Braun IRT 4520 Specifications download pdf (Page 10)

Trouble-shooting

Error message Situation Solution

No lens filter is attached. Attach new, clean lens filter.

The thermometer cannot identify

a secure position of the probe.

An accurate measurement was

not possible.

POS = position error

IRT 4020:

Clear the display by

pushing the «start» button once.

IRT 4520: Clear the display by

pushing the «I/O» button once.

Take care that the positioning of

the probe is correct and remains

stable.

Ambient temperature is not within

the allowed operating range

(10 – 40 °C or 50 – 104 °F).

Allow the thermometer to remain

in a room for 30 minutes where

the temperature is between

10 and 40 °C or 50 and 104 °F.

Temperature taken is not within

typical human temperature range

(34 – 42.2 °C or 93.2–108 °F).

HI = too high

LO = too low

Make sure a new, clean lens filter

is attached and thermometer is

properly inserted. Then, take a

new temperature.

System error – self-check display

flashes continuously and will not

be followed by the ready beep

and the ready symbol.

If error persists,

If error still persists,

Wait 1 minute until the thermo-

meter turns off automatically, then

turn on again.

... reset the thermometer by re-

moving the batteries and putting

them back in.

… have the thermometer checked

at a Braun Customer Service

Center.

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Braun IRT 4520 Specifications Page 10

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