Troubleshooting

The following pages are provided to help determine the cause of problems with operation of the brewers and to indicate the appropriate solution for the problems. For each problem, the possible causes should be checked in the order shown until the exact nature of the problem is determined.

The following procedures must be performed by a qualified service technician. Disconnect power to machine before servicing.

Error Messages

Problem	Possible Causes	Service Check	Remedy

ER1	• Fill valve on for over	• Check system for	• Correct any leaks and reset
	6 min. (This occurs	water leaks.	controller.
	during initial fill on some
	units – see Initial
	Start-up.)

ER2	• Thermistor failure or	• Ensure that connector	• Secure connections and reset
	loose connections in	is securely attached to	controller. If error reoccurs,
	thermistor circuit.	controller and that	replace thermistor.
		thermistor is securely
		connected.

ER3	• Thermistor is reading	• Check tank	• Replace thermistor.
	out of range.	temperature.

ER4	• No heat is detected	• See Heating Problems	• See Heating Problems

Filling Problems

Problem	Possible Causes	Service Check	Remedy

Overfilling water	• Fill valve not sealing	• Check to see if water	• Disassemble valve and clean
tank when power	properly.	enters tank continuously	out debris. Valve may need to
is Off		(usually at a slow rate).	be replaced.
is Off

Overfilling water	• High electrode coated	• Disconnect electrode	• Remove electrode assembly
tank only when	with lime or faulty.	wire at quick connect	and clean the probes. If
power is On		(brown wire). Connect a	problem is not corrected,
power is On		wire from the quick con-	replace electrode assembly.
		wire from the quick con-	replace electrode assembly.
		nect to the cabinet body.
		If filling stops, this is the
		error cause.
	• Connection from	• Check to ensure	• Make connection to tank
	control board to tank	connection (red	secure.
	body faulty.	wire) is secure.
	• Control board is faulty.	• Secure connection from	• Replace control board.
		control board to metal
		enclosure does not
		stop filling.

Shuttle Brewers & Airpot/Shuttle Brewers

Page 17

AM-344-04 specifications

The Grindmaster AM-344-04 is a robust and versatile appliance designed primarily for coffee brewing in commercial settings. This machine stands out in the industry due to its combination of advanced features, user-friendly design, and exceptional brewing capabilities, making it an essential addition for coffee shops, restaurants, and cafes that prioritize quality and efficiency.

One of the main features of the AM-344-04 is its programmable brewing system, which allows users to set precise brewing times and batch sizes. This customization ensures that each pot of coffee is brewed to perfection, catering to diverse customer preferences. The machine can brew up to 12 cups of coffee at a time, ideal for busy environments that demand high throughput.

The Grindmaster AM-344-04 is equipped with a digital control panel that simplifies operation for users. The intuitive interface provides real-time feedback on brewing cycles, water temperature, and brew times, enabling baristas to monitor the process closely. Additionally, the machine's high-efficiency heating element ensures rapid water heating, reducing wait times and increasing productivity, especially during peak hours.

Another notable characteristic of the AM-344-04 is its dual-funnel design, which allows for simultaneous brewing of different coffee blends. This feature is particularly beneficial for establishments that offer a variety of coffee types, as it enables operators to meet diverse customer needs without compromising on quality or service speed.

In terms of build quality, the Grindmaster AM-344-04 features a durable stainless-steel construction that not only enhances its aesthetic appeal but also ensures longevity. The machine is designed to withstand the rigors of daily use in a bustling environment, making it a reliable choice for coffee professionals.

Moreover, the AM-344-04 incorporates advanced brewing technology, including precision spray head systems that evenly distribute water over the coffee grounds. This feature enhances extraction, resulting in a richer and more flavorful brew. Additionally, the machine includes a built-in water filtration system, which helps to improve water quality, further enhancing the taste of the coffee.

Lastly, the Grindmaster AM-344-04 is designed with easy maintenance in mind. Its removable components facilitate quick cleaning, ensuring that the machine remains in optimal condition for high-quality brewing. This attention to ease of use and maintenance makes the AM-344-04 a smart investment for any coffee service operation looking to elevate its offerings. Whether you are a seasoned barista or a new coffee shop owner, the Grindmaster AM-344-04 promises to deliver an exceptional brewing experience.