Lock Level; Service Menu (Only Cex / Cex-U) - clage CFX-U Gebrauchs- Und Montageanleitung

CEX-U / CEX / CFX-U / CFX
7. Initial operation

Lock level

The operating mode of the appliance can be restricted. The service menu can
be used to configure the appliance.
EN
Activation of the lock level
1. Set parameters
a. CEX/CEX-U: Set required lock level in the service menu (refer to chap-
ter "Service menu" in this installing instructions).
b. Select required parameters via the setting menu (see supplied FX Next
manual chapter"Settings", subpoints "Temperature limit" and / or "Load
shedding").

7. Service menu (only CEX / CEX-U)

The service menu offers an overview of system parameters and is used for
diagnostics.
Press key and key
service menu, the display confirms by "FL" and by a flashing point. Using the
keys and , you can switch between the individual menu items.
Press key to see the value of the currently selected menu. The value flash-
es in the display. (The values of some menus can be switched over by using
the keys and ). You will get back to the drop-down-menu when pressing
key again. With key
value). After two minutes without any key stroke the system automatically
switches back to the standard display (fig. G1).
Individual menu items as follows:
"FL": Flow
Indication of current flow rate given in l/min.
"Po": Power
Indication of current power consumption (kW).
"t1": Temp in
Indication of inlet temperature (°C).
"t2": Temp out
Indication of outlet temperature (°C).
"CA": Control value
Indication of calibration value of the control system. Regular range: 40 – 60.
"PL": Power limit
Indication of the current maximum power rating (kW) of the appliance.
"Er": Diagnostics
Indication of the last ten diagnostic messages.
The error code is indicated by the first displayed value after pressing key
(refer to "Abstract for Trouble-Shooting & Diagnostics" in the hood). By using
the keys and the last 10 error codes are displayed chronologically.
Thereby the display indicates in turns the error numbers from "0" to "9" and
the corresponding error. The last error will be recorded at position "0" and
the former ones each shifted 1 position backwards.
simultaneously for at least 2 seconds to call up the
you will get back to the standard display (nominal
2. Disconnect the appliance from the power supply (e.g. by switching off the
fuses).
3. Move the jumper on the power electronics from pin 2 to pin 1 (see fig. F5).
4. Put the appliance into operation again.
Deactivation of the lock level
1. Disconnect the appliance from the power supply (e.g. by switching off the
fuses).
2. Move jumper from pin 1 to pin 2.
3. Put the appliance into operation again
"LL": Lock level
The operating mode of the appliance can be restricted.
Setting Options:
"0" no restriction (factory setting)
"1" factory reset via key (countdown) not possible, parameters can be seen, but not
be modified in setup menu
"2" same as "1", additionally the setup menu cannot be opened
"3" same as "2" additionally nominal value memory 1 and 2 not changeable
"4" same as "3", additionally nominal value not changeable
Note: When the setting 1, 2, 3 or 4 was chosen, the system parameters can no
longer be modified in the service menu.
In order to modify these system parameters, it is necessary to remove the
jumper on the power electronics, as specified in the chapter "Deactivation of
the lock level".
"nr": Software version
Information about installed software version.
"rS": Received strength
(with wireless module only)
Information about the current signal quality of the remote control as percent-
age. Depending on the distance between remote control and water heater
the value varies between 10 % and 100 %.
"tL": Temperature limit
The maximum setable temperature can be reduced to any value within the
temperature limit.
The Lock Level must be activated by placing the jumper to enable the limita-
tion.
"IIC": Signal
Information about the quality of the radio contact when a diagnostic display
is connected.
19