FBD 772 - Refrigeration and System Faults; Transducer and Sensor Errors; Active Charge System Faults

77X INSTALLATION & OPERATION MANUAL
771/772/773/774 MODELS
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Error #190: HPSI Transducer
The high side refrigeration pressure is not reading correctly.
Error #200: Return Temperature Sensor
The refrigeration return (suction) temperature sensor is not reading correctly.
Error #240: Active Charge Cannot Vent
If the DCC module has attempted to vent five times unsuccessfully, the active charge pressure will not decrease to target
pressure range.
Error #250: Active Charge Cannot Fill
The DCC module has attempted to fill five times unsuccessfully, the active charge pressure will not decrease to target
pressure range.
1 Ensure the temperature sensor is plugged in.
2 Replace the sensor if faulty.
1 Verify the vent solenoid is electrically opening and closing using the MANUAL ON/OFF menu.
2 Verify the ll and vent solenoid inputs are not swapped.
3
Verify that gas is not bypassing the ll solenoid in the DCC module. Disconnect both solenoid
harness connections and verify the active charge pressure on the READOUTS menu is not climbing.
If the pressure reaches the incoming gas pressure then the ll solenoid is leaking.
4
Ensure that syrup has not entered the active charge system due to a failed expansion tank.
This may cause the orice in the DCC module to be clogged.
1 Verify the fill solenoid is electrically opening/closing using the MANUAL ON/OFF menu.
2 Verify the ll and vent solenoid inputs are not swapped.
3
Verify “Active Charge” input on the harness is plugged into the pressure transducer on the DCC
module.
4
Verify no gas is leaking out of the active charge system. Check any new tubing/Oetikers that were
installed for leaks. Disconnect both solenoid harness connections and verify the active charge
pressure on the READOUTS menu is not slowly decreasing to 0 PSIG (0 kPag).
5 Verify that syrup or debris has not entered the incoming gas line. Check screen in ll orice.
6
Dispenser does not have a DCC. Change the ACTIVE CHARGE setting to DISABLED in the SETTINGS
menu.
1 Ensure the pressure transducer is plugged in.
2 Replace the transducer if faulty.