To test probe and air sensor | Alto-Shaam 750-TH-II guide

Serv ice

TROUBLE SHOOTING CHECKLIST

Error
code	description	possible cause

E-10	cavity air sensor shorted	Cavity air sensor reading < 5°F. Verify sensor integrity.
		See sensor test instructions below.
E-11	cavity air sensor open	Cavity air sensor reading > 517°F. Verify sensor integrity.
E-11	cavity air sensor open	See sensor test instructions below.
		See sensor test instructions below.
E-20	product probe is shorted	Product probe reading < 5°F. Verify sensor integrity.
E-20	Oven will cook in time only	See sensor test instructions below.
	Oven will cook in time only	See sensor test instructions below.
E-21	product probe is open	Product Probe reading > 517°F. Verify sensor integrity.
E-21	Oven will cook in time only	See sensor test instructions below.
	Oven will cook in time only	See sensor test instructions below.
E-30	under temperature	Unit has not reached set-point for more than 90 minutes.
		Unit has been higher than 25°F above the maximum cavity set-point for
E-31	Over temperature	more than 2 minutes. Note: Holding Cabinets with this error code are
		more than 145°F higher than the maximum set-point.
E-50	Temp. measurement error	Contact factory.
E-51	Temp. measurement error	Contact factory.
E-60	real time clock error	Data set to factory default. Ensure that date and time are correct if applicable.
E-61	real time clock error	Contact factory.
	configuration connector	Refer to wiring diagram for the particular model and ensure dip switches on
E-70	configuration connector	the control match the settings called out on the WD. If the dip switch settings
E-70	error (dIp switch)
	error (dIp switch)	are correct according to the print replace the control.
		are correct according to the print replace the control.
E-78	Voltage low	Voltage below 90 VAC on a 125 VAC unit, or below 190 VAC on a
		208-240 VAC unit. Correct voltage.
E-79	Voltage high	Voltage over 135 VAC on a 125 VAC unit, or over 250 VAC on a
		208-240 VAC unit. Correct voltage.
E-80	EEprOM Error	Ensure that all temperatures and times are properly set.
		Contact factory if problem persists.
E-81	EEprOM Error	Contact factory.
E-82	EEprOM Error	Contact factory.
E-83	EEprOM Error	Contact factory.
E-85	EEprOM Error	All timers, if previously on, are now off. Possible bad EEPROM.
E-86	EEprOM Error	Stored HACCP memory corrupted. HACCP Address reset to 1. Possible bad
		EEPROM. Contact factory if problem persists.
E-87	EEprOM Error	Stored offsets corrupted. Offsets reset to 0. Control may need a recalibration.
		Possible bad EEPROM. Contact factory if problem persists.
E-88	EEprOM Error	All timer set-points are reset to 1 minute. Timers, if previously on, are now
		off. Possible bad EEPROM.
E-90	Button stuck	A button has been held down for >60 seconds. Adjust control. Error will
		reset when the problem has been resolved.
E-dS	datakey error	Datakey digital signature incompatible. Cycle power, and install compatible
		Datakey if error persists.
E-dT	datakey error	Datakey incompatible with control. Install compatible Datakey.
E-du	datakey unplugged	Install Datakey and cycle power to control to clear error.

Note: If in doubt, always cycle the power to the control and contact factory if the problem persists.

To test probe and air sensor:

Test probe and air sensor by placing sensor in ice water bath and using an ohmmeter set on the ohm scale. The reading should be 100 ohms resistance. If it is more than 2 ohms higher or lower, sensor needs to be replaced.

TH-IIseries • installation/operation/service manual - pg. 17

750-TH-II specifications

The Alto-Shaam 750-TH-II is a state-of-the-art piece of cooking equipment designed for commercial kitchens seeking high performance, efficiency, and versatility. Known for its innovative technologies, this combitherm oven combines the functions of steaming, baking, and roasting, allowing chefs to prepare a wide array of dishes with remarkable precision.

One of the standout features of the 750-TH-II is its advanced digital control system, which offers an intuitive interface for operators. The touchscreen controls provide simple navigation and programming, ensuring that chefs can easily adjust settings for different cooking methods. The programmable recipe feature allows for the storing of up to 1,000 recipes, streamlining the cooking process and ensuring consistency in food quality.

The oven also boasts a unique Halo Heat technology, which utilizes a patented heating system that evenly distributes heat throughout the cooking chamber. This radiant heat cooking method helps retain moisture in food, enhancing the overall flavor and texture of dishes. The 750-TH-II is designed to maintain stable temperatures, reducing the risk of overcooking and ensuring optimal results every time.

With its spacious cooking capacity, the Alto-Shaam 750-TH-II can accommodate large quantities of food, making it ideal for busy restaurants, catering operations, and institutional kitchens. The oven's multiple rack positions allow operators to customize their cooking configurations, while its two-speed fan ensures optimal airflow for even cooking across all levels.

In terms of energy efficiency, the 750-TH-II incorporates insulation that minimizes heat loss, contributing to reduced energy consumption. This not only lowers operational costs but also aligns with sustainability goals, making it an eco-friendly choice for commercial kitchens.

Furthermore, the easy-to-clean features of the Alto-Shaam 750-TH-II simplify maintenance. Its removable water reservoir and self-cleaning options help save valuable time in busy kitchen environments.

In conclusion, the Alto-Shaam 750-TH-II is a versatile, high-performance combitherm oven that combines innovative technology with practical functionalities. Its user-friendly digital controls, efficient cooking methods, large capacity, and easy maintenance make it an essential tool for any commercial kitchen looking to elevate their culinary offerings while optimizing operational efficiency.

Alto-Shaam 750-TH-II manual To test probe and air sensor, Error Code Description Possible cause

Models: 750-TH-II

Serv ice

TROUBLE SHOOTING CHECKLIST

Error

code

description

possible cause

product probe is shorted

configuration connector

EEprOM Error

Button stuck

datakey error

To test probe and air sensor:

750-TH-II specifications