Appendix
44
Installation and maintenance instructions ecoTEC exclusive 0020186710_06
Code
Parameter
Possible causes
F.81
Fault: cylinder charging pump
Only in conjunction with F.91
Cylinder is not fully charged after specified time.
–
Check cylinder charging sensor and cylinder sensor
–
Air in the
actoSTOR
pump
–
Inspect cable harness for pump
–
Check the impeller sensor and/or limiter in the product
–
Prioritising diverter valve defective
–
Secondary heat exchanger blocked
–
Pump defective
F.82
Fault: Ext. current anode
External current anode not connected:
–
X43 edge connector with bridge missing from the PCB
External current anode connected:
–
Power supply to the external current anode was interrupted
–
Cable between PCB and external current anode defective
–
External current anode defective
F.83
Fault: NTC temp. gradient
When the burner starts, the temperature change registered at the flow
and/or return temperature sensor is non-existent or too small.
–
Insufficient water in product
–
Flow or return temperature sensor not in correct position at pipe
F.84
Fault: NTC temp. diff. implausible
Flow and return temperature sensors returning implausible values.
–
Flow and return temperature sensors have been inverted
–
Flow and return temperature sensors have not been correctly in-
stalled
F.85
Fault: NTCs fitted incorrectly
The flow and/or return temperature sensors have been installed on the
same pipe/incorrect pipe
F.90
Fault: Communication
Check the cable harness from the product to the
actoSTOR
module
(PEBus).
If the product is to be operated without an
actoSTOR
module, set
D.092
= 0.
F.94
Fault: Vortex and differential pressure
Check: Pump (function), cable harness, plug, sensors.
LED
actoSTOR
module
actoSTOR electronics status
LED on: Communication OK
LED flashing: Communication not OK
LED off: No power supply
Commu-
nication
fault
Communication fault
Communication fault between display and PCB in the electronics box
