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Bedienungsanleitung Steuerung S4_2006_09_25-neu.doc Page 32 / 83
© wodtke GmbH Tübingen. All rights reserved. Subject to change without notice. Month of issue xx/2007 Art. No. 950 281
Error code Cause of error How to correct error
LM Er1 =
Broken air flow sensor
Case A:
broken air flow sensor (= component error)
Case B: external error through flue gas reversal.
Temperature of sensor element > 120 °C (see also
error description for TL). If sensor heats up to > 120
°C as a result of flue gas reversal, this is interpreted
as a component error (breakage) and the message
“LM Er1” appears. If the sensor is not permanently
damaged, you can switch the appliance on again as
soon as the appliance or sensor has cooled off
again.
Case A:
Replace air flow
sensor + reset via I/O key.
Case B: No need to replace air
flow sensor. Search for rectify
external error (see error
concerning TL for possible
causes) + reset via I/O key.
LM Er2 =
Short circuit in air flow
sensor
Short circuit = component error Test air flow sensor and
replace if necessary + reset via
I/O key.
TR Er1 =
Flue gas sensor broken Breakage = component error Test TR sensor and replace if
necessary + do manual reset
via I/O key
TR Er2 =
Short circuit in flue gas
sensor
Short circuit = component error Test TR sensor and replace if
necessary + do manual reset
via I/O key
TP Er1 =
Pellet chute sensor
broken
Breakage = component error Test TR sensor and replace if
necessary + do manual reset
via I/O key
TP Er2 =
Short circuit in pellet
chute sensor
Short circuit = component error Test TR sensor and replace if
necessary + do manual reset
via I/O key
HB Er1 =
Operating panel or cable
connecting operating
panel to main circuit
board broken
Breakage = component error Test operating panel
/connecting cable and replace
if necessary + do manual reset
via I/O key. If display is broken,
error message will remain
active even if a new operating
panel has already been
installed. In this case briefly
press I/O key to permit
recognition of new operating
panel.
RE Er1 =
Bridge at “auxiliary input“
is open
Bridge wire “auxiliary input“ is open or error in
external component/appliance.
Note:
The “auxiliary input“ is for feedback from external accessories. 15
seconds after every start the system checks whether this input is
bridged, i.e. closed, and the preheating programme is only
started if this is the case. The “auxiliary input” is constantly
monitored. Opening of the bridge at the “auxiliary input” results in
an error shutdown / activates the safety function (class 1 error).
Application examples (see also assembly instructions):
1) Flue gas exhaust flap: If a mechanical or motorised exhaust
flap is used, you can connect the make-contact from this flap to
the auxiliary input. The pellet stove will then only start up if the
exhaust flap is open. Any error at the exhaust flap will cause the
appliance to shut down through a safety function. If the motorised
exhaust flap is not completely open within 15 seconds, this will
trigger an error message due to delayed feedback to the
appliance.
2.) Inlet flap for combustion air: function, use and wiring as with
an exhaust flap.
3) Disable function through ventilation system / exhauster hood: If
the ventilation system or exhauster hood has a potential-free
output as operating signal, this output can be connected to the
auxiliary input as a break-contact. In this case the pellet stove will
only go into operation when the exhauster hood / ventilation
system is not in operation.
All the above applications can be connected in series, and the
pellet stove will then only go into operation if all external devices
are working properly and shut down as soon as an error occurs in
any one of them.
Check bridge wire at “auxiliary
input” and mount correctly.
If you are using an external
device, check its wiring and
function (especially make-
contacts) and replace as
necessary.
Then do a manual reset via I/O
key.
Note: To do a reset and
restart after error message
RE Er1, make sure that the
“auxiliary input” has been
bridged again (contact
closed).
Note: If external devices are
connected in series, you have
to check all devices and the
entire external wiring.
32


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