Wolf COB-2 - Warning Messages

Fault
68 | WOLF GmbH 3066501_201910
Fault
code
Message Cause Remedy
107 HC pressure – System pressure too low.
– Supply line pressure sensor faulty.
– Pressure sensor faulty.
► Check system pressure.
► Check if supply line is faulty.
► Check pressure sensor cables
and plug-in connections.
If OK but no function:
► Replace pressure sensor.
► Press reset button.
Table 8.1 Fault messages
8.4.2 Warning messages
Warning messages do not lead directly to the heat generator being switched OFF. The issue which
caused the warning may lead to malfunctions or faults.
► These issues must be rectied by a contractor.
Warning
codes
Message Cause Remedy
4 No ame – When the burner starts, no
ame forms by the end of
safety time.
– Ignition electrodes
contaminated.
– Air in the oil feed line.
– Heat generator contaminated
► Check oil line and oil level.
► Check ignition electrodes and
ignition transformer.
► Check solenoid valve for oil
pump.
► Check that the condensate can
drain off freely.
► Press reset button.
► Check CO
2
values.
► Service the equipment.
5 Flame failure – Flame failure during operation.
– Flue gas return system (ue
gas in the supply air).
– Air in the oil feed line.
– Heat generator contaminated.
► Check ue system for leaks.
► Check oil line and oil level.
► Press reset button.
► Check CO
2
values.
► Service the equipment.
22 Differential pressure
sensor not responding
– Differential pressure too low in
pre-purge phase.
– Differential pressure sensor or
cable defective.
► Check supply air and ue gas
path.
► Check differential pressure
sensor.
► Check lead.
23 Differential
pressure sensor not
deactivating
– Differential pressure sensor
fails to switch back.
► Check differential pressure
sensor.
24 Speed fault
Fan
– Set fan speed is not achieved. ► Check power cable to fan.
► Check fan.
► Press reset button.
26 Fan fault – The fan does not stop. ► Check power cable to fan.
► Check fan.
► Press reset button.
107 HC pressure – System pressure too low.
– Supply line pressure sensor
faulty.
– Pressure sensor faulty.
► Check system pressure.
► Check if supply line is faulty.
Pressure sensor:
► Check cables and plug-in
connections. If OK but no
function:
► Replace pressure sensor.
► Press reset button.
Table 8.2 Warning messages