Rendamax E8.1121, Operating Instructions Manual, Page: 42 / 44

Operation
Installation and Start-up
42
Troubleshooting
General
If your system malfunctions you should
first check that the controller and the
control components are correctly wired.
Sensors
The sensors can be checked in the
"General/Service/Sensor test" level. All
the sensors that are connected must
appear in this level with plausible
measurements.
Actuators (mixer motors, pumps)
The actuators can be checked in the
"General/Service/Relay test" level. All
relays can be individually switched
using this level. This makes it easy to
check whether these components have
been correctly connected (e.g. mixer
motor direction of rotation).
BUS Connection
In control devices with connection to
Mixer motor => Communication symbol
appears in standard display ("
" or
"
v
" depending on version)
Boiler controller => Outside
temperature and boiler temperature
display (see "Display/Installation")
In boiler controller with connection
to
Control unit => Room temperature
displayed and current room
temperature setting blanked out "----"
(see "Display/heating circuit")
In mixer motor expansion controllers
with connection to
Boiler controller =>
Display of the outside temperature and
the heat generator temperatire
(see "Display / System“)
Control unit => Room temperature
displayed and current room set
temperature blanked out "----"
(see "Display/Heating circuit")
In case of communication problems
Check connecting cables: Bus lines
and sensor lines must be laid
separately, away from mains cables!
Poles switches?
Check bus feed: There must be at least
8V DC between the "+" and "-"
terminals of the BUS connector
(connector IX, terminals 3+4). If you
measure a lower voltage, an external
power supply must be installed.
Pumps do not switch off
Check manual / automatic switch =>
Automatic
Pumps do not switch on
Check operating mode => Standard
F
(test
B
)
Check time and heating program =>
Heating time
Check pump switching => Type of
pump switching
Standard => Outside temperature >
Room temperature setting?
Heating limits => Outside temperature >
Valid heating limit?
Room control => Room temperature >
Temperature s 1K
Burner does not switch of at correct
time
Check minimum heat generator
temperature and type of minimum
delimiter => Protect from corrosion
Burner will not switch on
Check set temperature of heat
generator => The set temperature must
be above the current heat generator
temperature.
Check operating mode => Standard
F
(test
B
)
Check BOB-VALUE
The current temperature of the heat
generator's solid fuel is greater than the
HS1 set temperature.
Technical data
Supply voltage to IEC 38 230 V AC ± 10%
Power consumption max. 8 VA
Switching capacity of the relays 250 V 2 (2) A
Maximum current on terminal L1' 10 A
Enclosure to EN 60529 IP 40
Safety class II to EN 60730 Totally insulated
Switch panel installation in acc. with
DIN IEC 61554 Recess 138x92
Power reserve of the timer > 10 hours
Permitted room temperature
during operation 0 to 50 °C
Permitted room temperature
during storage - 20 to 60 °C
Sensor resistances
-
Tolerance in ohms
- Temperature tolerance
-
Tolerance in ohms
- Temperature tolerance
NTC 5 k
Ω
(AF,KF,SPF,VF)
+/-1% at 25°C
+/- 0,2K at 25°C
PTC 1010
Ω
(AFS,KFS,SPFS,VFAS)
+/-1% at 25°C
+/- 1,3K at 25°C