Blodgett Convection Oven Error Code FANC ERR: Fan Control Contact

What does Blodgett FANC ERR mean?

The fan in a Mark V convection oven is switched through a contact in its control circuit, and the IQ2T control checks that this contact behaves the way it was commanded. FANC ERR is posted when that check fails: the control reports a contact failure in the fan control circuit, shows the code in the top display and sounds its usual audible alarm. This is a different reading from FAN ERR. FAN ERR says the fan itself did not respond during a call for heat, while FANC ERR points at the switching contact that feeds it. The manual uses the same clearing sequence for both: one press of TOGGLE/CLEAR clears the alarm, a second press clears the message, and if the condition persists the oven should be turned off and a technician called. It does not name the contact or say which side of the circuit has the problem, so the manual alone does not tell you whether the contact is welded, open or simply reading wrongly. That decision takes a meter on the circuit, not another restart.

Affected models and control systems

This page covers the Blodgett Mark V convection oven with the IQ2T control, based on the Mark V Installation, Operation, Maintenance manual. Other control generations list fan problems differently, so confirm the exact display text before applying it.

Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.

What you may notice

• FANC ERR in the top display with an audible alarm
• The fan may run at the wrong time, or not run at all
• Uneven baking or slower cooking
• The code returns after being cleared

Possible causes

Likely causes — what usually sits behind FANC ERR on this control. A technician confirms which one it is before any part is replaced.

• The fan contactor or relay contacts are worn, pitted or stuck, so the control reads the wrong state
• A loose connection in the fan control circuit is making the contact feedback intermittent
• The control output that drives the fan contact has weakened

Safe checks before calling for service

How a technician diagnoses FANC ERR

1. Read the code and note whether FANC ERR appears at start-up or during a heat call.
2. Check the fan relay or contactor coil voltage and the contact state with a meter.
3. Look for a stuck, welded or burned contact and for loose terminals on the circuit.
4. Check the control output that energizes the fan contact.
5. Replace the contactor or control part that fails, then run a full heat cycle to confirm.

How FANC ERR differs from similar codes

FANC ERR concerns the contact in the fan control circuit, not the motor; a bad contact and a failed fan motor can look alike from the front panel.

Technical reference

Maker documentation

Blodgett owner support

Edition

PN 17561 Rev N (3/06)

Models / control

Blodgett IQ2T control

Section

Operation, Blodgett IQ2T Control, "Error Codes and Alarms" (manual page 23)

Checked

October 2026

We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.