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thehippie

United States

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Posted: 09/15/19 09:39am Link  |  Quote  |  Print  |  Notify Moderator

When I turn on the dometic heater on my rv, the aircondition would also turn on.

Anyone experienced this?

* This post was edited 09/15/19 10:21am by thehippie *

AVid

SE Michigan

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Posted: 09/15/19 10:48am Link  |  Quote  |  Print  |  Notify Moderator

Place the fan control on the thermostat on "AUTO".

Old-Biscuit

Verde Valley

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Posted: 09/15/19 12:21pm Link  |  Quote  |  Print  |  Notify Moderator

AVid wrote:

Place the fan control on the thermostat on "AUTO".



YEP^^^

Fan control on thermostat is for the A/C Unit Fan.
In Auto the Fan runs when A/C runs
In Manual (high or low) fan runs when A/C runs BUT will also run when furnace runs.

Idea is A/C Fan 'helps' circulate the warm air from furnace (heat rises)

But in reality it just cools the wram air and provides no benefit plus it's noisey.


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DrewE

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Posted: 09/15/19 12:38pm Link  |  Quote  |  Print  |  Notify Moderator

Is the "Dometic heater" perchance a heat strip on the air conditioner? If it is, the fan needs to run for the heat to work.





A1RVTraveler

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Posted: 09/15/19 12:50pm Link  |  Quote  |  Print  |  Notify Moderator

Go to the wall thermostat and push the Mode button until the green light is on in the Fan Position. Use the +/- arrow to move the selection to Auto. You currently have it set to LO or HI.

thehippie

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Posted: 09/19/19 10:10am Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

AVid wrote:

Place the fan control on the thermostat on "AUTO".



YEP^^^

Fan control on thermostat is for the A/C Unit Fan.
In Auto the Fan runs when A/C runs
In Manual (high or low) fan runs when A/C runs BUT will also run when furnace runs.

Idea is A/C Fan 'helps' circulate the warm air from furnace (heat rises)

But in reality it just cools the wram air and provides no benefit plus it's noisey.
thanks

thehippie

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Posted: 09/19/19 10:11am Link  |  Quote  |  Print  |  Notify Moderator

AVid wrote:

Place the fan control on the thermostat on "AUTO".
Thanks

thehippie

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Posted: 09/19/19 10:11am Link  |  Quote  |  Print  |  Notify Moderator

A1RVTraveler wrote:

Go to the wall thermostat and push the Mode button until the green light is on in the Fan Position. Use the +/- arrow to move the selection to Auto. You currently have it set to LO or HI.
Thanks

ktmrfs

Portland, Oregon

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Posted: 09/19/19 12:28pm Link  |  Quote  |  Print  |  Notify Moderator

just went through the same issue with my brother on his trailer with the dometic thermstat and AC. yup, set it to auto made it work like one would expect.

oh, and if for some reason the display changes to degrees C instead of Degrees F, (or vice versa) push the up and down together and hold and it will switch.


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ependydad

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Posted: 09/19/19 01:44pm Link  |  Quote  |  Print  |  Notify Moderator

As mentioned, fan's set to low or high. This question is frequently asked and I have an article about it:
https://learntorv.com/help-ac-comes-on-when-heat-comes-on/


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