Valeo REVO-E - Error codes; ECU internal error; PWM axial fan defective; PWM double radial blowers defective

504
REVO-E Heat pump 5 Troubleshooting
5.5 Error codes
F01 ECU internal error
System behavior
– System not functioning & display off (GH) / LED not
blinking
or
– Display shows 'boot’ and ‘Err code’
Necessary inspections
– Test system using DCT
– Inspect the power supply of the SC620
Actions
–Replace SC620
F02 PWM axial fan defective
System behavior
– Refrigerant compressor stops during Cooling
Mode
– Axial fans do not run despite Cooling Mode being
activated
– System in Ventilation Mode despite cooling
demand from vehicle active
Necessary inspections
– Inspect axial fans. Use the DCT from the diagnos-
tic case.
– Inspect cable harnesses according to wiring plan
– Force control of system via DCT test mode "Active
with cooling”
Actions
–Replace SC620
– Replacing axial fans NOT necessary
F03 PWM double radial blowers defective
System behavior
– Failure of all double radial blowers in system
– Refrigerant compressor stops during Cooling Mode
– System in Ventilation Mode despite cooling being re-
quired in vehicle
Necessary inspections
– Inspect double radial blowers. Use the DCT from the
diagnostic case.
– Inspect cable harnesses according to wiring plan
– Force control of system via DCT test mode "Active
with cooling”
Actions
– Replace SC620
– Replacing double radial blowers NOT necessary
F04 24V power supply too low
System behavior
– double radial blowers not functioning
– Cooling Mode not functioning
– Power supply < 22V/ >10s
Necessary inspections
– Inspect 24V power supply (error active up to power
supply >28V)
Actions
– Bus servicing necessary
F05 External temperature signal not received >10s
System behavior
– Limited cooling function
– System in Cooling Mode
Necessary inspections
– Inspect external temperature sensor of bus
– Inspect CAN bus communication
Actions
– according to Volvo documentation
F06 600V system status not received >10s
System behavior
– Limited cooling functionality
– System in Cooling Mode
Necessary inspections
– Inspect system with DCT component test
– Inspect CAN bus communication
Actions
– according to Volvo documentation
F07 Temperature of air duct / outlet temperature too
high (T≥ 105°C)
System behavior
– Limited heating functionality
Necessary inspections
– Sensor values using DCT
– Sensor resistance on the sensor / to the SC620 plug
(SC620 not connected) according to wiring plan
10kOhm 12.5kOhm 15.7kOhm
25°C 20°C 15°C
– Voltage present on sensor when SC620 and sensor
plug connected
1.36V 1.5V 1.7V
25°C 20°C 15°C