How do I maintain a Blodgett unit?

Follow the Blodgett recommended maintenance schedule: daily cleaning of accessible surfaces, weekly inspection of seals and gaskets, monthly check of electrical connections and water filters, and annual professional service including calibration and safety checks.

Where can I find Blodgett parts and documentation?

Genuine Blodgett replacement parts and service documentation are available through authorised dealers. For instant answers about Blodgett troubleshooting and maintenance, use AskWhiz on WhatsApp.

What does ERR1 mean on a Blodgett convection or HydroVection oven?

ERR1 means the control commanded heat but the cavity temperature never rose within the expected window, so the controller locks out heat demand and sounds an alarm. This is a heating-circuit fault, not a probe fault — the control can read temperature, but the heat source is not responding. Start with the basics: confirm the breaker has not tripped and power cycle the oven. On gas models, check that the manual shutoff valve is open and gas pressure is in spec, then watch whether the igniter glows orange-hot when heat is called; a silicon carbide igniter should read 50–200 ohms cold. On electric models, lock out power and ohm each heating element for an open. Inspect control-board relays for pitting or arcing. Call an authorized Blodgett technician if ERR1 returns or traces to the gas valve or board.

What does ERR7 mean on a Blodgett convection or HydroVection oven?

ERR7 is a communication failure between the main control board and one or more peripheral boards on the oven's internal data bus. The controller cannot reliably exchange the signals it needs to manage the heating cycle, so it disables operation to prevent uncontrolled heating. This is the control electronics failing to talk to each other, not a heating-element fault. The oven may refuse to start, the panel buttons may go unresponsive, or the display may show garbled text before settling on ERR7, and the fault can come and go. First, kill power at the breaker for at least 30 seconds, then restore it — a transient disturbance can trigger a false ERR7. If it returns, lock out the oven, open the control enclosure, and reseat every ribbon cable and harness, cleaning corroded pins. Check for steam or grease ingress, which HydroVection models are prone to, and verify supply voltage is within nameplate tolerance. Persistent ERR7 needs a factory-authorized board diagnosis.

What does PROBE mean on a Blodgett convection or HydroVection oven?

PROBE — shown as PROBE, PROBE OPEN, or PROBE SHORT on some controllers — means the temperature sensor circuit has failed, so the controller cannot read a valid cavity temperature and disables heat to prevent overheating. PROBE OPEN means the circuit is broken; PROBE SHORT means the probe or its wiring has shorted. The display often reads an extreme value (–40 °F or 999 °F) or dashes. Power cycle first to rule out a transient fault. If it returns, lock out power, unplug the probe at the board, and inspect the connector and lead for corrosion or burnt insulation. Measure resistance across the probe leads at room temperature — a standard RTD typically reads 1,000–2,000 ohms at 70 °F; consult the Probe Ohms Chart for your model. Infinite confirms PROBE OPEN, near-zero confirms PROBE SHORT. Confirm the probe is fully seated in its bracket, and replace it with the correct Blodgett part if it is out of spec. If a good probe still throws PROBE, the board input has failed — call an authorized technician.

Quick Answer

Blodgett convection and HydroVection ovens lock out heat and sound an alarm on three faults: ERR1 is a heating-circuit fault (control commanded heat but cavity temperature never rose), ERR7 is a control-board communication failure on the internal data bus, and PROBE (also PROBE OPEN or PROBE SHORT) means the temperature sensor circuit has failed.

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By Octavian Ghindea

Co-founder & CTO · Reviewed June 2026

What error codes does Blodgett display?

ERR1

No heat / heating fault — verify breaker and gas supply, check the igniter or heating elements, inspect control-board relays

ERR7

Board-to-board communication failure — reseat ribbon cables and harnesses, check for moisture/grease ingress, verify supply voltage

PROBE

Probe failure (PROBE OPEN = open circuit, PROBE SHORT = short) — ohm the probe against the Blodgett chart and check seating and wiring

Common questions about Blodgett equipment

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