Troubleshooting - Conrad FHT8 Bedienungsanleitung

12. Troubleshooting

Problem
Permanent acoustic signal
and display of "F1" on the
valve operating mechanism's
display.
Permanent acoustic signal
and display of "F2" on the
valve operating mechanism's nism not mounted on
display.
Permanent acoustic signal
and display of "F3" on the
valve operating mechanism's
display.
No antenna symbol displayed • Radio connection failure • Install heating control
on the valve operating
mechanism's display. At an
interval of one hour the valve empty.
operating mechanism gene- • Wrong heating control
rates a sequence of tones.
The valve opening is 30%.
"Low Bat" symbol displayed • Valve operating mecha-
on the display, for one hour
and at an interval of 2 min.
the valve operating mechanism
generates a sequence of tones.
Display of "LOC" when key is • Key lock is active.
pressed.
Possible cause
• Heavy operation of the
valve or blocked valve.
• Control range too wide.
• Valve operating mecha-
heating valve.
• Control range too narrow. • Re-install valve
due to interference.
• Heating control battery
code.
nism batteries almost
empty.
79
Remedy
• Remove valve opera-
ting mechanism.
• Manually check
valve operation.
•Re-install valve ope-
rating mechanism.
•If necessary ask a
heating expert for
advice.
• Re-install valve
operating mechanism.
• Unsuitable valve.
• Put a 1mm spacer
(e.g. a shim) between
heating valve and
actuator.
operating mecha-
nism.
• Unsuitable valve.
in a different loca-
tion.
• Replace heating
control batteries.
• Transmit the current
safety code to the
valve operating
mechanism.
• Replace the batteries.
• Deactivate the key
lock.