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aiddings15 
Newbie 
Joined: 13 Mar 2017 Location: florida Online Status: Offline Posts: 4 |
 Calendar Event: my ac and furnace wont work but fan runs?Posted: 13 Mar 2017 at 3:53pm |
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furpod
Moderator Group - pHp 
Joined: 25 Jul 2011 Location: Central KY Online Status: Offline Posts: 6128 |
Posted: 13 Mar 2017 at 5:18pm |
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Going to need more information...
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aiddings15
Newbie
Joined: 13 Mar 2017 Location: florida Online Status: Offline Posts: 4 |
Posted: 13 Mar 2017 at 6:00pm |
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i changed the thermostat already i thought that might be the problem but the fan will run in the on position but the furnace wont kick on and neither will the ac i turned the breakers off and on and checked the gas i cant figure out why it isnt working it is an rpod 171
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adamas
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ToolmanJohn
Senior Member 
Joined: 23 Apr 2014 Location: Connecticut Online Status: Offline Posts: 451 |
Posted: 13 Mar 2017 at 6:07pm |
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What thermostat ? Dometic digital? Suburban?
Remember you MUST have 120VAC shore power to run the ceiling fan inside the A/C unit. It will NOT run on 12VDC alone. The furnace CAN run on 12VDC alone, but the fan setting MUST BE AUTO.
My Dometic had three fan settings : Auto, Lo, Hi In heat mode, the correct setting is AUTO, and must have a 12 volt battery installed (strange but true or the furnace control board gets snippy, it likes a solid 12 vdc and the converter doesn't do smooth DC) In Cool Mode, Lo, Hi, seemed to work, and must be on shore power (120VAC source). No 120VAC, NO A/C fans. In Fan mode, Lo, Hi, and must have shore power (again 120VAC or no fan). |
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2017 ATC 7X20 Custom Toy Hauler
2013 R-Pod 177 (SOLD) 2013 VW Touareg TDI |
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aiddings15
Newbie
Joined: 13 Mar 2017 Location: florida Online Status: Offline Posts: 4 |
Posted: 13 Mar 2017 at 6:13pm |
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my fan runs on dc and it is a dometic but not digital and the furnace wont run on 12 volt dc and i havent taken it anywhere to test the ac since i replaced the thermostat
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adamas
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aiddings15
Newbie
Joined: 13 Mar 2017 Location: florida Online Status: Offline Posts: 4 |
Posted: 13 Mar 2017 at 6:18pm |
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the fan mode has auto high and lo as well
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adamas
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voisj
Senior Member
Joined: 19 Jul 2016 Location: San Luis Obispo Online Status: Offline Posts: 471 |
Posted: 19 Mar 2017 at 1:11am |
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I just went out and played with mine. My furnace fan will only come on when I'm Heating. And only blows at 1 speed, I could not get the furnace fan to go on by itself. It will not go on at all unless the gas is turned on and the temp is turned up higher than the inside temp.
The ceiling Fan will not come on unless I have shore power, with shore power it has high or low and ac Sounds like the pressure sensing switch is acting up if it blows but no heat. Rgds John
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my ac and furnace wont work but fan runs? - Event Date: 11 Mar 2017 - 20 Mar 2018