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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: My MIDDLEBY speed control is showing an error code of "Err1", what does this mean?
Answer:
If the motor begins to move and you receive error 1 (ERR 1) typically this refers to an issue with the feedback sensor that is located on top of the motor or the speed control is configured for the wrong PPO (pulse per oven) setting. Check if the feedback sensor is positioned properly next to the magnet. Next check if the wires are installed correctly (white wire connects to COUNT, red wire connects to +5V and black wire connects to COM). If you have a Groschopp motor, the blue wire connects to COUNT, brown wire connects to +5V and orange wire connects to COM. Typically the speed control PPO setting should be at 8 for our old style motor and 16 for the new Groschopp universal motor if you have a PS360. For a PS570, the speed control PPO setting should be at 10 for our old style motor and 15 for the new Groschopp universal motor. However you can verify these settings as they are printed on the speed control. If the motor doesn't turn at all and you receive an error 1 (ERR 1), the check the motor brushes. If everything is correct, and you are still having issues, replace the sensor.
Question: My MIDDLEBY speed control is showing an error code of "Err2", what does this mean?
Answer:
Error 2 typically refers to an issue with the motor overamping or the speed control could be sensing too much voltage across terminals ARM+ and ARM-. Most likely you installed the wires on the wrong terminals but there could be an issue with the motor as well.
Question: My MIDDLEBY speed control is showing an error code of "Err3", what does this mean?
Answer:
Error 3 typically refers to the speed control malfunctioning. Replace the speed control.
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 thickness of a business card.
Question: What PPO, Rate, and preset should the MIDDLEBY 37337 speed control be set at when using the Groschopp universal motor on a PS570 oven?
Answer:
PPO: 713
Rate: 7056
Preset: 0015
Dip switch setting: 1 and 4 are on. Everything else is off.
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: My MIDDLEBY speed control is showing an error code of "Err1", what does this mean?
Answer:
If the motor begins to move and you receive error 1 (ERR 1) typically this refers to an issue with the feedback sensor that is located on top of the motor or the speed control is configured for the wrong PPO (pulse per oven) setting. Check if the feedback sensor is positioned properly next to the magnet. Next check if the wires are installed correctly (white wire connects to COUNT, red wire connects to +5V and black wire connects to COM). If you have a Groschopp motor, the blue wire connects to COUNT, brown wire connects to +5V and orange wire connects to COM. Typically the speed control PPO setting should be at 8 for our old style motor and 16 for the new Groschopp universal motor if you have a PS360. For a PS570, the speed control PPO setting should be at 10 for our old style motor and 15 for the new Groschopp universal motor. However you can verify these settings as they are printed on the speed control. If the motor doesn't turn at all and you receive an error 1 (ERR 1), the check the motor brushes. If everything is correct, and you are still having issues, replace the sensor.
Question: My MIDDLEBY speed control is showing an error code of "Err2", what does this mean?
Answer:
Error 2 typically refers to an issue with the motor overamping or the speed control could be sensing too much voltage across terminals ARM+ and ARM-. Most likely you installed the wires on the wrong terminals but there could be an issue with the motor as well.
Question: My MIDDLEBY speed control is showing an error code of "Err3", what does this mean?
Answer:
Error 3 typically refers to the speed control malfunctioning. Replace the speed control.
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 thickness of a business card.
Question: What PPO, Rate, and preset should the MIDDLEBY 37337 speed control be set at when using the Groschopp universal motor on a PS570 oven?
Answer:
PPO: 713
Rate: 7056
Preset: 0015
Dip switch setting: 1 and 4 are on. Everything else is off.