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7 | FAULTS
Fault/indication
00:00
(time flashes)
E 36
E 38
AA1
AA2
No display
Temporary
display of
additional
display symbols
Pump does not
start
Pump makes
noises
Notice:
If you cannot rectify the fault, contact a specialist technician.
Cause
Time not set
Power failure for longer than 12 hours
Module defective, electronics fault
Temperature sensor defective
Temperature control setting non DVGW-
compliant
Switch-off time setting non DVGW-
compliant
Power supply interrupted
Frequency overlays may occur when
operating in an industrial environment or
in the proximity of radio transmitters.
Power supply cable break, short-circuit
or defective fuses
The time switching function has
switched off automatically
Motor is blocked, e.g. by deposits from
the water mains
Motor scraping, e.g. caused by deposits
from the water mains
Running dry, too little water
Air in the pump
SECONDARY HOT WATER CIRCULATION PUMP EV-ZUP-T 15 PLUS
Remedy
Set the time
Secure power supply, set the time
Have the motor head/ pump replaced by
an installer.
Set the temperature above 55 °C
Set the switch-off time to less than 8 hours
Check mains connection
The pump function is not impaired by this
fault
Have the power supply checked by a
qualified electrician
Check the time switching function setting
Have the motor head removed by an
installer. Ensure that the impeller can
move freely again by turning it and rinsing
out the dirt that has accumulated
Check the shut-off valves, they must be
fully open
Switch the pump on/off 5 times for 30 s
in each case
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