F'real FRLB4 - Blender Error Codes: Thermistors and Homing; Chamber and Scour Thermistor Errors; Homing Time-Out Errors

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A. Ensure the wires are seated in the connector securely.
B. Check the wiring harness for damage or breaks in the wiring insulaon.
C. Check the wiring on the LVCB. The connecon point on the LVCB is in the upper le corner and labeled as TB18.
Ensure the wires are securely in place in the connector and the board.
3. Measure the resistance of the thermistor at the control board. Disconnect the TB18 connector and measure the
resistance through the purple wires. It should measure 3K-10K ohms. If out of range, replace BF Steamer Heater (Parts
Manual: Heaters & Posion Motor).
Error 70: Chamber Thermistor Shorted or Open
TRIGGER: A short or open of the chamber thermistor is detected by the LVCB
1. Reset the blender by pressing “Regular” & “More Thick” buons together for 7 seconds to so-reset the blender.
2. Check the Chamber Thermistor wires and connector. The thermistor is located by removing the le side panel. The
thermistor is located at the lower le corner of the chamber. The wires are black and aached to the blending chamber
behind a small metal shield and a foam piece.
A. Ensure the wires are seated in the connector securely.
B. Check the wiring harness for water damage or breaks in the wiring insulaon.
C. Check the wiring on the Low Voltage Control Board (LVCB). The connecon point on the LVCB is in the upper le
corner and labeled as TB18. Ensure the wires are securely in place in the connector and the board.
3. Measure the resistance of the thermistor on the LVCB. Disconnect the TB18 connector and measure the resistance
through the blue wires. It should measure 3k-10K ohms. If out of range, replace Chamber Thermistor (Parts Manual:
Glossary).
Error 71: Scour Thermistor Shorted or Open
TRIGGER: A short or open of the scour is detected by the LVCB
1. Reset the blender by pressing “Regular” & “More Thick” buons together for 7 seconds to so-reset the blender.
2. Check the Scour Thermistor wires and connector. The thermistor is located by removing the le, right and rear panels.
The thermistor is located at boom of the smaller heater. The wires are red.
A. Ensure the wires are seated in the connector securely.
B. Check the wiring harness for damage or breaks in the wiring insulaon.
C. Check the wiring on the Low Voltage Control Board (LVCB). The connecon point on the LVCB is in the upper le
corner and labeled as TB18. Ensure the wires are securely in place in the connector and the board.
3. Measure the resistance of the thermistor at the control board. Disconnect the TB18 connector and measure the
resistance through the red wires. It should measure 3-10K ohms. If out of range, replace Scour Heater (Parts Manual:
Heaters & Posion Motor).
Error 74: Time-Out Occurred During Homing
TRIGGER: Any homing me-out parameter exceeded
1. Reset the blender by pressing “Regular” & “More Thick” buons together for 7 seconds to so-reset the blender.
2. Verify that the travel path of the Cup Holder is clear. Remove any obstacles.
3. Bring up the LVCBS Status Screen (Press the “Le Arrow” & “OK” buons for 7 seconds unl the Status Screen appears on
the screen) and locate Line Q: “HomeSn: 1/0”
A. If the Cup Holder is in its home posion and “HomeSn: 1”, proceed to Step 4.
B. If the Cup Holder is in its home posion and “HomeSn: 0”, replace Through-Beam Sensor (Parts Manual: Switches,
Sensor & Solenoid Lock) and proceed to Step 4.
4. Inspect the back of the Accumulator Tank to verify there is no leak coming out of the metal ng that could short out the
sensor. If there is a leak, replace Accumulator Tank (Parts Manual: Water System).
5. Check to see if the Cup Holder will re-home:
A. Turn the blender o, manually pull up on the Cup Holder 3-4 inches. Turn the blender back on. The Cup Holder
should re-home, or lower back down, aer the boot up process. If the Cup Holder doesn't return to the home
posion, replace Posion Motor (Heaters & Posion Motor).