Wolf BWL-1 S Installation And Operating Instructions Manual page 111

Fault Short designation
code
12 Boiler sens. faulty
14 DHW sensor faulty
15 Outs. sensor faulty
16 T_return
32 Power failure 23 V
35 BCC missing
37 BCC incompatible
52 Max. cylinder
heating time
78 Header sensor
fault
101 Elec. heating
104 Fan
107 HC pressure
3064298_201507
55. Troubleshooting
Possible cause
Flow temperature (T_boiler) outside
permissible range (0 ... 95 °C)
Cable to sensor is faulty
Sensor faulty
DHW cylinder temperature outside
permissible range (0 ... 95 °C)
Cable to sensor is faulty
Sensor is not correctly positioned at
measuring point
Sensor faulty
Outside temperature outside permissible
range (-39 ... 50 °C)
Cable to sensor is faulty
Sensor faulty
Return temperature outside permissible
range (0 ... 95 °C)
Cable to sensor is faulty
Sensor faulty
23V power supply failure
Appliance type connector missing
Wrong appliance type connector
The maximum cylinder heat time is longer
than permitted
Header temperature outside permissible
range (0 ... 95 °C)
Cable to sensor is faulty
Sensor is not correctly positioned at
measuring point
Sensor faulty
Electric booster heater not connected
High limit safety cut-out of the electric heating
has tripped:
Before commissioning the heat pump
Scale build-up in electric heating
Air in the electric heating
Fan communication interrupted (ODU)
Pressure in heating circuit outside
permissible range (0.5 ... 3.0 bar)
Cable to pressure sensor faulty
Pressure sensor faulty
Remedy
Check flow temperature (T_boiler)
Check cable and plug-in connection
Check / replace sensor
Check DHW cylinder temperature
Check cable and plug-in connection
Check position of sensor and if necessary
insert sensor correctly
Check / replace sensor
Check cable and plug-in connection
Check / replace sensor
Check return temperature
Check cable and plug-in connection
Check / replace sensor
Contact service engineer
Insert suitable appliance type connector
Insert suitable appliance type connector
Cylinder sensor (T_DHW): Check position and
insert correctly if necessary
Check parameter WP022 and adjust if
necessary
Descale cylinder
Check cable and plug-in connection
Check position of sensor and insert correctly
if necessary
Check / replace sensor
Check cable and plug-in connection
Acknowledge fault if WP090 = OFF
Perform reset of high limit safety cut-out on
electric heating
Have the notes in the installation instructions
regarding hot water treatment been observed?
Perform reset of high limit safety cut-out on
electric heating, after max. 3x resets, replace
electric heating.
Dry fire, replace the electric heating rod
Contact service engineer
Check pressure in heating circuit
Check cable and plug-in connection
Replace pressure sensor
111