Bimby TM31 Error 39: Diagnosis and Solution for Heating Problem

⚠️ SAFETY WARNING: Always disconnect the power plug from the electrical socket before performing any mechanical or electrical checks.

Error 39 Diagnosis: Heating Problem

Error 39 on the Bimby TM31 display indicates no current draw from the 1000W heating circuit when starting the temperature setting.

Cause analysis and probability:

• 70% Broken bowl heating element: Measure continuity on the pins under the bowl using a Professional digital multimeter for Bimby: the correct value is 50–58 Ω. If the circuit reads open (OL), you need to purchase a Complete Vorwerk Bimby TM31 bowl. This often happens when liquid penetrates through the gasket or due to thermal shock.
• 25% Power board solder joint or relay: Interruption on the Vorwerk Bimby TM31 power supply board due to "cold solder joints" on the switching circuit pins. It is often resolved by replacing the Vorwerk Bimby TM31 power board relay.
• 5% Contacts or NTC sensor: Oxidation on the spring pins in the motor base or anomaly in the Vorwerk Bimby TM31 NTC temperature sensor. Apply an Electrical contact cleaner spray for Vorwerk Bimby TM31 to the connectors.

Operational decision: If the bowl resistance reads a value other than 50–58 Ω, replace the bowl; otherwise check the relay solder joints on the power board.