Supplied By www.heating spares.co Tel. 0161 620 6677
TROUBLESHOOTING - RT10
8 716 115 748 (2009/09)
68
10 TROUBLESHOOTING - RT10
In the event of a fault in the heating appliance, the
display will show e.g.
A7 E
.
In the event of a fault in the FW 100, the display will
show e.g.
1A4 E
.
Here the figure
1
stands for a fault in the FW 100 and the
letter
E
for Error (= fault):
Display Cause
Remedy
1A4 E
Temperature
sensor in the
FW 100 defective.
Replace FW 100.
1A8 E
TD 200 using the
bus no longer
responds.
Check bus connection
and, if necessary, rectify
interruption.
Heating appliance
using the bus no
longer responds.
Check bus connection
and, if necessary, rectify
interruption.
e.g.:
A7 E
...
Error display for
the heating
appliance.
Rectify the fault in
accordance with the
heating appliance
documentation.
Tab. 34
Complaint
Cause
Remedy
Required
temperature
not reached
Thermostatic
valve(s) in the
room set to low
Open the thermostatic
valve(s).
Flow
temperature
controller on the
heating
appliance set
too low
Set flow temperature
controller higher.
Air lock in the
heating system
Vent radiator and
heating system.
Required
room
temperature
is greatly
exceeded
Installation
location of the
FW 100 not
suitable, e.g.
outer wall,
proximity to
window,
draught, ...
Choose a better
installation location
move the FW 100.
Excessive
room
temperature
fluctuations
Temporary effect
of heat from
other sources on
the room, e.g.
from sunshine,
room lighting,
TV, fireplace etc.
Choose a better
installation location
and move the FW 100.
Temperature
rise instead
of fall
Time of day set
incorrectly on
the TD 200
Check setting.
Room
temperature
too high in
low mode
Building has high
degree of heat
storage
Select low mode
earlier.
Incorrect or
no control
Bus connection
defective for the
devices using
the bus
Check the bus
connection and, if
necessary, rectify
according to the
connection diagram.
Tab. 35
