| [GMCnet] Onan Help [message #221400] |
Fri, 06 September 2013 21:34  |
Betty Chimento
Messages: 20
Registered: August 2013
Karma: 0
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Junior Member |
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Thanks for all the responses & suggestions. We will do some checking & get answers to the questions.
Robin, we will be watching your videos.
Tom, the dash air was cooling & blowing fine. MH was idling for about an hour. The air was still blowing good but got warm.
Thanks for the offers to help in Branson.
Betty & Bill Chimento
Diamondhead, MS
78 GMC Eleganza
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| Re: [GMCnet] Onan Help [message #221408 is a reply to message #221400] |
Fri, 06 September 2013 22:13  |
A Hamilto
Messages: 4508
Registered: April 2011
Karma: 39
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Senior Member |
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| Betty Chimento wrote on Fri, 06 September 2013 21:34 |
Thanks for all the responses & suggestions. We will do some checking & get answers to the questions.
Robin, we will be watching your videos.
Tom, the dash air was cooling & blowing fine. MH was idling for about an hour. The air was still blowing good but got warm.
Thanks for the offers to help in Branson.
Betty & Bill Chimento
Diamondhead, MS
78 GMC Eleganza
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Like I said, an automotive Air Conditioning shop can fix your dash AC. It is not any different than any other automobile air conditioner filled with R12. Find a shop that can charge it with R12, or they will want to make you pay to convert to R134a.
Here's what the GMC Motorhome Maintenance Manual says about no AC power from the Onan:
1. Blown fuse or circuit breaker. 1. Replace fuse or reset breaker and look for cause.
2. Disconnected wire or lead on brushes, bridge rectifier or reactor assembly. 2. Reconnect wire or wires.
3. Brushes not making contact with collector rings. 3. Check brush springs for free movement or brushes which may be excessively worn.
4. Open, grounded or short circuit in field or armature winding. 4. Test with series test lamp and repair or replace as necessary.
5. Defective bridge rectifier assembly. 5. Test with ohmmeter and replace if defective.
6. Bridge rectifier assembly installed wrong in its case. 6. Reinstall making sure marks on case and rectifier match.
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