Bertazzoni Ranges 77:150 Error: Meat probe circuit fault
What Does 77:150 Mean? The code 77:150 is a food probe circuit fault reported on Bertazzoni Professional Series dual-fuel ranges with TFT displays, particularly the PROF366DFSROT platform. It is closely related to 30:150 but is flagged at a different point in the control board’s diagnostic sequence, indicating a direct fault on the probe monitoring circuit […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. With 77:150 active the oven cannot maintain accurate temperature. Schedule service within a few days — continued use risks temperature overshoot and further probe circuit damage.
Can I reset the code?
Yes. A 2-minute circuit breaker power-cycle clears the fault flag temporarily, but 77:150 will return on the next cooking attempt unless the shorted probe receptacle is replaced.
When to stop immediately?
Stop if you notice: Oven temperature becomes visibly uncontrolled with 77:150 active, Fault appears on every cooking attempt after probe removal and reset.
Symptoms You May Notice
Oven fails to maintain set temperature and cuts off unexpectedly
The oven heats initially but cannot sustain the target temperature, cutting off mid-cycle as the probe circuit fault interferes with the control board's temperature regulation loop.
Display shows 77:150 intermittently even without a probe connected
The fault code appears during normal cooking attempts regardless of whether a meat probe is plugged in, indicating the receptacle itself is the source of the fault rather than the probe cord.
Fault is specific to PROF366DFSROT and similar dual-fuel models
The 77:150 code has been reported almost exclusively on the PROF366DFSROT and related TFT-display Professional Series dual-fuel ranges, pointing to a model-specific probe circuit implementation.
Possible Causes
Probe receptacle internally corroded or shorted
The oven-wall probe jack has deteriorated from heat and moisture exposure, presenting a continuously abnormal resistance to the control board's probe monitoring circuit.
Requires ProfessionalDamaged probe cord still seated in the receptacle
A cracked probe cable left plugged in shorts the monitoring terminals at the jack, producing the 77:150 fault consistently across cooking sessions.
DIY PossibleSafe Checks You Can Do
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1
Remove meat probe and power-cycle
Open the oven door and remove any probe currently plugged into the probe receptacle on the oven cavity wall. With the jack empty, switch the circuit breaker off for 2 full minutes, restore power, and attempt a bake cycle.
If 77:150 clears after removing the probe, replace the probe cord before further use.
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2
Confirm whether fault persists with empty jack
If the code returns during the test bake cycle with no probe installed, note the oven model number from the label inside the door frame and contact Bertazzoni service — the receptacle requires replacement.
Provide the full model number (e.g. PROF366DFSROT) when calling service, as parts are specific to the TFT-display platform.
When to Call a Professional
Contact a qualified technician if:
- 77:150 returns immediately after a power-cycle with the probe jack empty
- Fault co-occurs with other probe-circuit codes such as 30:150
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