SIGMA PC 3.11 User Manual
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3.3 frEquENTlY ASKED quESTIONS AND SErvICE
The display responds sluggishly or shows a black coloration,
what is the reason for this?
The operating temperature may have been exceeded or fallen below.
Your heart rate monitor is designed for a temperature of 1°C to 55°C.
what should I do if the display is faint?
A faint display may be the result of a weak battery. The latter should be
replaced as soon as possible – battery type CR 2032 (ref. no. 00342)
battery change
A CR 2032 battery (ref. no. 00342) is used in the heart rate monitor and
chest belt.
The SIGMA heart rate monitor is a state-of-the-art measuring instrument.
To ensure proper functioning and water tightness, the batteries should only
be changed by an authorized dealer. Incorrect battery changes can damage
the heart rate monitor leading to expiry of the claim to warranty.
After a battery change, the time has to be set again.