505
REVO-E Heat pump
5 Troubleshooting
Actions
–
Measured values on sensor NOK => replace sensor
–
Measured values on cable harness (SC620 side)
NOK => inspects pin / replace cable harness
–
Measured values on cable harness (SC620 side) OK
=> replace SC620
F08 Temperature of air duct / outlet temperature too
low (T<= -40°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
Actions
–
Measured values on sensor NOK => replace sensor
–
Measured values on cable harness (SC620 side)
NOK => inspects pin / replace cable harness
–
Measured values on cable harness (SC620 side) OK
=> replace SC620
F09 Temperature of recirculated air / passenger cabin
too high (T
≥
105°C)
System behavior
–
Limited heating functionality
–
Limited cooling 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 (SC620 / sensor plug con-
nected)
1.36V
1.5V
1.7V
25°C 20°C
15°C
Actions
–
Measured values on sensor NOK => replace sensor
–
Measured values on SC620 plug NOK => inspect pins
/ replace cable harness
–
Measured values on cable harness SC620 side OK
=> replace SC620
F10 Temperature of recirculated air / passenger cabin
too low (T<= -40°C)
System behavior
–
Limited cooling functionality
–
System in Cooling Mode
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 (SC620 / sensor plug con-
nected)
1.36V
1.5V
1.7V
25°C 20°C
15°C
Actions
–
Measured values on sensor NOK => replace sensor
–
Measured values on SC620 plug NOK => inspect pins
/ replace cable harness
–
Measured values on cable harness SC620 side OK
=> replace SC620
F11 Sensor value high pressure implausible high
(evaluation of sensor signal)
(measured value Pabs > 26bar)
System behavior
–
Error occurs after multiple switching of the high-pres-
sure safety switch
–
only in combination with F18
In Cooling Mode:
–
default value high pressure 20bar
–
axial fans maximum speed
In Heat Pump Mode:
–
radial blowers maximum speed
–
compressor minimum speed
Necessary inspections
–
Sensor values using DCT
–
Check pressure with pressure gauge and calibrate
with sensor values
(Attention: sensor values are absolute values)
–
Sensor resistance 5.4kOhm on the sensor / to the
SC620 plug (SC620 not connected) according to
wiring plan when compressor has not been function-
ing for long period of time
–
Voltage present on sensor (SC620 / sensor plug con-
nected) when system running
~7.4bar ~6.4bar
1.36V
1.5V
When compressor has been off for a longer time
1.7V at 15°C
Summary of Contents for REVO-E
Page 1: ...Rev 06 2019 Id No 11123006A REVO E Heat pump Volvo Workshop Manual AIR CONDITIONING...
Page 51: ...605 REVO E Heat pump 6 Wiring plan Fig 601 Wiring diagram for REVO E HP Sheet 4...
Page 52: ...606 REVO E Heat pump 6 Wiring plan Fig 601 Wiring diagram for REVO E HP Sheet 5...
Page 55: ...609 REVO E Heat pump 6 Wiring plan Fig 602 Wiring diagram for REVO E HP Sheet 1...
Page 56: ...610 REVO E Heat pump 6 Wiring plan Fig 602 Wiring diagram for REVO E HP Sheet 2...
Page 57: ...611 REVO E Heat pump 6 Wiring plan Fig 602 Wiring diagram for REVO E HP Sheet 3...
Page 59: ...613 REVO E Heat pump 6 Wiring plan Fig 602 Wiring diagram for REVO E HP Sheet 5...
Page 87: ...memos...
