73
10.3 internal errors
To remove the following errors cut the power supply for >60 seconds. If the error message is still shown on the
display, contact customer service and provide a detailed description of the error.
internal errors
error-message on the display - red led on
ERROR 1
EEPROM-ERROR
Reset - after repeated error-message
(data block malfunction)
⇒
change control card
• Check push buttons,
Button error
• Display-board may be defective
ERROR 4
(e.g.: jammed key)
• Assure drive cover securely attached
to base with no interference (pinched
wires, debris, etc.)
ERROR 5
EPROM-error
Reset - after repeated error-message
(Checksum error)
⇒
change control card
ERROR 6
Program error:
Reset - after repeated error-message
Watchdog error
⇒
change control card
ERROR 7
Program error:
Reset - after repeated error-message
Processor pulse error
⇒
change control card
• Check installation of cables,
connection of the screen and
CODE ERROR
Code error:
balanced power supply.
invalid processor command
• Check earth/ground.
• Install additional inductances for
the signal-cables (e.g. ferrites).
examples:
Booster unit
problem: HYdroVar will not stop
cause:
check:
• Demand exceeds pump capacity
• Check pipes and valves
• Pre-charge pressure in pressure tank
• Set WINDOW [0310] (< 10%) and
• Incorrect setting of WINDOW and
HYSTERESIS [0315] (80-50%)
RAMP HYSTERESIS
• Set RAMP 2 [0220] to 4...13 sec.
• Shut down ramp too slow
• MINIMUM FREQUENCY [0250] should be
• Suction line too long
activated for pressure increase at 0 demand
Failure MessaGes
