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cjaviator
Joined: 20 Aug 2014
Posts: 29
Location: New Zealand
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 Posted: Wed Apr 06, 2016 4:56 pm Post subject: CJ generator warning light circuit inop |
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Hi all,On another CJ we have a problem where the generator warning lights do not work (neither the front or rear cockpit). Bulbs are both fine but neither light comes on when the generator goes off line.. i.e. no lights when engine is not running either.
We can see the generator going off and on-line via the ammeter.
We have tried to check the circuit but cannot find anything of note.
We tried another known voltage regulator in case there was an internal fault, but with no change.
Any thoughts here would be greatly appreciated
Regards, Jay
New Zealand
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wlannon(at)shaw.ca
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| Posted: Thu Apr 07, 2016 7:27 pm Post subject: CJ generator warning light circuit inop |
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Hi Jay;
As you have seen via the ammeter neither the generator nor the control unit have any bearing on the energizing of the gen. warning light.
It is a very simple system using a small relay located in the main power box. The first thing to check is the 2A fuse mounted on the forward side of the box.
The light is energized by battery power from the battery master relay when the master switch is on. That powers the NC (normally closed) contacts of the non-energized relay.
When the generator comes on line it energizes that relay, opens the NC contacts and extinguishes the lights.
Check the fuse, contacts and wiring to the relay. If battery power is there it could be bad relay contacts though they are generally pretty reliable. If no power follow the wire back to the battery master relay. Hopefully you will find a broken wire or bad contact somewhere there.
Walt
From: Jay McIntyre (cjaviator(at)gmail.com)
Sent: Wednesday, April 06, 2016 5:55 PM
To: yak list (yak-list(at)matronics.com)
Subject: CJ generator warning light circuit inop
Hi all, On another CJ we have a problem where the generator warning lights do not work (neither the front or rear cockpit). Bulbs are both fine but neither light comes on when the generator goes off line... i.e. no lights when engine is not running either.
We can see the generator going off and on-line via the ammeter.
We have tried to check the circuit but cannot find anything of note.
We tried another known voltage regulator in case there was an internal fault, but with no change.
Any thoughts here would be greatly appreciated
Regards, Jay
New Zealand
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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