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Heat pump start-up
The following messages will be displayed for few seconds after switching on power supply of the machine. Please, do not touch
keyboard then.
Main screen of the controller will appear then. It contains the following:
Start with studying basic pushbuttons to freely move though the controller.
Approval key. Press it to approve settings or enter
required controller level.
Arrow up. You will move to higher items in the list,
or return to the main screen from the screen
showing internal diagram of heat pump.
Return key. Press it to return to previous controller
level without saving setting changes.
Arrow down. You will move to higher items in the
list, or go from the main screen to the screen
showing internal diagram of heat pump.
Press arrow down to move to internal diagram of heat pump. Press arrow up or wait few seconds to return to the main screen.
Press this button to enter individual settings menu. A list of settings or information to browse or change will appear.
Press arrow down to see the whole list. Press arrow up to return to previous items.
The unit on/off pushbutton. Confirmation screen will appear after pressing this button (below, on the left side. Press
OK to switch off the controller.
Device operated from heat pump controller
(marked with letter)
Operation or alarm status message
Pulsating items indicate devices
currently at work
Indications of temperature sensors
Date and hour
Digits indicate position of
temperature sensors
to be operated by the controller
Number of selected boiler-room diagram
High pressure pick-up
Condenser (heat exchanger)
Expansion valve
Evaporator (heat exchanger)
Low pressure pick-up
Compressor
Circulating pump - WILO ZRS 15 / 6
