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Procedure
About DHW mode
DHW：domestic hot water
To change one or more field settings, proceed as follows.
Temperature values displayed on the digital controller (user
interface) are in °C
Pump LED diagnosis and solutions
Failure diagnosis at the moment of first installation
10.7 Field settings
The unit shall be configured by the installer 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.
■ 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 have blown.
■ If the user interface shows " "or" " 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 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 13.4 Error codes.
About FOR SERVICEMAN
“FOR SERVICEMAN” is designed for the installer to set the
parameter.
1. Setting the composition of equipment.
2. Setting the parameter.
How to go to FOR SERVICEMAN
Go to MENU> FOR SERVICEMAN. Press OK
DHW control
DHW MODE SETTING typically consists of the following:
1. DHW MODE: enable or disable the DHW mode
2. TANK HEATER: set whether the booster heater is available or not
3. DISINFECT set the parameters for disinfection
4. DHW PRIORITY set the priority between domestic hot water
heating and space operation
5 DHW PUMP: set the parameters for DHW pump operation. The
functions above apply only to installations with a domestic hot
water tank.
How to set the DHW mode
To determine whether the DHW mode is effective.
Go to MENU> FOR SERVICEMAN> DHW MODE SETTING. Press
OK. The following page is displayed:
The password is 666. Use ◄ ► to navigate and use ▼ ▲ to adjust
the numerical value. Press OK. The following page is displayed:
Use ▼ ▲ to scroll and use “ok” to enter submenu for setting the
parameters.
FOR SERVICEMAN
Please input the password:
0 0 0
FOR SERVICEMAN
FOR SERVICEMAN
The pump has an LED operating status display. This makes it easy for
the technician to search for the cause of a fault in the heating system.
1. If the LED display lights up continuously green, it means the pump
is running normally.
2. If the LED display is flashing green, it means the pump is running
the venting function. The pump runs during the 10 minute venting
function. After its cycle, the installer needs to adjust the targeted
performance.
3. If the LED is flashing green/red, it means that the pump has
stopped operating due to an external reason. The pump will restart by
itself after the abnormal situation disappears. The probable reason
causing the problem is pump undervoltage or overvoltage (U<160V or
U>280V), and you should check the voltage supply. Another reason is
module overheating, and you should check the water and ambient
temperatures.
4. If the LED is flashing red, it means the pump has stopped
operating, and a serious fault has happened (e.g. pump blocked). The
pump cannot restart itself due to a permanent failure and the pump
should be changed.
5. If the LED does not light up, it means no power supply to the pump,
possibly the pump is not connected to power supply. Check the cable
connection. If the pump is still running, it means the LED is damaged.
Or the electronics are damaged and the pump should be changed.
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