Malfunction Alarms - B&C Technologies FM7 Computer Programming And Operating Instructions

Malfunction Alarms

The state of the water temperature and water
levels are constantly monitored to prevent
functioning problems with these devices.
Watch Dog Timers (WDT) are used to prevent
cycle failure when temperatures, fills, drains,
and levels don't meet programmed values. In
the event of a program fault, the buzzer sounds
and the display changes to show the fault:
LEVEL ALARM
Indicates a problem with the level sensing
system. This could be a loose or cracked water
level tube, the level sensor, or the level sensing
circuit. As long as the system detects a problem
with the level sensing system, the machine will
be inoperable. The buzzer can be disabled with
the RESET key.
TEMP ALARM!
Indicates a problem with the temperature
sensing circuitry, temperature probe, or wiring.
The machine continues to function, although
auxiliary heating (if equipped) is not possible.
The Temperature fault indicator on the control
panel will be illuminated.
TEMP WDT!
Indicates the programmed temperature was not
reached within the allotted time. The most
common cause is a malfunctioning auxiliary
heating system. A short WDT time and very
cold water can also cause this problem.
Pressing the START key will cancel the alarm.
FILL WDT!
Indicates the programmed level was not
reached within the allotted time. The most
common causes:
During Fill
Faulty water inlet valve
>
Low or no water pressure
>
Execution
Wash Program Execution
>
>
Pressing START will continue the program,
while RESET will cancel the program.
During Drain
>
>
>
Press RESET to end the program.
Indicates a fault in the drive system. On
inverter driven equipment, indicates a drive
fault. Press RESET to clear the fault. If this
fault recurs during the next wash program,
contact a qualified service technician.
Indicates the door is not closed properly. This
fault disables the machine until cleared, and
aborts a program if active. Press RESET to
clear the fault.
Indicates a water level of greater than 2cm a
the onset of spin. The machine will resume the
spin when the level falls below the threshold.
Press RESET to abort the cycle.
Indicates water level in the cylinder at the end
of a program. If no water is present, ensure
that the water level pickup tube is clean and
free of debris, and that no debris is built up
around the opening in the sump where the tube
is connected. After cleaning, open the door,
power the machine down for 5 minutes, restore
power, and wait 5 minutes (with the door
open). Then simultaneously press START and
STOP . This will reset any offset that has
developed due to level tube restriction.
24
Faulty drain valve
Problem with water level tube
Drain valve blocked
Drain hose blocked
Faulty Drain Valve
VFD FAULT!
DOOR ALARM!
DRAIN
LEVEL cm=xx