ENGLISH
93
Error code
displayed
Meaning
Cause
Action
T0 ---
Fault on sensor
T0
Faulty sensor or wire breakage
or short circuit in the sensor
circuit.
Check the resistance of the
sensor circuit, replace the
sensor if necessary.
Thermal energy
measurement
function activated.
Sensor T0 is not connected.
Connect T0 or disable the
OHQM function.
T1 ---
Fault on sensor
T1
Faulty sensor or wire breakage
or short circuit in the sensor
circuit.
Check the resistance of the
sensor circuit, replace the
sensor if necessary.
T2 ---
Fault on sensor
T2
Faulty sensor or wire breakage
or short circuit in the sensor
circuit.
Check the resistance of the
sensor circuit, replace the
sensor if necessary.
T3 ---
Fault on sensor
T3
Faulty sensor or wire breakage
or short circuit in the sensor
circuit.
Check the resistance of the
sensor circuit, replace the
sensor if necessary.
T4 ---
Fault on sensor
T4
Faulty sensor or wire breakage
or short circuit in the sensor
circuit.
Check the resistance of the
sensor circuit, replace the
sensor if necessary.
Hot water
circulation
function activated.
Sensor T4 is not installed.
Install sensor T4 or disable the
function.
Any problems are usually caused by peripheral equipment, and not by the controller. The following chart
lists some of the most common problems and how to rectify them. Always refer to the troubleshooting
chart before contacting your authorised service representative for help.
Problem
Resulting problems
Possible cause
Action
The controller
does not seem to
work.
The screen is blank and
the background lighting is
off.
Program error or power
supply failure.
Make sure the power cord
is connected. Press the
reset button.
The solar
collector
circulation pump
does not start
despite the
switch-on
condition being
met.
The symbol for the pump
flashes on the screen.
Power supply failure to
the pump.
Check the power cord to
the pump.
The pump will not
run.
The pump symbol is not
flashing on the screen.
is displayed or
is
flashing.
The maximum permitted
storage tank temperature
(SMX) has been reached.
The maximum permitted
solar collector
temperature (EM) has
been reached.
This is not an error.
Error message T1 --- is
displayed.
Faulty temperature
sensor or wire breakage
or short circuit in the
sensor circuit.
Check the temperature
values for each
temperature sensor.
Replace faulty sensors
and/or sensor cables.
The solar
collector
circulation pump
starts although
the switch-on
condition is not
met.
The pump symbol is
flashing on the screen.
Holiday function, frost
protection function or
tank-cooling function is
activated.
This is not an error. Disable
respective functions, if
necessary.
