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Problem with Bennett eic switch

Old 07-18-2018, 04:36 AM
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Question Problem with Bennett eic switch

Hi, hope that someone can help with a solution.
Got Bennett Hydraulic trimtabs pro. (Bought them on ebay). After install all worked fine for a while, then the auto fuse went off so I switched to a different fuse due to overload and then everything worked perfect again.... for a while.

Now I suddenly have no lights in the switch, and it dont work.

The switch works to raise the tabs but not when to lower them.
I dont know for sure, cause I can only hear the hyraulic pump work when I press the switch to raise the tabs. Of course they are both up so nothing happens. Just the sound from the pump. When I turn off ignition the also automaticly goes up, even if they allready are up. As they should normally do.

There are 3 glas fuses on the wires to power. 2 of them from the switch. One connected to main power and the other to power when ignition turned on. (a purple and orange wire) They all looked fine, and I have also replaced them.

Any thoughts? I need my tabs :-)

Btw. are there any way of reset the system?

Best regards Odd-Arne Eriksen in Norway.
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Old 07-18-2018, 04:59 AM
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What size fuses are you using at the keypad (should be 1.5 amp) and at the relay module (should be 20 amp) ?

Troubleshooting:

This general information is not intended to be complete. Please feel free to contact Bennett Marine at 954.427.1400 or visit our website at BennettTrimTabs.com for additional information.)

If Trim Tabs do nothing, no movement, no sound from HPU: Inspect 20 amp fuse on orange wire at Relay Module and 1.5 amp fuse on orange wire at display. Inspect all wiring for disconnected or corroded connections.
HPU running but Trim Tabs do not move, or will go down but not retract: Is unit receiving solid 12 volts to EIC Module? Low voltage will sometimes cause solenoids to not open preventing the tabs from moving even though the pump motor is running. Inspect all wiring for disconnected or corroded connections.
Conduct the following test using the “Spare for Auto Tab Control” connector at the EIC Module:
Operation = Reaction
Apply 12 volts (+)to blue, red = Port trim tab down
Apply 12 volts (+)to blue, green = Starboard trim tab down
Apply 12 volts (+)to blue, red, green = Both trim tabs down
Apply 12 volts (+)to yellow, red = Port trim tab up
Apply 12 volts (+)to yellow, green = Starboard trim tab up
Apply 12 volts (+)to yellow, red, green = Both trim tabs up

If the trim tabs function correctly for each wire grouping, then the Display or EIC Wire Harness is at fault.

If the system does not function properly, then conduct the same test using the wire harness connected to the HPU. If the trim tabs function correctly then the Module is faulty. If the trim tabs do not function correctly, the HPU is at fault

Calibration and Operation
• Note: If you have Upper and Lower Helm EIC Displays
installed, calibration must be done at the Primary EIC
Display (connected to the EIC301 - thick gray cable).
Reconnect the battery power to begin the calibration process.
Check trim tab system to ensure it is operational, then put
both trim tabs in the full up position by holding down the
"Bow Up" position.

1. The port and starboard red LEDs will flash alternately,
indicating that the system is not calibrated.

2. Press and hold the sun and moon buttons on the EIC Display
simultaneously for approximately 3 seconds. Both the port
and starboard lower yellow LEDs will begin to flash. Release
the sun and moon buttons.

3. Using the EIC Display, run both trim tabs to the full down
position (Bow Down on the control). Make sure the tabs go all
the way DOWN by holding the buttons down for at least 15
seconds or until the lower yellow LEDs stop flashing. (Holding
the buttons after the tabs are down will not harm the system).

4.A few seconds after the tabs are all the way down the port and starboard upper yellow LEDs will begin flashing. Again, using the EIC Display, run both tabs to the full up position (Bow Up on the control). Make sure the tabs come all the way UP by holding the buttons down for at least 15 seconds or until the upper yellow LEDs stop flashing.

5.The upper and lower yellow LEDs will then light up solidly, indicating that the EIC is calibrated and ready to operate. If you wish to recalibrate the EIC at any time, simply bring the tabs to the full up position, press and hold the sun and moon buttons down and repeat the calibration instructions

Tom McGow
Bennett Marine
Old 07-19-2018, 04:33 AM
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Hi. Thank you for your answer and troubleshooting.
Yup, fuse amp is correct. The battery voltage and amp is showing correct amount, but I have to check with a voltage meter if there could be low voltage.
I hope this is the case. The system is new this year. (Even though the seller on ebay did ship the "older" looking box and not the updatet one. But the system is new and good to go for many years so I did not go any further with it)

Btw. I am a bit supprised that the tabs dont have zinc anodes, I can see rust already around the screws and mounting bracket. I guess I need to give them the same coating as the boat next year.

#OA

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