Troubleshooting and Technical Support

ALL SUGGESTIONS LISTED BELOW ARE PURELY SUGGESTIONS AND WE RECOMMEND A CERTIFIED TECHNICIAN TO PERFORM SUCH ACTIONS.

Problem: MIDDLEBY Temperature Controller Reads 909F Error

Resolution:
This refers to an open/disconnected probe or loose wires on the top terminals 7 and 8.

There are three causes for the 909F reading:
1. Thermocouple is disconnected.
2. Loose connection on the top terminals 7 and 8.
3. The heat from the wires caused burn marks on the contacts and therefore the contacts need to be cleaned.

Take a DC millivolt reading off of terminals 7 and 8 at room temp. The results should be between .03 and .6 DC Millivolts (mV) with room temperature between 68-74. If this reading isn't correct, you need part number 33984 - Replacement Temperature Probe for MIDDLEBY.

If connections are tight and the mV reading is good:
Disconnect the top terminals 7 and 8 and put a small 18 gauge jumper wire across those two terminals.
Pull the plunger/door switch so you can operate with the door being open.
Turn on the burner switch. If the temperature control goes to 909F, then you need to purchase a new temperature control, part number 47321 - Digital Temperature Controller for MIDDLEBY.

Be sure to check the MIDDLEBY axial cooling fans are working properly as they are a common culprit of this issue.


Problem: MIDDLEBY Motor & Fan Burner 27170-0011 continues to run after the oven is cooled down below 200 degrees

Resolution:
1. MIDDLEBY's temperature controller's cool-down relay is between contacts 9 and 10. With the electrical breaker off and no power to the unit, make sure there aren't any loose strands of wire touching those contacts., make sure there aren't any loose strands of wire touching those contacts. This can be done by removing the front screw of the temperature controller and looking at the back of the temperature controller at the labeled contacts. If 9 and 10 are checked with a meter, and it is showing the relay is closed, then it is likely that you will need to replace your temperature controller.
2. You could have a faulty on/off switch and replacing it with Middleby 46521 Switch Kit could solve the problem.
3. Check your thermocouple/temperature probe. With no power to the unit, take a DC millivolt reading off of terminals 7 and 8 at room temp. The results should be between .03 and .6 DC Millivolts (mV) with room temperature between 68-74. If this reading isn't correct, you need part number 33984 - Replacement Temperature Probe for MIDDLEBY.


Problem: What kind of glue should I use with my Lincoln 369823 Hall Effect Sensor Circuit Board?

Resolution:
Any super glue adhesive.


Question: What is the typical life span of a MIDDLEBY Gear Drive Motor for PS360?

Answer:
This depends on 3 factors:
1. Hours of use.
2. Temperature.
3. Speed / voltage

A motor sitting at room temperature and used a few hours a week at a speed of 12 minutes could last 50 years.
A motor running at 200 deg F used 14 hours a day at a speed of 3 minutes might last 2 years.

The cooler your equipment is, the longer it lasts! Be sure your MIDDLEBY cooling fans are working properly.


Question: What brushes are needed for the MIDDLEBY 47796 (gear motor with silver cap)?

Answer:
MIDDLEBY 45017 Brush Set Replacement


Question: What is the difference between a Middleby PS360Q motor and Middleby PS360 motor?

Answer:
The horse power, RPM, and mount are different. The standard PS360 motor has a welded base however the PS360Q motor has a cradle mount. The PS360Q motor is slightly longer, as a result, making a tighter fit.



Question: How can I determine if my Blodgett oven has a brushed or brushless conveyor motor?

Answer:
An easy identifier is if the motor has a molex connector plug at the end of it with 9 wires. If it does, then it is a Blodgett M10082 brushless motor. If the motor has 2-3 wires, then it is the Blodgett brushed motor.



Question: How do I install the Lincoln 369823 pickup hall effect sensor and Lincoln 369822 8-pole magnet?

Answer:
The Lincoln 369822 8-pole magnet is glued to the top of the motor. Make sure the thickness between the pickup hall sensor and the 8-pole magnet is the thicknesss of a business card.