Silent Aqualarm – best way to diagnose?

[Larry Backman]

I have a 6 year old Aquaalarm connected to a water flow sensor as well as a raw water temp sensor.

It’s not sounding this year when the keyswitch is turned as has always been the case,

A quick look at wires, sensors, connections, etc. didn’t show anything obviously wrong.

We splashed on Thursday, I wasn’t really paying attention when I started the engine but I thought I heard a weak alarm and then nothing. In 4 starts since, no alarm….

Other than cutting into wires to test voltage is there an easy way to isolate whether I have a bad alarm, bad sensors or bad wiring.

Topic

[Larry Backman]

Solved my own problem

He who wired it ( who wasn’t me!) ran a red wire from the flow sensor to the alarm, a purple wire from the temp sensor to the alarm and powered the two sensors with a black wire tapped off the ignition, fused in the middle of no where and then split to a pair of black wires running to either sensor.

The fuse was salt/moisture corroded…

Fun afternoon for a 1$ part!

[Tony Athens]

Larry,

I think you answered your own question.. Since no one other than you knows how you wired the system. or how it was wired, realistically only you can sort it out..

Tony

[Author]

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