Bertazzoni Ovens 77:150 Error: Meat probe direct fault
What Does 77:150 Mean? The code 77:150 is a food probe circuit direct fault on Bertazzoni Professional Series dual-fuel wall ovens with TFT displays — most commonly the PROF366DFSXT platform. It signals that the probe monitoring circuit on the control board is detecting an abnormal condition at the probe receptacle. Unlike 30:150 which appears at […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. The oven cannot maintain accurate temperature control while 77:150 is active. Schedule service within a few days — a shorted probe receptacle causes the fault on every use until replaced.
Can I reset the code?
Yes. A 2-minute circuit breaker power-cycle clears the fault flag temporarily. 77:150 will return on the next cooking attempt unless the damaged probe cord is removed or the receptacle is replaced.
When to stop immediately?
Stop if you notice: Oven temperature becomes uncontrolled with 77:150 active, Fault returns on every cooking attempt after probe removal and reset.
Symptoms You May Notice
Oven fails to hold temperature and cuts off unexpectedly during bake cycles
The oven may heat initially but cannot sustain the set temperature, cutting off mid-cycle as the shorted probe receptacle interferes with the control board's temperature regulation signal.
Code appears intermittently even when no food probe is plugged in
The fault persists across cooking sessions without a probe connected because the receptacle itself is internally shorted, continuously presenting an abnormal signal to the probe monitoring circuit.
Fault is specific to PROF366DFSXT and related dual-fuel Professional Series models
The 77:150 code has been reported almost exclusively on the PROF366DFSXT and related TFT-display Professional Series dual-fuel wall ovens, pointing to a shared probe circuit implementation on this platform.
Possible Causes
Probe receptacle internally corroded or shorted from heat and moisture
The oven-wall probe jack contacts have corroded from repeated steam and heat exposure, creating a persistent low-resistance path that the control board interprets as a continuous direct fault.
Requires ProfessionalDamaged probe cord still plugged into the receptacle
A cracked or broken probe cable seated in the jack continuously shorts the probe monitoring terminals, triggering 77:150 during every cooking attempt.
DIY PossibleSafe Checks You Can Do
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1
Remove any meat probe from the receptacle
Open the oven door and unplug any food probe currently inserted in the probe receptacle on the oven cavity wall. With the jack empty, switch the circuit breaker off for 2 full minutes, restore power, and run a bake cycle to confirm whether the fault clears.
If 77:150 clears after removing the probe cord, the cord is damaged — replace it before the next use and do not re-insert the old cord.
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2
Test with probe jack empty and note model number
If the fault returns during the test bake cycle with no probe inserted, record the full model number from the door frame label and contact Bertazzoni service. The receptacle itself requires replacement — parts are model-specific to the TFT-display platform.
The model number for affected units typically follows the pattern PROF366DFS__ — provide this to the service technician so the correct probe receptacle part is sourced.
When to Call a Professional
Contact a qualified technician if:
- 77:150 returns immediately after a power-cycle with the probe jack empty
- Visible corrosion or burn damage inside the probe receptacle
- Fault co-occurs with other probe-circuit codes simultaneously
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