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ENGLISH
11. TROUBLESHOOTING
Safety note: Disconnect the device from the mains before performing any
maintenance work. Wear appropriate protective clothing when working on the
device.
Problem
Solution
Indicators in the display are hard to read.
• Ensure sufficient and good
lighting in the room. Make sure
the light does not reflect from the
display.
Which chest straps are recommended/
compatible?
• Most commercially available
chest straps are suitable. Make
sure the chest strap is not
encoded and transmits with a
frequency of 5 kHz.
•
Note:
If there is no display while
wearing a chest strap, check the
batteries of the chest strap. (A
heart rate monitor might work
with almost empty batteries, but
the receiver of the computer
requires higher signal strength.)
The pulse rate values are skipping/ are
displayed irregularly.
• Measuring the pulse rate
using hand pulse sensors is
naturally not as precise as
measuring using a chest strap.
It depends on the skin structure
(thickness), sweat, etc. The
hand pulse sensors (or the
device) can become statically
charged during workout due to
friction, disrupting the heart rate
measurement as a result.
TIP:
Placing a special anti-static mat
underneath can help prevent
static charge.
• Furthermore, the following
factors can affect the pulse rate
measurement (both via hand
pulse sensors or chest strap):
Mobile phones, TVs, radios,
power lines, transmission
towers, electrified railway lines,
etc. Make sure the surrounding
of the device is free from such
interfering sources.
Problem
Solution
Remove the pedal crank and side covers to
perform repairs inside the device.
• Unscrew the nut (54) that
secures the crank against the
axis. Then screw the puller (not
included) into the thread of the
pedal crank, fix the pin to the
pedal axis, and then pull off the
crank by screwing the pin further
in. To remove the side covers,
loosen the Phillips screws
located in the recesses.
The computer does not display the pulse rate.
Measuring via hand pulse
sensors:
• Check the plug-in connectors of
the pulse cable to the computer.
Measuring via chest strap:
• Check the compatibility of your
chest strap; it must not be
encoded and must transmit with
a frequency of 5 kHz.
• Check the batteries of the chest
strap.
The pedal resistance can be adjusted using the
computer, but is not applied to the device (no
pedal resistance).
• Check if the V-belt is worn
out or torn. (This might be
the case, if the flywheel does
NOT decelerate after you stop
pedaling.)
• Check the plug-in connections
of the computer cable (between
computer and control).
• Check the plug-in connections
on the control board.
• Replace the control board.
GRG-SRP-3000-IM-DE+GB+FR-V1.indb 58-59
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