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10 Error Signals
The active Error messages are shown in the selected language, but the last 5 Error messages
stored in the Error memory (main menu) are displayed in English language only!
After the cause has been remedied, the error can be reset by cutting off the power supply
for >60 seconds, or pressing all three buttons (Ï,Ð and ¾) together for about 5 seconds.
All error signals are indicated at terminal X2/1-2-3 (failure relay).
If no Error is active, the relay switches on and terminals X2/2 and X2/3 are closed.
NOTICE: If “AUTO – START” is ON and automatic “ERROR-RESET” is enabled, the
HYDROVAR can start again automatically after a power failure.
Error-picture Probability cause Solution
No error-message on the display - No red LED
no AUTOSTART after
power failure
Parameter AUTOSTART is set
to “OFF”
Check Parameter AUTOSTART
Display shows INVERTER
LOCKED / ENABLE
INVERTER
external ON/OFF contact is
opened
check if switch or external contact is
closed or bridge X1/4 and X1/5
EXT ADC-I <4mA is
blinking on the display
Either 2
nd
Required Value or
OFFSET is active but no signal
(4-20mA) connected
check external analogue signal (on
terminals X1/10-12)
No operation even system
pressure < set pressure
Pressure higher than the start
value, regulation mode isn’t
set to NORMAL.
check parameter START VALUE
and/or REGULATION MODE
Error-message on the Display - red LED on
Lack of water Low water contact is open
• protection of incoming pressure or
min. level to less
• bridge X1/6-7, if there is no ext.
low water protection
• adjust Parameter DELAY TIME if
the failure happens only for short
time
Conveyer Limit adjustable value of
Parameter CONVEYER LIMIT
is not reached
• check booster unit, adjust
Parameter DELAY TIME
• Parameter ERROR RESET set to ON,
to enable 5 restarts
(e.g. in empty system)
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