9.2
Fault repair
Fault descrip-
tion
Cause
Remedy
Personnel
No hot water at
the taps.
Ball valves are
closed.
Open the ball valves.
Operator
The primary energy
supply is not
ensured.
Check the buffer tank tem-
perature and primary flow
line temperature.
If there is no hot water,
check the function of the
external heat supply.
Operator
Heat exchanger
defective.
Replace the heat
exchanger (
49).
Heating and
sanitary
technician
Primary circulation
pump defective.
Replace the primary circu-
Heating and
sanitary
technician
Backflow preventer
defective.
Replace the backflow pre-
51).
Heating and
sanitary
technician
Controller defective
or power supply
disconnected.
Check the power supply
Electrician
The hot water
only emerges
from the taps
after a long
delay.
If integrated circu-
lation is installed,
then the integrated
circulation is
defective.
Replace the circulation
Heating and
sanitary
technician
Insufficient hot
water at peak
times.
Temperature
sensor or flow rate
sensor defective.
Replace the temperature
sensor or flow rate sensor
Heating and
sanitary
technician
For stations with
cascading: Zone
valve defective.
Replace the zone valve in
accordance with the manu-
facturer’s documentation
Heating and
sanitary
technician
Black water at
the taps.
Heat exchanger
defective.
Replace the heat
exchanger (
49).
Heating and
sanitary
technician
TACOTHERM FRESH PETA 2 / PETA 2 X
Faults
V02.2020 11/2020
Item no. 215747
EA no. 1329
Operating instructions
48