3 5
3062087_0207
Troubleshooting
Any faults will be displayed as fault code by Wolf controllers with eBUS capability. To these faults, cause and remedy may be allocated
using the following table. This table is designed to allow your local heating contractor to trace the fault more easily.
Fault
Fault
Cause
Remedy
code
1
TBV excess
The flow temperature has exceeded the limit for
Check the system pressure. Check the heating
temperature
TBV shutdown temperature exceeded.
circuit pump. Check the step switch of the
HC pump. Vent the heating system. Press
Heat exchanger severely contaminated.
the reset button. Clean the heat exchanger.
4
None
No flame established during the burner start
Check the gas supply pipe and open the gas
Flame established
tap, if necessary. Check the ignition electrode
and ignition cable. Press the reset button.
6
TW excess
The flow/return temperature has exceeded
Check the system pressure. Vent the system.
temperature
the limit for the TW shutdown temperature.
Set the pump to stage 2 or 3.
11
False flame signal
A flame is recognised before the burner
Press the reset button.
starts.
12
Flow sensor faulty
The sensor for the flow temperature or
Check the lead.
the lead are faulty (sensor 1 or sensor 2).
Check the flow sensor.
15
Outside temperature
The sensor for the outside temperature or
Check the lead.
sensor faulty
the lead is faulty.
Check the outside temperature sensor.
22
Lack of air
No differential pressure switch ON.
Press the reset button; check the silicone
hoses to the differential pressure switch.
Check the flue gas system and gas fan.
Check the differential pressure switch.
23
Fault differential
Differential pressure switch does not
Press the reset button. Replace the
pressure switch
switch OFF.
differential pressure switch, if required.
41
Flow
Flow temperature 2, flow temperature 1 > 12 K
Vent the heating system, check the system
monitoring
Excessive temperature change
pressure. Check the heating circuit pump.
45
Fault sensor
Lead or sensor faulty or not
Check the lead and and replace the sensor,
Throughput
connected
if required.
46
Fault sensor
Lead or sensor faulty or not
Check the lead and and replace the sensor,
DHW outlet
connected
if required.
temperature
