A: Yes – the system automatically adjusts between high and low elevations. No manual tuning required.

A: Scan the QR code printed on the heater for full operation tutorials.

A: Check two things:

Check for blockages at the auxiliary air inlet beside the ignition pin of the combustion chamber.

Verify whether the fuel tank is low on diesel and if there are air bubbles trapped inside the fuel line.

A: Try this troubleshooting sequence:

Power cycle – disconnect and reconnect the power supply, then try starting again.

Check voltage drop on the LCD display. Normal startup brings a voltage drop between 0.3V–1.2V, which is standard power draw from the ignition pin.

No voltage drop? → The ignition pin isn't opening. Try reconnecting the power.

Drop over 1.5V? → The negative power cable has a poor connection – check for loose ground.

Check the fuel pump – verify that diesel is actually coming out of the injector nozzle when the pump cycles.

If all the above checks out → the combustion chamber nozzle is clogged. Remove the fuel line from the combustion chamber and gently suck on it to see if it's clear.

A: This is caused by heavy carbon buildup inside the combustion chamber. You'll need to clean it out. Also check if the air intake pipe is crushed or if a dirty air filter accelerates carbon accumulation ( a clogged filter causes poor combustion and leads to carbon buildup ).

A: Check the error code on the LCD display and cross-reference it with the code chart in the user manual.

A: Open the housing and check where the motor might be rubbing. You may need to manually adjust the position of the motor impeller against rubbing contact points (housing, main circuit board or motor impeller). Do not over-tighten the heater mounting screws, as overtightening may jam the motor.

A: Check the fuse in the wiring harness, and verify the switch connector plug is fully seate

A: When you activate the water pump from the display, it doesn't kick in immediately. The pump waits until the aluminum heat exchanger reaches 90°C (194°F) – then it automatically turns on. If the aluminum body temperature exceeds 120°C (248°F) before the pump starts, the system will auto-dissipate heat. Once it drops back below 120°C –then the pump automatically turns on.

A: Yes – but you may need to swap out the stock pump.

For radiant floor systems (long pipe runs), we recommend using a 110V or 220V pump instead. The original 12V/24V pump may not have enough head pressure to push water through long floor loops. The replacement pump must have independent control and must not be wired to the heater’s main controller.

For standard wall-mounted radiators (shorter loops), the stock pump works fine – no replacement needed.

A: Yes – absolutely.

A: Refer to the multi-mode water heating options in the user manual and select your preferred setting. The system will automatically default to the last mode you used. No need to reselect every time.

A: The 9000W model uses a dual brushless motor design with two impellers – an inner impeller and an outer impeller.

Air-only mode: Both impellers work together to deliver full airflow.

Water-only mode: The inner impeller runs while the outer impeller stays off. This generates heat without blowing air – achieving 100% heat absorption for maximum water heating efficiency.

A: Because it's not just an air heater – it's a complete climate and water management system in one compact unit.

Here's what makes it the top choice:

Air-only mode – manual or automatic temperature control – set it and forget it.

Water-only mode – yes, fully independent. Works year-round – summer, winter, spring, fall. No more "heaters are only for winter."

180-liter (47-gallon) water heating capacity – unmatched in this product category.

Advanced ECU management – nearly perfect for RV applications.

Single-unit installation – one unit solves both cabin heat and hot water needs.

Simpler service and support – only one system to maintain, not two.

A: That depends on how you want to use the hot water. In the settings menu, there are 4 options for the 7000W setting and 6 options for the 9000W setting.  Each mode offers unique functions including constant water temperature, timed heating, simultaneous air + water heating, and more.

A: Yes – the 9000W model uses dual brushless motors for quieter operation, longer service life, and fully independent air and water operation.

Max water heating capacity: Approximately 180 liters (47 gallons)

Temperature control: Yes – you can set your desired water temperature and the system will maintain it – even in summer with the air side turned off.

A: Great question. Choose the 7,000W model for sedans and the 9,000W model for trucks In cold weather, lithium battery range drops significantly compared to normal temperatures. By installing the 9000W heater, you can:

Plumb it into the battery cooling loop – keeping the battery pack at optimal operating temperature.

Warm the cabin – stay comfortable during winter routes.

Extend driving range – a warm battery delivers more usable capacity.

Protect battery life – cold cycling damages lithium cells over time. Temperature control helps them last longer.

It's a smart investment for any EV fleet operating in cold climates – better range, better comfort, better battery health.