Wolf CWL-300 - Faults and Troubleshooting; Fault Code Table

Heat Recovery unit CWL-300(B) / CWL-400(B) with option PCB 13
Faults Chapter 5
Fault code Cause Action user Action installer
F2
The input fan has stopped. Contact the installer. • Replace the input fan.
F5
The output fan has stopped. Contact the installer.
•
Replace the output fan .
F9
The temperature sensor that
measures the temperature of
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The appliance operates as ex-
pected, but the bypass is out of
operation.
Contact the installer.
• Check the wiring from the sensor to the
basic pcb.
• Check the sensor connection to the
wiring.
• Replace the sensor.
F10
The temperature sensor that
measures the temperature of
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The appliance operates as ex-
pected, but the bypass is out of
operation
.
Contact the installer.
• Check the wiring from the sensor
to the basic pcb.
• Check the sensor connection to
the wiring.
• Replace the sensor
.
F11
The postheater sensor is not
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cuited or it has come loose.
CWL operates as expected, but
the postheater is out of opera-
tion.
Contact the installer.
• Check the wiring and the connection to
the postheater sensor.
• Replace the sensor.
5.1 Fault codes table CWL 300/400(B) with option pcb