Fault Codes - Wolf BWL-1S-05 Installation And Operating Instructions Manual

39.5 Fault codes
Fault Short designation
code
12 Boiler sensor faulty Flow temperature (T_boiler) outside
14 DHW sensor faulty
15 Outside sensor
faulty
16 T_return
35 BCC missing
37 BCC incompatible
52 Max.cylinder
heating time
78 Header sensor
faulty
101 Electric heater
104 Fan
107 HC pressure
109 High pressure
110
Troubleshooting
Possible cause
permissible range (0 ... 95 °C)
Lead to sensor is faulty
Sensor faulty
DHW cylinder temperature outside
permissible range (0 ... 95 °C)
Lead to sensor is faulty
Sensor is not correctly positioned at
measuring point
Sensor faulty
Outside temperature outside permissible
range (-39 ... 50 °C)
Lead to sensor is faulty
Sensor faulty
Return temperature outside permissible range
(0 ... 95 °C)
Lead to sensor is faulty
Sensor faulty
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)
Lead to sensor is faulty
Sensor is not correctly positioned at
measuring point
Sensor faulty
Electric heater not connected
High limit safety cut-out of the electric heater
has tripped:
Before commissioning the heat pump
Scale build-up in electric heater
Air in the electric heater
Fan communication interrupted (ODU)
Pressure in heating circuit outside permissible
range (0.5 ... 3.0 bar)
Lead to pressure sensor faulty
Pressure sensor faulty
High pressure fault (ODU)
(cooling circuit/hot gas side)
Remedy
Check flow temperature (T_boiler)
Check lead and plug-in connection
Check/replace sensor
Check DHW cylinder temperature
Check lead and plug-in connection
Check position of sensor and if necessary
insert sensor correctly
Check/replace sensor
Check lead and plug-in connection
Check/replace sensor
Check return temperature
Check lead and plug-in connection
Check/replace sensor
Insert suitable appliance type connector
Insert suitable appliance type connector
Cylinder sensor (SF): check position and
insert correctly if necessary
Check parameter WP022 and adjust if
necessary
Descale the cylinder
Check lead and plug-in connection
Check position of sensor and if necessary
insert sensor correctly
Check/replace sensor
Check lead and plug-in connection
Acknowledge fault if WP090 = OFF
Perform reset of high limit safety cut-out on
electric heater
Have the notes in the installation instructions
regarding hot water treatment been
observed? Perform reset of high limit safety
cut-out on electric heater; after max. 3 resets,
replace electric heater.
Dry fire; replace the electric immersion heater
Contact service engineer
Check pressure in heating circuit
Check lead and plug-in connection
Replace pressure sensor
Contact service engineer
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