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Switchgear of diesel pump
66
WILO SE 2020-12
CODE
DESCRIPTION
CAUSE
A38
Battery voltage B high
Battery voltage higher than the threshold set with P05.02
for a time longer than P05.04.
A39
Battery voltage B low
Battery voltage lower than the threshold set with P05.03
for a time longer than P05.04.
A40
Inefficient B battery
Maximum number of attempts to start from battery B ex-
hausted. Battery voltage lowered below the minimum
supply threshold.
A41
Battery charger alarm B
Alarm generated by the input programmed with the
function - Battery Charger Alarm B - connected to an ex-
ternal battery charger when the mains voltage is within
the limits.
A42
Battery charger alternator failure
Occurs when the motor is running ('W/pick- UP') but the
battery charger alternator signal (D+) remains below the
motor voltage threshold P12.01 started for more than
4 seconds.
A43
Auxiliary voltage too low
Auxiliary voltage lower than the threshold set with
P02.07 for longer than P02.09.
A44
Auxiliary voltage too high
Auxiliary voltage higher than the threshold set with
P02.08 for longer than P02.09.
A45
System error
An internal error has occurred. Contact customer service
A46
Ambient temperature too low (analogue)
Ambient temperature below the alarm threshold set with
P04.02 for longer than P04.03.
A47
Ambient temperature too high (analogue)
Ambient temperature above the alarm threshold set with
P04.04 for longer than P04.05.
A48
Water reserve (digital)
Alarm generated by the input programmed with the
function - Water reserve
A49
Low water reserve level (analogue)
The water level in the reservoir tank is below the
threshold set with P02.16.
A50
Empty water reserve (analogue)
The water level in the water storage tank is below the
threshold set with P02.17.
A51
Low level priming tank
Alarm generated by the input programmed with the
function - Priming tank level
A52
Output power supply disconnected
Alarm generated by power failure on terminal 25.
A54
System not in automatic mode (for 24 hours)
System not in automatic mode for more than 24 hours.
A55
Motor pump in operation
Alarm generated by the input programmed with the
function - Start pressure switch
A56
Pump failure
Alarm generated by the input programmed with the
function - Pump pressure switch started - not active and
motor running for the time set in parameter P02.21.
A57
Pressure pump (with motor off)
Alarm generated by the input programmed with the
function - Pump pressure switch started - active and
motor not running for the time set in parameter P02.21.
A58
Maintenance request 1
Alarm generated when the maintenance hours of the rel-
evant interval reach zero. See menu M14. Use the com-
mand menu to reset the operating hours and reset the
alarm to zero.
A59
Maintenance request 2
A60
Maintenance request 3
A69
Partially open suction valve
Alarm generated by the input programmed with the "Par-
tially open suction valve" function. In this situation the
suction valve is able to deliver the maximum flow rate re-
quired by the pump
A70
Delivery valve partially open
Alarm generated by the input programmed with the "De-
livery valve partially open" function. In this situation the
pressure-side valve is not able to deliver the maximum
flow rate required for the sprinkler system
A71
Local sprinkler pumps
Alarm generated by the programmed inlet with the pump
room sprinkler function.
