DE DIETRICH ALEZIO AWHP MIV-II - Manual (Page 26)

6.2 Incidents and solutions
Problem Probable causes Solution
The radiators are cold.
The heating temperature
setting is too low.
4 Increase the value of parameter d or, if a room thermostat
is connected, increase the temperature.
¼See chapter: "Modifying the set room
temperature dH", page 17.
The heating mode is
deactivated.
4
Activate the heating mode.
¼See chapter: "Changing the operating mode",
page 18.
The radiator valves are closed. 4 Open the valves on all radiators connected to the heating
system.
The heat pump is not operating.
4
Check that the heat pump is switched on.
4
Check the fuses and switches.
The water pressure is too low
(< 1 bar).
4
Top up the installation with water.
¼See chapter: "Top up the installation with water",
page 22.
There is no domestic hot
water.
The DHW temperature setting
is too low.
4
Increase the value of parameter r.
¼See chapter: "Modifying the domestic hot water
temperatureHr", page 17.
The domestic hot water mode
is deactivated.
4 Activate the DHW mode.
¼See chapter: "Changing the operating mode",
page 18.
The energy-saving shower
head is restricting the water
flow.
4
Clean the shower head; replace if necessary.
The heat pump is not operating.
4
Check that the heat pump is switched on.
4
Check the fuses and switches.
The water pressure is too low
(< 1 bar).
4
Top up the installation with water.
¼See chapter: "Top up the installation with water",
page 22.
Significant variations in
domestic hot water
temperature
Insufficient water supply
4
Check the water pressure in the installation.
4
Open the valve.
The heat pump is not
working.
The heating temperature
setting is too low.
4
Increase the value of parameter d or, if a room thermostat
is connected, increase the temperature.
¼See chapter: "Modifying the set room
temperature dH", page 17
The heat pump is not operating.
4 Check that the heat pump is switched on.
4 Check the fuses and switches.
The water pressure is too low
(< 1 bar).
4 Top up the installation with water.
¼See chapter: "Top up the installation with water",
page 22.
An error code appears on the
display.
4 Correct the error if possible.
¼See chapter: "Error messages", page 24.
The water pressure is too
low (< 1 bar).
Not enough water in the
installation.
4 Top up the installation with water.
¼See chapter: "Top up the installation with water",
page 22.
Water leak. Contact the fitter.
6. Troubleshooting AWHP MIV-II
25 23/04/2013 - 300023321-001-03