Troubleshooting guide

JDF Silver Series Training Manual

Troubleshooting and Repair

The JDF 2S and 4S dispensers have built in function LED indicators on the main CBA. The indicators, located at the

bottomoftheCBA,indicateafunctionwhenlightedorcouldmeanafaultstatusbyaashingsequence.

The circuit board LED indicator chart found in the JDF 2S and JDF 4S Installation & Operating Guide should be ref-

erenced when diagnosing a fault.

LED Indicator Chart

LED Number LED Color Illuminates

1 Bath Red When bath temperature is above 34º F.

Flashes slowly when compressor is in a 6 minute delay period.

Openbaththermistorcircuitwillash#2and#3LED’s1timeevery3

seconds. The compressor will not run under this condition.

Shortedbaththermistorcircuitwillash#2and#3LED’s2times

every 3 seconds. The compressor will not run under this condition.

2 Bath Green When bath temperature is below 34º F.

3 Green When the compressor should be On.

4 Cabinet Red When the cabinet temperature is above 50º F.

Flashes slowly when cabinet temperature exceeds 50º F for 4 hours.

Dispense functions are locked out under this condition. Power down

the dispenser to reset.

Flashes rapidly if dispense is attempted in lockout condition.

Opencabinetthermistorcircuitwillash#4and#5LED’s1timeevery

3 seconds.

Shorted cabinet thermistor will turn #4 and #5 LED’s on steady.

5 Cabinet Green When cabinet temperature is below 50º F.

Accessing the LED’s

To access the LED indicators:

Step 1: Remove the drip tray.

Step 2: Remove the two standard screws securing the lower splash panel. Slide the splash panel down and outward

away from the dispenser.

Step 3: Locate the LED’s at the bottom of the CBA.

JDF 2SJDF 4S