0020213396_05 Operating instructions
13
▶
Inform your competent person so that
he can top up the heating water.
F.1120 immersion heater: Phase failure
The product has an internal circuit breaker
which switches off the heat pump in the
event of short circuits or the failure of one
(product with 230 V power supply) or sev-
eral (product with 400 V power supply)
current-carrying phases.
If the electric back-up heater is defective,
the Anti-legionella function is not guaran-
teed.
▶
Inform your competent person so that
they can eliminate the fault and reset
the internal circuit breaker.
7 Care and maintenance
7.1 Fulfilling requirements for the
installation site
The installation site must be dry and frost-
proof throughout.
Condition
: Outdoor air heat source
The air/brine collector is designed to be
operated with outdoor air. The air intake
and blow-off route of the outdoor unit must
be kept clear at all times in order to guar-
antee that the air can flow unhindered and
as intended. Vegetation and, in winter,
snowfall, must be cleared.
You are not permitted to make any sub-
sequent structural alterations which
may result in a reduced room volume
or a change to the temperature at the
installation site.
7.2 Caring for the product
▶
Clean the casing with a damp cloth and
a little solvent-free soap.
▶
Do not use sprays, scouring agents,
detergents, solvents or cleaning agents
that contain chlorine.
7.3 Reading maintenance
messages
If the
symbol is shown in the display,
the product requires maintenance work or
the product is in restricted mode (comfort
protection). The product is not in fault
mode; it continues to operate.
Regardless of maintenance messages
appearing on the display, it is advisable
to have a competent person carry out
an inspection every year and mainten-
ance every two years in order to keep the
product in good working order.
▶
Consult a competent person.
Condition
:
Lhm. 37
is displayed
The product is in Comfort protection mode.
The product has detected a permanent
fault and continues to run with restricted
comfort.
7.4 Checking the system pressure
1.
Check the filling pressure of the heat-
ing installation every day for a week
after initial start-up and maintenance
work, and then twice a year.
–
Min. heating circuit operating pres-
sure:
≥
0.07 MPa (
≥
0.70 bar)
2.
Inform your competent person so
that he can add heating water and in-
crease the filling pressure.
7.5 Checking the brine circuit's
filling pressure
1.
Check the brine circuit's filling pres-
sure at regular intervals. Read the
brine circuit's filling pressure in the
heat pump's display.
–
Brine fluid operating pressure
range: 0.07 to 0.20 MPa (0.70 to
2.00 bar)
2.
Inform your competent person so that
he can add brine and increase the
filling pressure.
