47
When power on the unit, "1%~99%" is displayed on the user interface during initialization. During this process the user interface
cannot be operated.
Powering on the unit
Failure diagnosis at first installation
If nothing is displayed on the user interface, it is necessary to check for any of the following abnormalities before diagnosing
possible error codes.
-Disconnection or wiring error (between power supply and unit and between unit and user interface).
-The fuse on the PCB may be broken.
If the user interface shows "E8" or "E0" as an error code, there is a possibility that there is air in the system, or the water
level in the system is less than the required minimum.
If the error code E2 is displayed on the user interface, check the wiring between the user interface and unit.
More error code and failure causes can be found in 12.4 "Error codes".
The unit should be configured to match the installation environment (outdoor climate, installed options, etc.) and user demand.
A number of field settings are available. These settings are accessible and programmable through “FOR SERVICEMAN” in user
interface.
9.6 Field settings
CAUTION
If the valves are at the incorrect position, the circulation pump will be damaged.
DANGER
If it's necessary to check the running status of the pump when unit power on, please do not touch the internal electronic
control box components to avoid electric shock.
Procedure
To change one or more field settings, proceed as follows.
Temperature values displayed on the wired controller (user interface) are in °C.
Keys
Function
MENU
• Go to the menu structure(on the home page)
BACK
• Come back to the up level
◄►
▼▲ • Navigate the cursor on the display
• Navigate in the menu structure
• Adjust settings
ON/OFF
• Turn on/off the space heating/cooling operation or DHW
mode
• Turn on/or off functions in the menu structure
UNLOCK
• Long press for unlock /lock the controller
• Unlock /lock some functions such as "DHW temperature
adjusting"
OK
• Go to the next step when programming a schedule in the
menu structure; and confirm a selection to enter in the
submenu of the menu structure.
NOTE
