Switching The Product To Standby Mode; Troubleshooting; Detecting And Rectifying Faults; Calling Up (Live Monitor) Status Codes - Vaillant ecoFIT sustain 835 Operating Instructions Manual

5 Troubleshooting

4.14 Switching the product to
standby mode
▶
Press the fault clearance key for less
than three seconds.
◁
The display shows OFF and goes
out.
◁
The product is now in standby mode.
◁
The product's frost protection func-
tion is activated.
◁
The main power supply is not inter-
rupted. The product continues to be
supplied with power.
5 Troubleshooting

5.1 Detecting and rectifying faults

▶
If faults occur, proceed in accordance
with the table in the appendix.
Troubleshooting (→ Page 16)
▶
If the fault cannot be eliminated using
the specified measures or if fault mes-
sages (F.xx) occur, contact a compet-
ent person.
5.2 Calling up (Live monitor)
status codes
▶
Press and at the same time.
Status codes – Overview (→ Page 16)
◁
The current operating status (status
code) is shown on the display.

6 Care and maintenance

6.1 Maintenance

An annual inspection of the product carried
out by a competent person is a prerequis-
ite for ensuring that the product is perman-
ently ready and safe for operation, reliable,
and has a long working life.
14

6.2 Caring for the product

Caution.
Risk of material damage
caused by unsuitable clean-
ing agents.
▶
Do not use sprays, scouring
agents, detergents, solvents
or cleaning agents that con-
tain chlorine.
▶
Clean the casing with a damp cloth and
a little solvent-free soap.
6.3 Reading maintenance
messages
If the symbol is shown in the display, the
product requires maintenance work.
The product is not in fault mode but contin-
ues to operate.
▶
Consult a competent person about this.
▶
If the water pressure is flashing at the
same time, simply add more heating
water.
6.4 Checking the condensate
drain pipework and tundish
The condensate drain pipework and tun-
dish must always be penetrable.
▶
Regularly check the condensate drain
pipework and tundish for faults and,
particularly, for blockages.
You must not be able to see or feel any
obstructions in the condensate drain pipe-
work and tundish.
▶
If you notice a fault, have it rectified by
a competent person.
Operating instructions ecoFIT sustain 0020230530_01