Bedienungsanleitung Wodtke Frank Airplus S4 (Seite 30 von 83) (Englisch)

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7 Error Analysis, Error Codes, Safety Functions and Safety

Devices

All stoves are equipped with numerous safety devices. Errors are classified as class 1 or class 2

errors. Class 1 errors must be reset manually by pressing the I/O key. Class 2 errors are

reset automatically.

7.1 Overview of class 1 errors & error codes (safety-relevant)

Class 1 errors are indicated by the operating state and error code(s) blinking alternately.

The error codes (see table) enable you to identify errors as either component errors or external

errors (relating to building installations). The first thing is to remove the cause of the error.

Possible causes are described in the following. External errors only occur when the system

requirements of our products are not met. Note: as a rule, error codes “TL”, “TP”, “ST” and “RE

Er1” usually indicate external errors.

Note: Do not pull the plug in the event of an error, since this would interrupt the internal

safety functions midway! Only pull the plug before performing work on the appliance.

Class 1 errors always trigger the following safety function:

• The appliance switches to “G OFF” or “Stand By”, and the fire gradually goes out. Any

automatic operation is broken off.

• The error code and the message “G OFF” or “stand-by dot” blink alternately.

• After the error has been corrected the appliance must be restarted using the I/O key.

• Restart/ Reset after class 1 errors is only possible if the cause of the error has been

removed! In the event of error code “ST” you also have to release the temperature cutoff

STB.

• Press the I/O key once for every error (“Reset” = error acknowledgement), for ex. in the

event of 2 errors press the I/O key twice.

Class 1

error code Cause of error Desired

values How to correct error

TL HI =

Temperature at air flow

sensor in suction pipe

too high

TL Grd =

Temperature rise TL

greater than 40 °C in 120

seconds (gradient).

Measuring point: in

suction pipe [unheated

resistor (see arrow) of air

flow sensor]

Photo of foul sensor

External error (

installation or

operating error). Caused by flow

reversal in suction pipe.

The air flow sensor has heated up

beyond the permissible limit. A TL

error is also triggered when

temperature rises too fast, as this also

points to flow reversal in the suction

pipe.

Possible causes include negative

pressure due to ventilation system,

exhauster hood or lack of chimney

draught or wind pressure via vent pipe

(if there is no chimney) or power

failure (fan). This error is usually

associated with a foul air flow sensor –

see picture. If, contrary to the

requirements, there is no chimney, this

can also occur in the event of a storm

with power failure when the wind

blows directly into the vent pipe.

TL < 85 °C

TL rises by no

more than 40

°C per 120 s

Note:

When flue gas

fan is motionless

in stand-by

mode, heat

radiation from

heated resistor

can cause TL to

rise above room

or appliance

temperature. For

this reason error

code TL HI is

inactive in

standby mode.

This is no hardware error!

Let appliance cool off or

wait until TL is no longer

rising and lower than

desired value.

Search for and correct

external cause. Only then do

manual reset via I/O key.

Note: If the temperature of the

air flow sensor rises to values

> 120 °C as a result of flue

gas flow reversal, this is

interpreted as a component

error, and the message LM

Er1 appears in the display

(see below). If the sensor is

still in good order, this error

can be reset after

temperature has returned to

the permissible range.

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