A/C issue with fan

ITs the control board, the RV dealer change mine last month. and installed a new T-stat. (there diag not mine) I got lucky and exten warranty covered parts labor..4 months before it ends

Maine-iacs wrote:

Blacklane wrote:
This is really hard to understand.
Which fan are you talking about: the A/C fan or the furnace fan?
What do you mean by "heat and/or A/C in the off position"? Are they both off or is one of them on?
Does it matter which position the fan switch is in: "On" or "Auto"?
If we're talking about the A/C fan turning on, does the compressor also run at the same time, or just the indoor fan?
What brand thermostat are we talking about?

The A/C fan is trying to cycle itself evry few minutes.
The thermostat control has one slider switch that has 3 positions. Heat, Off and A/C. I have this in the off position.
Since the thermostat is Off, the fan switch should be dead I assume. But the cycling occurs no matter which position is chosen.

The odds are, if you do NOT have a Lo/Hi or Lo/med/hi fan switch on the tstat, then someone has installed an aftermarket Tstat and THAT may be your problem. Doug
Not really sure if the compressor is trying to cycle.
Not near the rig at this time so I don't know the brand name of the thermostat.

The odds are, if you do NOT have a Lo/Hi or Lo/med/hi fan switch on the tstat, then someone has installed an aftermarket Tstat and THAT may be your problem. Doug

Blacklane wrote:
This is really hard to understand.
Which fan are you talking about: the A/C fan or the furnace fan?
What do you mean by "heat and/or A/C in the off position"? Are they both off or is one of them on?
Does it matter which position the fan switch is in: "On" or "Auto"?
If we're talking about the A/C fan turning on, does the compressor also run at the same time, or just the indoor fan?
What brand thermostat are we talking about?

The A/C fan is trying to cycle itself evry few minutes.
The thermostat control has one slider switch that has 3 positions. Heat, Off and A/C. I have this in the off position.
Since the thermostat is Off, the fan switch should be dead I assume. But the cycling occurs no matter which position is chosen.
Not really sure if the compressor is trying to cycle.
Not near the rig at this time so I don't know the brand name of the thermostat.

This is really hard to understand.
Which fan are you talking about: the A/C fan or the furnace fan?
What do you mean by "heat and/or A/C in the off position"? Are they both off or is one of them on?
Does it matter which position the fan switch is in: "On" or "Auto"?
If we're talking about the A/C fan turning on, does the compressor also run at the same time, or just the indoor fan?
What brand thermostat are we talking about?