Wolf FGB-35 - Fault Code Troubleshooting - Part 2

3064458_201811
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34. Troubleshooting
Fault
code
Fault Possible causes Remedy
06 Temp. limiter excess
temp.
The ow sensor has exceeded the limit
of the temperature limiter (95 °C)
System pressure
Air in heating circuit
Temperature limiter in the ow
Pump
Check system pressure.
Vent heating circuit.
Temperature limiter in the flow:
- Check leads and plug-in connections.
- If electrical connection OK and
no function, replace temperature limiter.
Pump:
- Check if pump is running.
- If not, check cables and plugs.
- If electrical connection OK and
no function: Replace pump.
Press reset button.
07 Flue gas TL, excess
temperature
The ue gas temperature has exceeded
the limit of the ue gas temperature lim-
iter shutdown temperature of 115 °C.
Combustion chamber
Flue gas temperature limiter
Combustion chamber:
- If the combustion chamber is heavily
contaminated, carry out maintenance or
replace.
Flue gas temperature limiter:
- Check leads and plug-in connections.
- If electrical connection OK and
no function: Replace temperature limiter.
Press reset button.
11 Flame pretence Flame signal is detected when burner
is off.
Check monitoring electrode.
Press reset button.
12 Boiler sensor faulty Boiler sensor or sensor lead has short
circuit or pump break.
Pump:
- Increase the minimum pump speed.
Excess flow temperature:
- Increase the minimum pump speed.
Boiler sensor:
- Check leads and plug-in connections.
- If OK and no function, replace the boiler
sensor.
Press reset button.
13 Flue gas sensor faulty Flue gas sensor or sensor lead has
short circuit or break.
Flue gas temperature sensor:
- Check leads and plug-in connections.
- If electrical connection OK and
no function: Replace the sensor.
Reset / switch power supply OFF/ON.
14 DHW sensor faulty DHW sensor (cylinder sensor) or sensor
lead has short circuit or break.
DHW temperature sensor:
- Check leads and plug-in connections.
- If OK, replace sensor.
Press reset button.
15 Outside sensor faulty Outside sensor or sensor lead has short
circuit or break.
Outside temperature sensor:
- Check leads and plug-in connections.
- Check for wireless reception interference
or if outside sensor battery is flat.
16 Return sensor faulty Return sensor or sensor lead has short
circuit or break.
Return sensor:
- Check leads and plug-in connections.
- If OK and no function, replace the return
sensor.
24 Fan speed <
(too low)
Set fan speed is not achieved. Fan:
- Check cables, plug-in connections, power
supply and switching.
- If OK and no function: Replace the fan.
Press reset button.