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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 5135
Experience:  Owner at DJ Wilson
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Error code 1447 how do I fix it, It is a 8kva genset

Customer Question

Error code 1447 how do I fix it
JA: We'll do all we can to help. Tell me a bit more about what's going on so the Heavy Equipment Mechanic can help you best.
Customer: It is a 8kva genset Cummings and it gives me this error as soon as stated
JA: Is there anything else important you think the Heavy Equipment Mechanic should know?
Customer: No just want to fix it
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Heavy Equipment Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 1 year ago.

Hi my name is***** will be glad to try to help. Bare with me while I look up this code

Expert:  Daniel Wilson replied 1 year ago.



Lamp: Shutdown

Indicates that one or more of the phase voltages has dropped below

low ac voltage threshold for time delay seconds.

Expert:  Daniel Wilson replied 1 year ago.



One or more of the phase voltages has dropped below

the Low AC Voltage Threshold

for Low AC Voltage Delay seconds.


Engine will shut down.



1. Fault simulation was 1. With a PC based service

tool, verify that the related fault simulation is

enabled with a PC based service tool.

not enabled.

If you do not have a PC based service tool, remove

battery power from

the control to disable fault simulation overrides.

2. Fault threshold is not set correctly with A PC based service


2. Reset the threshold to the lowest allowable setting. Determine the

required operating range before adjusting the threshold.

3. Overload.

3. Check the load and correct any over

load. Check operation by disconnecting load and restarting generator set.

4. Improper connections have been made at the

generator output terminals.

4. Reconnect according to the appropriate reconnection diagram.

See Section 17.

5. Voltage sense or setup wiring connection could be


5. Check that Voltage senses inputs P22-1 to 4 are

connected to the correct voltage sensing point at alternator.

6. The rotating rectifier

assembly (diodes CR1 through CR6) is faulty.

6. Check each diode. See genset service manual

7. Loose connector or

Base board is bad.

8. Repair connections (P22) or replace the Base board if necessary.

8. AVR or Alternator is


4. Refer to Alternator / AVR Board Isolation Procedure in Alternator

manual to determine if the AVR board is causing the Low AC voltage

shutdown fault.

9. Voltage sense connections/setup could be incorrect

See section 17 for proper connections

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