User manual

4.1.1 Sub-menu OPERAT.
Table 5. Used to select operating mode.
Menu
selection
Meaning Factory
setting
(OFF)
The installation is fully switched off. This mode is
also used to acknowledge certain alarms.
CANCEL = starting point, no changes made.
To select OFF as operating mode, press the minus
sign once to scroll down one step and press the
right arrow once.
-
AUTO
Automatic operation with both heat pump and
auxiliary heater permitted. If the number of power
stages for auxiliary heating are set to zero (SERVICE
-> AUX. HEATER -> MAX STEP) only AUTO or OFF
can be selected as operating mode.
-
HEAT PUMP
Operation with only heat pump permitted.
Note! No peak heating charging
(anti-legionella function) with only
heat pump operation.
-
AUX.
HEATER
Operation with only auxiliary heater permitted. -
HOT WATER
Operation with heat pump for hot water produc-
tion and auxiliary heater during peak heating
charging (anti-legionella function).
-
MANUAL
TEST
Only displayed when the value for MANUAL TEST
is set to 2 in
The SERVICE menu. Outputs that control compo-
nents are activated manually.
-
User manual VUGFA102 – 19