Re: Flow Bars not lighting
The HFS3 or HFS4 is completely different from the HFS-5. There are no similar parts between them. You only need the HFS4 as it is mainly for DI engines.
We now have a replacement newer flow sensor to replace the HFS5's flow sensor. The part number is 806-428H. It appears you may not need it as you have found your problem.
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Richard L
aquamist technical support
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