Troubleshooting guide

Monark 839 E
20
Troubleshooting guide
Symptom Probable Cause/Corrective Action
LED does not light up. No current in the outlet. Check the fuses.
Right trafo? Check that the trafo information in section “Facts” is
consistent with the trafo used.
No connection to PC. Check cables.
Right COM port?
Drivers missing when using the USB-serial adaptor. CD with drivers is
included.
Is the right type cmd set?
Does not load work. The pendulum stuck Contact the service for fix / replacement.
Check that the pedal rpm is higher than 30 rpm. No work load is put on if
the actual rpm is lower than 30 rpm. See "Service menu" pedal reference.
The default setting is 30 rpm but can be adjusted to the desired value.
Check calibration
No heart rate is shown. Check the chestbelt (battery). Wet the thumbs and place them on the elec-
trodes. A low clicking sound will appear near battery lid while you click on
the electrodes with one thumb. Use another external HR monitor to check
the belt.
Check that the chest belt is positioned correct on test person and tight
enough. Check that the electrodes are wet, in hard cases it is necessary to
use a contact gel or a mixture of water with a few drops of washing-up liq-
uid. The level for HR signal can vary from person to person. Put chest belt
on another known person who has a good pulse rendering.
Check for loose cables or jack if you have a plug-in receiver. Use another
pulse receiver (pulse watch or test bike monitor) to check the chestbelt.
Check that it is the correct receiver and that it is in the correct place. If it
has a round Polar-sticker it should be placed straight.
No rpm reading. Check cable.
Unable to calibrate force. Potentiometer belt may be slipping or broken. Replace if damaged. Poten-
tiometer misadjusted. Reboot memory from service menu (99). Set default
(3). Then calibrate the electronics again.
Uneven heart rate. Use an external unit, for example a pulse watch, to check if it also indicates
irregular pulse. If this is the case, there is probably disturbance in the room.
Magnetic fields from high voltage cables, elevators, fluorescent tube etc.
can cause the disturbance. Other electronic equipment could be placed too
close. Move the bike to a different location in the room or change rooms. If
irregular pulse remains we recommend measuring HR manually. If HR still
remains irregular at workload test person’s health need to be examined.
There is a click noise with every pedal
revolution (increases with the weight).
The pedals are not tight. Tighten them or change pedals.
The crank is loose. Check, tighten.
The base bearing is loose. Contact your dealer for service.
Scratching noise is heard when pedalling. Check that the carriage block is taken off and that none of the covers is
scratching.
There is a click noise and a squeak noise
when pedalling.
Loosen the chain.