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Check the Blowers
1.
With the system completely setup, Start the system.
2.
Once the system has started, after the fuel cell system has been short circuited 5 times as
part of the startup procedure the blowers will start to turn, pulling air through the fuel cell.
a)
If all the blower(s) are creating non-standard noise, turning slowly, or not turning at all.
i. Check carefully that there are no obstructions in the blower(s).
ii. Carefully spin the blowers using your finger make sure there is rotation movement,
without obstructions.
iii. The electrical supply from the controller needs to be checked, by applying
the 12V/24V external power supply directly to the 8pin plug connector points for the fans and
monitoring the performance of the blowers.
iv. If the blowers are not running or running slowly and the current is very high, then
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contact
cell number.
v. If the blower(s) are running fine. Check the controller section on Blowers in
Trouble Shooting.
Check the controller
1.
Make sure the system is shut down and the hydrogen supply is off.
a)
Disconnect the fuel cell stack from the controller.
b)
To check that the controller is operating correctly, review the pin connector drawing
against the pin connector.
c)
Using a multimeter you can check the power being supplied to each of the
peripherals (solenoid valve, purging valve, blowers) of the fuel cell.
i. With the external power supply connected to the controller and the fuel cell not
connected to the controller, start the system up.
ii. The controller will run through the start-up procedure supplying power to the
peripherals.
iii. By checking each pair of pins you will get the following power readings:
Wire colours
Connector pin #
Blue
Yellow
Red
Red and Black
iv. If any of the pins are not supply the voltage then contact
with the diagnostic "Controller not operational" with the controller number and the voltage readings
you are getting from the connector point.
d)
To check the Control chip
i. The system does not need to be started for this.
ii. Connect the multimeter to the fuel cell stack 8 pin connector, pins #4 & #8.
iii. The resistance should be 1076ohms at 20˚C (±3.8ohms for every ±1˚C) of the
fuel cell temperature.
iv. If resistance reading is different then contact
with the diagnostic "Temperature Sensor resistance different" with the fuel cell number and the
resistance readings you are getting from the connector point.
e)
Check your external power supply, to see how much current is being drawn during
the starting time, it should be more than 0.6A for 3
Manual_FCS-C100_V2.2_EN
with the diagnostic "Blower(s) not operational" with the fuel
Connected Peripherals
#1 & #5
Hydrogen purge valve
#2 & #6
Hydrogen supply valve
#4 & #8
Temperature Sensor
#3 & #7
Blowers (Red= +ve, Black= -ve) after 3 seconds 3V constant
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seconds.Check the external power supply
Voltage supplied
12V for 3 seconds
12V constant
0V
30
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