Child Lock; Factory Settings; Error Messages - OJ Electronics ETN4-1999 Bedienungsanleitung

ETN4-1999
Furthest to the left is 100 % duration of PWM,
while the vertical lines indicate successive
20 % drops in the time heating is provided
relative to 100 %.
The black area indicates the percentage cut-
out time determined by the setpoint.
Together with the light grey area, the dark grey
area indicates the relative amount of operating
time when nSb has not been activated, but the
dark grey area cuts out when nSb is activated.
The light grey area is the relative amount of
operating time when nSb has been activated
by the above-mentioned values.
The default value of setback degree "night
setback" (nSb) is 30 %.
nSb is inactive as default.
Frost protection "dEF" has the specified acti-
vation degree and is unaffected by the setback
degree in nSb.
Scale
Choose between degrees Celsius and a numerical scale. If the
numerical scale is selected, temperature is set on a scale from 0.0
to 10.0 where 0.0 corresponds to min. temperature (SCA Lo) and
10.0 corresponds to max. temperature (SCA  Hi).
Temperature reading
Defines which temperature is to be shown on the start display: the
setpoint (SP) or the actual, measured temperature.
Offset
If the actual temperature (measured using a thermometer) differs
from that displayed by the thermostat, the thermostat can be
adjusted to offset the difference.
Control method
PWM or ON/OFF control can be selected. PWM is an advanced
control method which calculates the most effective and economi-
cal way to heat homes and other buildings. ON/OFF control is
traditional differential control (e.g. 0.3 °C) for other tasks.
PWM cycle time
Allows cycle time to be set when using PWM control. At least 20
min is recommended.
Differential temperature
Allows temperature differential to be set when using ON/OFF con-
trol. The higher the differential temperature, the lower the number
of relay operations.
Relay function
When used for heating purposes, the relay should be in normally
open position (NO). If the thermostat is used for cooling purposes,
the relay should be turned to normally closed (NC).
Software version
Displays thermostat software version.
3
OJ Electronics A/S
Stenager 13B · DK-6400 Sønderborg
Tel: +45 73 12 13 14 · Fax: +45 73 12 13 13
oj@ojelectronics.com · www.ojelectronics.com
The trademark is a registered trademark belonging to OJ Electronics A/S · © 2012 OJ ELECTRONICS A/S

Child lock

Allows thermostats in public and other places to be locked, thus
preventing unauthorised alteration of the settings. Press and hold
the left- and right-hand buttons simultaneously for 10 seconds. A
symbol indicates that the thermostat is locked.
The child lock can be released by pressing the left- and right-hand
buttons simultaneously for 10 seconds.

Factory settings

Allows factory settings to be restored. Your personal settings will
be deleted from the thermostat.
Press and hold the centremost button for 10 seconds. The display
is switched off and then on again. Application is shown on the
display (APp F) followed by the temperature setting.


Error messages

If a fault occurs, the master/thermostat will display one of the fol-
lowing error codes:
Error Fault Remedy
code
E0 Internal fault. Ther- Replace thermostat.
mostat defective.
E1 External room Replace sensor/sensor cable.
sensor defective To continue to operate the system
or short-circuited without sensor, set control type to
(terminals 10-11). Regulator under Application
(
APp C).
E2 External floor sensor Replace sensor/sensor cable.
defective or short- To continue to operate the system
circuited (terminals without sensor, set control type to
8-9). Regulator under Application
(
APp C).
E5 Internal overheating. Check installations. Check that
Thermostat shuts off heating cables are not overloaded
heating. or that ambient temperature is
excessive. When internal tem-
perature drops, the thermostat
automatically reactivates.
VDE Marking
According to the following standards,
EMC+LVD: EN 60730-1
EN 60730-2-9
English