshoot and resolve the issue.

Step 1. Check the High-Pressure Switch Connection

  • Locate the high-pressure switch on the heat pump.
  • Ensure it is securely connected to the heat pump’s circuit board.
  • If the connection is loose, secure it properly.

Step 2. Confirm Sufficient Water Flow

  • Verify that water is flowing adequately through the heat pump.
  • Clean or replace filter cartridges to ensure water flow is unobstructed.

Step 3. Check Ambient Air and Water Temperatures

Confirm that both ambient air and water temperatures are within the heat pump's operational limits.

Step 4. Inspect the Exhaust Fan

  • Ensure the exhaust fan is functioning properly.
  • A faulty or blocked fan can restrict air circulation, leading to high refrigerant pressure.

Step 5. Address Environmental and Location Factors

  • Check for obstructions such as fences, plants, or walls that may restrict airflow around the heat pump.
  • If the heat pump is in direct sunlight, consider providing shade or moving it to a more suitable location to improve cooling performance.

Important reminders:

  • In extreme environmental conditions (ambient temperatures >36°C) or when spa water temperature exceeds 34°C, the heat pump may shut down due to high refrigerant pressure.
  • To prevent this, use the heat pump for cooling during cooler parts of the day or night. Avoid using the cooling function during extreme heat.
  • If the heat pump shuts down on a high-pressure error, it may enter a standby mode for 2 hours. Once the system cools, reset the main power to resume operation.

How to Resolve HEAT PUMP COMP on EcoCube™ Heat Pump

The HEAT PUMP COMP error on the EcoCube™ Heat Pump indicates that the compressor's exhaust gas has exceeded its working temperature limit of 100°C.

This can happen due to issues with water flow, the exhaust fan, environmental conditions, or a mechanical fault.

Follow this step-by-step guide to troubleshoot and resolve the problem.

Step 1. Check Ambient Air and Water Temperatures

Ensure that both the ambient air and water temperatures are within the operational limits of the heat pump.

Step 2. Inspect the Exhaust Fan

Verify that the exhaust fan is functioning properly.

Step 3. Confirm Sufficient Water Flow

  • Ensure there is adequate water flow through the heat pump.
  • Clean or replace the filter cartridges if they are clogged or dirty to allow proper water circulation.

Step 4. Allow the Compressor to Cool

  • Turn off the mains power to the heat pump and let it rest for 1 hour.
  • This will allow the compressor to cool down. After cooling, turn the power back on and test the system.

Step 5. Inspect the Data Cable Connection

  • Check the data cable for visible damage.
  • Ensure the cable is securely connected to the SV spa control’s EXP2 socket.
  • Replace the data cable if it appears damaged or faulty.

Step 6. Check the Circuit Board for the Latched Compressor Relay

  • Disable the heat pump operation and check if the compressor turns off.
  • If the compressor continues running, the relay on the circuit board may be latched. Replace the circuit board if necessary.

Step 7. Inspect for Refrigerant Leakage

  • If the heat pump has a pressure gauge, check for signs of refrigerant leakage.
  • If leakage is detected or if no pressure gauge is available, contact a qualified refrigeration mechanic to inspect the system, repair any leaks, and recharge the refrigerant if needed.

How to Resolve HEAT PUMP COMP on EcoCube™ Heat Pump

The HEAT PUMP COMP error on the EcoCube™ Heat Pump indicates that the compressor's exhaust gas has exceeded its working temperature limit of 100°C.

This can happen due to issues with water flow, the exhaust fan, environmental conditions, or a mechanical fault.

Follow this step-by-step guide to troubleshoot and resolve the problem.

Step 1. Check Ambient Air and Water Temperatures

Ensure that both the ambient air and water temperatures are within the operational limits of the heat pump.

Step 2. Inspect the Exhaust Fan

  • Verify that the exhaust fan is functioning properly.
  • If the fan is not working, troubleshoot or replace it to restore airflow and prevent overheating.

Step 3. Confirm Sufficient Water Flow

  • Ensure there is adequate water flow through the heat pump.
  • Clean or replace the filter cartridges if they are clogged or dirty to allow proper water circulation.

Step 4. Allow the Compressor to Cool

  • Turn off the mains power to the heat pump and let it rest for 1 hour.
  • This will allow the compressor to cool down. After cooling, turn the power back on and test the system.

Step 5. Inspect the Data Cable Connection

  • Check the data cable for visible damage.
  • Ensure the cable is securely connected to the SV spa control’s EXP2 socket.
  • Replace the data cable if it appears damaged or faulty.

Step 6. Check the Circuit Board for the Latched Compressor Relay

  • Disable the heat pump operation and check if the compressor turns off.
  • If the compressor continues running, the relay on the circuit board may be latched. Replace the circuit board if necessary.

Step 7. Inspect for Refrigerant Leakage

  • If the heat pump has a pressure gauge, check for signs of refrigerant leakage.
  • If leakage is detected or if no pressure gauge is available, contact a qualified refrigeration mechanic to inspect the system, repair any leaks, and recharge the refrigerant if needed.

In Summary

We hope this guide makes it easy to fix error messages on your SpaNet® EcoCube™ Heat Pump. With simple steps, you can understand and resolve each code quickly.

Regular maintenance helps keep your heat pump running smoothly, but for refrigerant or complex issues, be sure to contact a professional.

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