Monogram Range F350 Error: Inverter Board Testing Guide... | appliancefaults.com

Technical Background:

The F350 error code on a Monogram F350 range typically indicates an issue with the inverter board, which provides power to the cooling fan. The MCU (Microcontroller Unit) monitors the fan speed and temperature. If the fan isn't running correctly, the MCU will trigger the error. The inverter board converts AC voltage from the main power supply to DC voltage for the fan.

Symptoms:

The homeowner reports that the range displays an F350 error code. The cooling fan may not be running, or the range shuts down prematurely during operation.

Possible Causes:

Failed Inverter Board
Cooling Fan Malfunction
Wiring Harness Damage
Overheating
MCU Communication Error

Solution:

1

Disconnect power to the range at the breaker panel.
2

Remove the range back panel using a 1/4-inch nut driver.
3

Locate the inverter board; it is typically near the cooling fan.
4

Use a multimeter to check for 120V AC input to the inverter board.
5

Verify the DC output voltage to the cooling fan (typically 12V DC or 24V DC).
6

If input voltage is present, but no output voltage exists, replace the inverter board.
7

Inspect the cooling fan for any physical obstructions or damage. If damaged, replace the fan.

Safety Warning:

Always disconnect power to the range at the breaker panel before performing any repairs. Follow Lock-Out/Tag-Out (LOTO) procedures. Be aware of high voltage components inside the range.

Prevention:

Regularly clean the area around the range to prevent dust and debris buildup, which can cause overheating. Inspect the cooling fan regularly for proper operation. Ensure proper ventilation around the range.

Expert Tip:

Some Monogram ranges have a service mode that can provide more detailed diagnostic information. Consult the service manual for instructions on how to enter service mode. Often holding the 'bake' and 'broil' buttons for 5 seconds will activate a diagnostic mode.

Frequently Asked Questions

•What is the correct DC voltage output that I should expect to see at the cooling fan connector?

The DC voltage output should typically be either 12V DC or 24V DC. Refer to the range's wiring diagram for the exact specification.

•Where can I find a replacement inverter board for my Monogram F350 range?

You can order a replacement inverter board from authorized Monogram parts distributors or online appliance parts retailers. Be sure to verify the part number before ordering.

•If the fan runs, but the F350 error persists, what else could be the issue?

If the fan runs but the error remains, it could be a communication issue with the MCU, a faulty temperature sensor, or the fan motor speed is out of spec. Check the wiring harness for damage and verify the temperature sensor readings using a multimeter.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct DC voltage output that I should expect to see at the cooling fan connector?

•Where can I find a replacement inverter board for my Monogram F350 range?

•If the fan runs, but the F350 error persists, what else could be the issue?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: