Fan relay

This section is dedicated to discussion of DTA engine control units such as the DTA E48 EXP, P8 Pro, DTA S40, S60, S80, and S100, as well as all things ECU related.

Fan relay

Postby molecular bob » Mon Jun 04, 2018 2:56 pm

I am going to run my radiator fan via the ecu, but what spec of relay should I be using? Most OEM ones seem to have a diode or resister for fans. Would it be wise to do the same? at the moment I have a stock 4 pin hella 30A one, but easy enough to swap it out if it would be better to have a flyback protected one?

Is there a preferred part number for use as a fan relay?

Thanks

Ian B.
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Re: Fan relay

Postby stevieturbo » Mon Jun 04, 2018 5:14 pm

Any simple automotive relay will be fine
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Re: Fan relay

Postby Andy-reid » Tue Jun 05, 2018 12:59 am

usually the relay with the diode across the coil wingdings is there to protect the ecu from back emf and electrical noise in the wiring most aftermarket ecu's seem to be able to tolerate this beter than original units


molecular bob wrote:I am going to run my radiator fan via the ecu, but what spec of relay should I be using? Most OEM ones seem to have a diode or resister for fans. Would it be wise to do the same? at the moment I have a stock 4 pin hella 30A one, but easy enough to swap it out if it would be better to have a flyback protected one?

Is there a preferred part number for use as a fan relay?

Thanks

Ian B.
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Posts: 24
Joined: Sun May 27, 2018 3:28 pm
Location: Berkshire
ECU Model: S80 Pro
Distributor: DTA Direct
Firmware Version: 73.01


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