1. Undersized unit – If the heat pump model is too small for your pool, it may take much longer to heat or may not reach the desired temperature.
2. Cold environment – Heat pump efficiency decreases in colder weather, which can reduce heating performance.
3. Poor installation location – If the unit is installed in an area with limited airflow, it won’t be able to operate at full capacity.
4. Incorrect plumbing – If the inlet and outlet pipes are connected in reverse, the heat pump will not be able to heat properly.
5. No pool cover – Without a pool cover, heat loss is significant and insulation is poor, which greatly reduces heating efficiency.

There is minimum water flow rate required for each models.

• 12,000BTU requires 343GPH
• 16,000BTU requires 454GPH
• 18,000BTU requires 528GPH

Yes, it is compatible. It uses a titanium heat exchanger that is corrosion-resistant.

The HEX012-HEX018 unit currently does not support WiFi control and has no mobile app currently.

Error E03 indicates insufficient water flow into the heat pump. Check if your pool pump’s flow rate meets the standard. Are you using a diverter valve that reduces flow rate? Is the piping installed correctly? Are there any blockages in the pipes?

The screen is locked. Press and hold the power button for more than 3 seconds to unlock it, then operate as normal.

The condensate pipe is not installed. The condensate pipe needs to be installed to ensure proper drainage and prevent water accumulation that may affect operation.

If the your pump flow rate is much higher than the heat pump’s requirement, a bypass valve can be installed. This helps manage the pool system more effectively.

It should be placed on a flat surface with 50-100 cm of clearance at the air outlet. Install it in a well-ventilated area.

Water pipes are not provided. Customers need to prepare them themselves.

• HEX012: Rated voltage 115V, rated current 7.3A – plug-and-play ready.
• HEX016: Rated voltage 115V, rated current 11.9A – plug-and-play ready.
• HEX018: Rated voltage 115V, rated current 12.6A – plug-and-play ready.

Yes, a pool cover improves heating efficiency and reduces heat loss, especially during cold nights, which helps lower operating costs.

To maintain optimal heat exchange efficiency, regularly clean the heat exchanger surface and air filter to prevent dust, leaves, or debris from blocking heat dissipation and air intake.

During cold seasons or when not in use for extended periods, drain all water from the unit to prevent freezing and damage to the heat pump pipes.

1. Undersized unit – If the heat pump model is too small for your pool, it may take much longer to heat or may not reach the desired temperature.
2. Cold environment – Heat pump efficiency decreases in colder weather, which can reduce heating performance.
3. Poor installation location – If the unit is installed in an area with limited airflow, it won’t be able to operate at full capacity.
4. Incorrect plumbing – If the inlet and outlet pipes are connected in reverse, the heat pump will not be able to heat properly.
5. No pool cover – Without a pool cover, heat loss is significant and insulation is poor, which greatly reduces heating efficiency.

They are used to connect the power cables of the water pump. Once connected, the heat pump can act as the power source for the pump, enabling simultaneous start/stop. This requires both the pump and heat pump to be on the same voltage.

OFF + sun icon indicates the unit is actually on.

ON without sun icon indicates the unit is in standby mode.

Yes, it is compatible. It uses a titanium heat exchanger that is corrosion-resistant.

There is minimum water flow rate required for each models.

• 22,000BTU requires 660GPH
• 35,000BTU requires 1188GPH
• 55,000BTU requires 1717GPH
• 75,000BTU requires 2377GPH
• 100,000BTU requires 5547GPH

The customer needs to connect L1, L2, and ground wire on the left side. Terminal screws must be tightened. Pictures have been provided.

• HEX022: Voltage 115V, rated current 12.75A, max current 15.5A. Recommended circuit breaker: 18A or higher.
• HEX035: Voltage 115V, rated current 15A, max current 17A. Recommended circuit breaker: 18A or higher.
• HEX055: Voltage 220V, rated current 13.5A, max current 15.5A.Recommended circuit breaker: 18A or higher.
• HEX075: Voltage 220V, rated current 20A, max current 23A. Recommended circuit breaker: 25A or higher.
• HEX100: Voltage 220V, rated current 30A, max current 32A. Recommended circuit breaker: 40A or higher.

• HEX022: 0–25m use ≥12 AWG; 25–50m use ≥10 AWG; 50–100m use ≥8 AWG
• HEX035: 0–25m use ≥12 AWG; 25–50m use ≥10 AWG; 50–100m use ≥8 AWG
• HEX055: 0–25m use ≥12 AWG; 25–50m use ≥10 AWG; 50–100m use ≥8 AWG
• HEX075: 0–25m use ≥10 AWG; 25–50m use ≥8 AWG; 50–100m use ≥6 AWG
• HEX100: 0–25m use ≥8 AWG; 25–50m use ≥6 AWG; 50–100m use ≥4 AWG

First, check if your pump’s flow rate meets requirements. Then, check if a bypass valve is reducing flow into the heat pump. Finally, the issue can be resolved via backend settings. Enter setting mode, click on Factory Parameter, enter password 998, change the value of P2 mode to from 0 to 1, and save to restart.

The display has short-circuited and needs to be replaced.

Yes, a pool cover improves heating efficiency and reduces heat loss, especially during cold nights, which helps lower operating costs.

The condensate pipe is not installed. The condensate pipe needs to be installed to ensure proper drainage and prevent water accumulation that may affect operation.

To maintain optimal heat exchange efficiency, regularly clean the heat exchanger surface and air filter to prevent dust, leaves, or debris from blocking heat dissipation and air intake.

During cold seasons or when not in use for extended periods, drain all water from the unit to prevent freezing and damage to the heat pump pipes.