Humminbird AS GRP - User Manual

Other manuals for Humminbird AS GRP

Installation Guide48 pages

Questions and Answers

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Samantha HamiltonAug 7, 2025
What to do if my Humminbird AS GRP GPS is not detecting fish?
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  leslie20Aug 7, 2025
  If your Humminbird GPS is showing no fish even when you know they are present, or if the sonar readings seem weak, consider the following: * Check your Installation Guide to reposition the transducer and ensure it is clean. * Low battery voltage can affect the power of signal transmission. * Electrical noise from the boat’s engine may be interfering with sonar reception. See Finding the Cause of Noise for more information.
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Aaron WilliamsAug 12, 2025
Why does my Humminbird AS GRP control head lose power at high speeds?
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  Sarah RodriguezAug 12, 2025
  If the Humminbird GPS control head loses power at high speeds, and your boat's engine has unregulated power output, ensure that the input voltage does not exceed 20 Volts.
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John HarringtonAug 17, 2025
Why does the bottom disappear on my Humminbird GPS at high speeds?
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  Cynthia CantrellAug 17, 2025
  If the bottom disappears or weakens suddenly, or the display contains gaps when the boat moves at higher speeds, with your Humminbird GPS, it could be due to the following reasons: * The transducer position may need adjustment. Refer to your Installation Guide for suggestions. * Electrical noise from the boat’s engine may be interfering with sonar reception. See Finding the Cause of Noise for more information.
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cwrightAug 22, 2025
How to fix a Humminbird AS GRP that doesn't power up?
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  Jonathan CooleyAug 22, 2025
  If your Humminbird GPS fishing system doesn't power up, correct any known problems. This includes removing corrosion from the battery terminals or wiring, or replacing the battery if necessary.
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Brittany CollinsSep 1, 2025
What to do if my Humminbird AS GRP GPS defaults to simulator mode?
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  Shannon PerkinsSep 2, 2025
  If your Humminbird GPS defaults to simulator with a transducer attached: 1. Check that the transducer cable is securely connected to the fishing system, using the Installation Guide. Reconnect if necessary. 2. If available, replace the non-functioning transducer with a known good transducer. 3. Check the transducer cable for damage or corrosion. Replace the transducer if needed.
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Sharon MooreNov 26, 2025
How to reduce electrical noise on my Humminbird GPS display?
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  Allison MillerNov 26, 2025
  If electrical noise affects the Humminbird GPS display with many black dots at high speeds and high sensitivity readings: * Turn off nearby electronic devices to see if the problem goes away, then turn them on one at a time to see if the noise re-appears. * To determine if the boat’s engine is the source, increase the RPMs while in neutral and stationary to see if the noise increases proportionately. If noise appears when you rev the engine, the problem could be the spark plugs, alternator, or tachometer wiring. Replace the spark plugs with resistor plugs, install an alternator filter, or route the control head power and transducer cables away from the engine wiring. * Ensure the transducer is mounted at least 15” (38 cm) from the propeller, and that water flows smoothly over the tr...