Kahlenberg M-485B User Manual (English)

Questions and Answers:

M
Margaret ChanAug 11, 2025
Why are my Kahlenberg Controller M-485B signals not sounding correctly?
- B
  Brittany FrazierAug 11, 2025
  If the M-485B Controller signals are not sounding correctly and the PCB resets after every horn blast, the cause may be incorrect wiring. To resolve this, verify that if you are using wiring diagram 3-7584 or 3-7577, the red jumper wire from J1 to J8 is in the 3rd terminal on J8, and the wire out from J8 to valve is in the 4th terminal. Reversing these wires can cause the signals to sound incorrectly.
G
Gail CarpenterAug 20, 2025
What to do if Kahlenberg Controller M-485B sends current to the solenoid valve but the air horn does not sound?
- C
  Christopher MartinezAug 21, 2025
  If the M-485B Controller is sending current to the solenoid valve but the air horn isn't sounding, it could be due to the solenoid valve voltage not matching the incoming M-485B voltage. Replace the solenoid valve with one that meets the correct voltage requirements. Another possible cause is that the solenoid valve body is installed backwards in the air line. Verify the correct installation; an arrow on the valve body indicates the correct airflow direction, or '1' stamped on the valve indicates the air inlet, and '2' indicates the outlet to the horn.
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pcontrerasSep 1, 2025
How to troubleshoot a non-functioning Kahlenberg Controller M-485B?
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  Debbie WalterSep 1, 2025
  If your Kahlenberg M-485B Controller is not functioning, it could be due to a blown fuse or incorrect wiring. Check the 2 Amp fuse on the main circuit board. If the fuse is blown, this indicates that the unit is drawing too much amperage. Refer to the “Electrical Connections” section to verify that the wiring is correct for the type of horn being used (air horn vs. electric horn).

Kahlenberg M-485B Specifications

General

Brand	Kahlenberg
Model	M-485B
Category	Controller
Language	English

Kahlenberg M-485B User Manual

Table of Contents

Questions and Answers:

Kahlenberg M-485B Specifications