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Technical Manual - Page 3

ERC Failure Codes

-F0- Shorted Or Jammed Input Device

This failure will appear if a shorted or jammed input device is defective. Possible causes include

shorted wires or a defective membrane switch.

-F1- Alarm “System Watchdog Circuit”

The system will detect a failure in the internal watchdog element relay circuits and will activate a

cancel feature. F1 will be displayed in the time digits and will beep until the cancel button or another

function is selected. An F1 failure could be detected in cook or time of day mode. With an F1 failure

the ERC is picking up a command to supply heat without receiving an input from the membrane. The

watch dog circuit is designed to prevent this.

If the beep continues after pressing cancel check the main control (ERC)

-F2- Alarm Heating Mode High Temperature

Is activated when the ERC senses a runaway heat condition or when the temperature exceeds

“runaway limits”. The ERC will beep until the cancel or another function is selected. If the alarm

repeats the F2 alarm check the oven sensor and wiring after ﬁ rst checking for a stuck relay. If alarm

goes away verify the oven will complete a clean cycle without any type of failure.

-F3- Alarm Shorted Oven Sensor

Occurs when the ERC senses a short circuit in the oven temperature sensor for 16 temperature conver

sions in a row. F-3 will appear in the digits and a beeping will be heard. If the alarm does not go away

after pressing the cancel key check the sensor and wiring.

**Important Note:

This test will only be performed while a cooking operation is being attempted. The F3 alarm will not

be displayed in the time of day mode.

-F4- Alarm Open Oven Sensor

“F4” will be displayed along with a beeping if the ERC determines an open oven temperature sensor

circuit for 16 consecutive oven temperature conversions.

**Important note: This test will only be performed while a cooking operation is being attempted.

The F4 mesage will not be displayed in the time of day mode.

**Important note: If the oven sensor is open the bake modes cannot be activated. The controls

will be non-responsive. Look for this failure, as at ﬁ rst appearance you may suspect the ERC or

selector instead of an open sensor. A strange number may also appear in this failure mode.

Dacor ECPS User Manual

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