Conrad FHT8R - 14 Troubleshooting

14. Troubleshooting
Problem Possible cause Remedy
Permanent acoustic signal • Heavy operation of the • Remove valve opera-
and display of "F1" on the valve or blocked valve. ting mechanism.
valve operating mechanism's • Manually check
display. valve operation.
•Re-install valve ope-
rating mechanism.
•If necessary ask a
heating expert for
advice.
Permanent acoustic signal • Control range too wide. • Re-install valve
and display of "F2" on the • Valve operating mechanism operating mecha-
valve operating mechanism's not mounted on heating nism.
display. valve. • Unsuitable valve.
• Put a 1mm spacer
(e.g. a shim) between
heating valve and
actuator.
Permanent acoustic signal • Control range too narrow. • Re-install valve
and display of "F3" on the operating mecha-
valve operating mechanism's nism.
display. • Unsuitable valve.
No antenna symbol displayed • Radio connection failure • Install heating control
on the valve operating due to interference. in a different loca-
mechanism's display. At an • Heating control battery tion.
interval of one hour the valve empty. • Replace heating
operating mechanism generates • Wrong heating control control batteries.
a sequence of tones. The valve code. • Transmit the current
opening is 30%. safety code to the
valve operating
mechanism.
"Low Bat" symbol displayed on • Valve operating mecha- • Replace the batteries.
the display, for one hour and at nism batteries almost
an interval of 2 minutes the valve empty.
operating mechanism generates
a sequence of tones.
Display of "LOC" when key is • Key lock is active. • Deactivate the key
pressed. lock.
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3. Explications des symboles

Le symbole de l´éclair dans un triangle est utilisé pour signaler
un danger pour votre santé, p. ex. par un choc électrique.

Dans ce mode d’emploi, un point d’exclamation placé dans un
triangle signale les informations importantes à respecter
impérativement.
☞
Le symbole de la « main »précède les recommandations et indi-
cations d´utilisation particulières.
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