Water protection system - Miele W1215

E 97 is an error code that indicates a dry fire protection system has been activated in your Intex Pure SPA. This means that the spa has sensed that there is not enough water in the system, and it has automatically shut down the heater to prevent damage.
To solve this problem, you will need to add more water to the spa. Once the water level is above the minimum level required for safe operation, the dry fire protection system should reset itself automatically.
It is not recommended to run the filtration and the bubbles or jets without enough water in the system as it can cause damage to the pump and other components. Therefore, make sure to add enough water before turning on any functions of the spa.
Also, make sure to check for any other causes that may have led to the water level dropping too low, such as a leak or drainage issue. If you continue to experience issues, refer to the owner's manual or contact Intex customer support for further assistance.

system anti-freeze = type that fits your vehicle and the correct mixture

The entire cooling system holds 13.1 quarts. This includes antifreeze and water. Install no more than 9 quart 5 oz maximum of antifreeze and the rest is water. This will give you a 70% antifreeze and 30% water in the coolant system. You will have minus 45 degrees F or colder protection. Minimum antifreeze added would be 6 quart 18 oz and the rest is water. This would give you the minimum protection needed for your coolant system. If you live up in the colder climates, I would go with the 70% to 30% ratio of antifreeze to water. This is for the 3.1 L 6 cyl engine only.

go to system set up go to freeze protect then highlight what features or pumps you want to freeze protect if you have a autocover careful of features that will fill the cover with water

It normally will heat up with pump moving water, once the threshold is achieved - system will come out of its Freeze protection mode and will begin to work as programmed. If there is a heat call, heater will come on.
You can also locate the sensors, both the Water & Air (they need to be very close in temperature for this to work) then place them in water warmer than the actual ambient temp, & above the temp that triggers "Freeze".

Oh dear! Protection system has detected a short in the main power amp. The water has caused a great deal of damage. You will have to replace all the parts that have been damaged. Your nose will lead you to where to look.

The cooling system in your vehicle is filled with DEX-COOL engine coolant. This coolant is designed to remain in your vehicle for 5 years or 150,000 miles (240 000 km), whichever occurs first, if you add only DEX-COOL extended life coolant.

A 50/50 mixture of clean, drinkable water (if the water in your area is of poor quality, it is recommended you use distilled or de-ionized water) and DEX-COOL coolant will:

• Give freezing protection down to -34°F (-37°C).
• Give boiling protection up to 265°F (129°C).
• Protect against rust and corrosion.
• Help keep the proper engine temperature.
• Let the warning lights and gauges work as they should.

Hope this information helps

NEMA 3R protects against falling water down on top of enclosure, NEMA 4 protects against hose directed water. See reference https://www.nema.org/Products/Documents/nema-enclosure-types.pdf

bad low coolant switch or still low on coolant.

Engine Cooling The cooling system components are the:

• engine coolant temperature sensor (ECT sensor) (12A648)
• radiator (8005)
• degas bottle (8A080)
• radiator draincock (8115)
• water pump (8501)
• water temperature indicator sender unit (10884)
• water thermostat (8575)
• dual speed fan motor assembly

The water pump circulates the coolant.
The water thermostat:

• controls the engine coolant temperature.
• allows quicker engine warm-up.

The degas bottle:

• provides a location for fill.
• contains coolant expansion and system pressurization.
• provides air separation during operation.
• replenishes the engine coolant to the system.

The fan motor (8C607):

• operates only when the ignition switch is in the RUN position.
• will not operate with the switch in the OFF position.

The engine coolant flows:

• from the lower radiator hose (8286) to the water pump.
• from the water pump to the engine block and the cylinder heads.

A closed water thermostat returns the engine coolant to the water pump; an open water thermostat allows the engine coolant to flow to the radiator.
Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.
When adding engine coolant, use a 50/50 mixture of clean, drinkable water and engine coolant.
To maintain the integrity of the coolant and the cooling system: