PCC1302 PowerCommand Engine Fault Code 1471 – High AC Current Solution

Here is the instruction show you guide on how to solve PowerCommand Engine/generator fault code 1471-high AC current warning.

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Logic:
The generator output current has exceeded at least 110% of rated current for greater than 60
seconds.

Possible Causes:
1. Short or overload
2. Incorrect CTs, CT connections, or CT setup
3. CT harness connections
4. Incorrect rating setup

Diagnosis and Repair:
1 Short or overload
a. Inspect the load cables and the AC harness connections.
b. Disconnect the AC harness from the load cables.
c. Inspect the AC harness and board connector pins.
d. Visually inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
e. Check for a short circuit to engine block ground.

2 Incorrect CTs, CT connections, or CT setup
a. Check CTs.
a. Check that correct CT’s have been installed.
b. Check that CT connections are secure by zip ties to corresponding wires.
c. Check that CTs are installed in the correct order.
d. Connect InPower.
e. Verify the correct CT ratio has been entered in the generator setup.
f. Adjust the setting(s) as necessary.

3 CT harness connections
a. Measure the resistance of the CT harness on each pin.
b. Disconnect connector P12 from the control board and CTs.
c. Verify the resistance from board connector to CT connections. Resistance should be 5 ohms or less.
d. Measure the resistance of each pin on the CT harness connector to engine block
ground. Resistance should be open or infinite.
e. Verify the CT connections are correct from P12 to the CT terminals.
P12–1 (CT1) to P12–4 (CT1–COM)
P12–2 (CT2) to P12–5 (CT2–COM)
P12–3 (CT3) to P12–6 (CT3–COM)
f. Re-terminate connections as necessary.

4 Incorrect rating setup
a. Connect InPower.
b. Verify the generator rating in the control is set correctly.
c. Verify CT ratings in the control are set correctly.
d. Adjust settings as necessary