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Faults
lCD display off
Make sure the controller is powered: using a digital multimeter, check the presence of voltage at terminals 24 and 25.
In case of no voltage, check the wiring.
If the voltage is sufficient (Range 195 – 253 Vac), check the fuse. The fuse is located inside the controller: to
access it, follow points 1 and 2 of the paragraph regarding Controller Assembly.
lCD display on
The possible operation error conditions are shown on the controller's LCD display.
Card fault code
F81
F82
F83
F84
F85
F87
Fault 81 - upper hot water tank Pt1000 sensor S1 fault
Only with SYSTEM 2 and SYSTEM 3
The sensor fault, understood as a short circuit or open circuit, causes deactivation of the output relay connected
to terminals 13-14-15 (FREE CONTACT on the 11-pole connector). On eliminating the fault, the protection is
immediately deactivated.
To signal this fault, the symbol S1 will be deactivated whereas the fault symbol, the symbol S1 and the backlight
will start flashing.
Fault 82 - Hot water tank ntC sensor S2 fault
The sensor fault, understood as a short circuit or open circuit, causes deactivation of the solar circulating pump
and closing of the shutter. On eliminating the fault, the protection is immediately deactivated.
To signal this fault, the symbol S2 will be deactivated whereas the fault symbol, the symbol S2 and the backlight
will start flashing.
Fault 83 - Solar collector sensor Pt1000 S3 fault
The sensor fault, understood as a short circuit or open circuit, causes deactivation of the solar circulating pump
and closing of the shutter. On eliminating the fault, the protection is immediately deactivated.
To signal this fault, the symbol S3 will be deactivated whereas the fault symbol, the symbol S3 and the backlight
will start flashing.
Fault 84 - Solar collector return ntC sensor S4 fault
Only with SYSTEM 1
The sensor fault, understood as a short circuit or open circuit, does not cause deactivation of the solar circulating
pump. The system must simply work as though Basic System were set. On eliminating the fault, the protection
is immediately deactivated.
To signal this fault, the symbol S4 will be deactivated whereas the fault symbol, the symbol S4 and the backlight
will start flashing.
Only with SYSTEM 3
The sensor fault, understood as a short circuit or open circuit, does not cause deactivation of the solar circulating
pump. The system must simply work as though System 2 were set. On eliminating the fault, the protection is
immediately deactivated.
Description of Fault
Upper hot water tank PT1000 sensor S1
Hot water tank NTC sensor S2
Solar Collector PT1000 sensor S3
Solar Collector return NTC sensor S4
Controller configuration fault
Protection for no circulation
cod. 3540V011 - 03/2017 (Rev. 00)
ECOTRONIC tech
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