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 Low air pressure alarm continues.		  New Topic  Reply to Topic
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lorensim
New Member

3 Posts
Posted - 06/30/2016 :  7:46:12 PM  Show Profile  Visit lorensim's Homepage  Reply with Quote
I have a 2007 Thomas C2,. Air pressure is building up and dumping normally. But the alarm/warning indicating low pressure, does not go off.

If someone could point me in the right direction to fixing this issue, I'd really appreciate it.

g0ttadrift
Advanced Member

USA
258 Posts
Posted - 07/01/2016 :  1:51:31 PM  Show Profile  Reply with Quote
Pressure switch could be stuck or positive wire could be shorted to ground. I'd find the switch and give it a tap, see what it does. We've had it the opposite way where air pressure would be low and we'd have no alarm. The switch rotted internally. Replaced the switch and all was well.
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lorensim
New Member

3 Posts
Posted - 07/01/2016 :  2:12:05 PM  Show Profile  Visit lorensim's Homepage  Reply with Quote
Thank you for your suggestion. Now I just need to locate the switch.
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lorensim
New Member

3 Posts
Posted - 07/02/2016 :  12:50:22 PM  Show Profile  Visit lorensim's Homepage  Reply with Quote
I can't seem to find the switch. Can someone point me in the right direction please.
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g0ttadrift
Advanced Member

USA
258 Posts
Posted - 07/05/2016 :  8:11:35 PM  Show Profile  Reply with Quote
It should be on a junction block connected to the wet tank. It should be a two wire switch with one wire going straight to ground right by the switch.
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KnuckleBuster76
Active Member

45 Posts
Posted - 07/13/2016 :  05:01:12 AM  Show Profile  Reply with Quote
Sound like the switch, for sure. Should be located ON the air governor itself, screwed directly into it with just one wire connected.
"Just... I dunno... Just fix it."
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Dchandler18
New Member

5 Posts
Posted - 08/01/2016 :  4:43:19 PM  Show Profile  Visit Dchandler18's Homepage  Reply with Quote
Check your roof hatches. Tone sounds the same as low air buzzer.
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