Wolf SM2 Installation And Operating Instructions Manual page 40

If the SM2 recognises a fault, the red LED flashes and the fault code of the solar module is displayed
in the associated BM or BM-Solar. When using the SM2 as part of a Wolf control system, the fault
code will also be displayed on the central BM programming module with address 0.
The following fault messages can occur at the SM2:
Fault Fault
code
FC64 Pulse transducer faulty
FC71 Solar sensor cylinder 1
faulty
FC72 Sensor at input E1
faulty
FC73 Sensor at input E3
faulty
FC79 Solar sensor collector
array 1 faulty
FC81 EEPROM fault
Changing a fuse:
Note:
How to change a fuse:
40
Fault codes / Changing a fuse
Cause
Pulse generator or lead
faulty
Faulty sensor or lead
Faulty sensor or lead
Faulty sensor or lead
Faulty sensor or lead
Parameter value outside
valid range.
If the SM2 shows no function at all and there is no LED display,
although power is ON, check the appliance fuse and change it,
if required.
If the SM2 is operated as part of the Wolf control system,
the display of one of the existing BM programming modules
is retained, as this is supplied via the eBUS link to the other
control components.
Prior to opening the casing, isolate the solar module from the
power supply.
1. Isolate the unit from the power supply
2. Remove the lid from the wiring chamber by undoing
both screws
3. Remove the casing top with a screwdriver
4. The fuse is located on the left on the PCB below the
transformer (fine-wire fuse 5x20/6.3 A/M)
Remedy
Check pulse generator
and lead; replace, if
required
Check sensor and lead;
replace, if required
Check sensor and lead;
replace, if required
Check sensor and lead;
replace, if required
Check sensor and lead;
replace, if required
Reset to standard values.
Briefly interrupt the power
supply and check settings.
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