Appendix; A Troubleshooting - Vaillant ecoCRAFT exclusive Operating Instructions Manual

Appendix

Appendix

A Troubleshooting

Problem
No hot water,
heating stays cold;
product does not
start
Hot water handling
mode without any
problems; heating
does not start
No hot water, heat-
ing mode function-
ing correctly
Traces of water
under or next to the
product
20
Possible cause
Building gas isolator cock closed
Building power supply switched off
Main switch on the product is
switched off
The heating flow temperature on the
control is set too low or in the "Heat-
ing off" position and/or the domestic
hot water temperature is set too low
Filling pressure of the heating install-
ation insufficient
Air in the heating installation
Ignition malfunction
No heat requirement via the control-
ler
The heating flow temperature on
the control is set too low or is in the
"Heating off" position
Air in the heating installation
The hot water temperature on the
control is set too low or in the "Hot
water off" position
Condensate drain pipework blocked
Leak in the system or the product
Operating instructions ecoCRAFT exclusive 0020149575_01
Solution
Open building gas isolator cock
Switch on building power supply
Switch on the main switch on the
product
Set the heating flow temperature
to the desired temperature and/or
set the hot water temperature to
the desired temperature
Add more water to the heating
installation
Purging the radiators
If the problem occurs again: In-
form the competent person
Press the reset button
If the problem occurs again: In-
form the competent person
Check the timer programme on
the controller and correct if neces-
sary
Check the room temperature and,
if required, correct the target room
temperature ("Controller operating
instructions")
Set the heating flow temperature
to the required temperature
Purging the radiators
If the problem occurs again: In-
form the competent person
Set the hot water temperature to
the required temperature
Check and, if required, clean the
condensate drain pipework
Close the cold water supply to
the product, inform a competent
person