Community Forums

S-n-L · 07-20-2014, 08:16 AM

Hello everyone,

My owners manual is a little vague on how this works. This coach is newish to us and this is the first time we would like to use the ags and ac.

Here is my question. I can set the ags to come on at a certain temperature. I can also set the ac to come at a certain temperature. I realize that no two thermostats will ever work exactly synchronized. How do you set the ags and ac so the ac will not attempt to come on before the generator comes on?

Should I set the ags a few degrees lower than the ac or just set them both at the same temperature?

Thanks in advance for your input,

Stuart

cochise1949 · 07-20-2014, 09:34 AM

I think the AGS on my rig can only be set to start whenever the AC runs. Not at a certain temperature. I assume it just uses the thermostat for the AC system. At least it works that way. Still learning though. It is the Onan EC30 system. Also can be programmed to start when batteries get below a set voltage and to shut off when full charge is reached.

Cypressloser · 07-20-2014, 09:59 AM

I would set the AGS to start a deg. or 2 in advance of the AC and just observe what's happening, it might be an advantage to have the thermostat for the AGS and AC in close proximity but I don't know if the AGS has an auto off feature when the generator is no longer needed.

**pasdad1** · 07-20-2014, 10:00 AM

Quote:

Originally Posted by S-n-L

Hello everyone,

My owners manual is a little vague on how this works. This coach is newish to us and this is the first time we would like to use the ags and ac.

Here is my question. I can set the ags to come on at a certain temperature. I can also set the ac to come at a certain temperature. I realize that no two thermostats will ever work exactly synchronized. How do you set the ags and ac so the ac will not attempt to come on before the generator comes on?

Should I set the ags a few degrees lower than the ac or just set them both at the same temperature?

Thanks in advance for your input,

Stuart

In the end don't think it really matters. If the A/C attempts to come on before the generator, nothing happens ( ....120 v power is "off"). When the generator does start, there is usually a 30 second delay while the generator gets up to speed and it switches over to power the load, then the A/C starts because now 120 v is available.

Cypressloser · 07-20-2014, 10:14 AM

Quote:

Originally Posted by pasdad1

In the end don't think it really matters. If the A/C attempts to come on before the generator, nothing happens ( ....120 v power is "off"). When the generator does start, there is usually a 30 second delay while the generator gets up to speed and it switches over to power the load, then the A/C starts because now 120 v is available.

You are probably correct and I was probably wrong.

Nubulin · 07-21-2014, 03:18 PM

What coach and what AGS? There is an AGS me u on my magnum inverter and it does nothing because there is no AGS module.

With the ONAN AGS, when the thermostat calls for AC, it starts the generator, then when there is no more call for AC, the generator will stop after a few minutes.

I think setting a temp on a separate module is making it more complicated than you need to. Remember that sometimes systems overlap since all coaches are a collection of parts from many manufacturers.

britcon · 07-21-2014, 09:19 PM

On my Newmar, when I am plugged in to a 50A service I have all the power I need for ( 2 ) 15k AC Units.
When " boondocking ", when AC system calls for cooling, AGS senses the electrical demand and starts the Genset. AC Units kick on after a short delay.

rssnape · 07-22-2014, 08:02 AM

Researching an AGS from Magnum Energy to go with my inverter it's temperature sensor is separate from the coach thermostat. The AC units on my coach won't run until there is AC power from shore or gen. Setting thermostat lower than that of AGS will assure that AGS will be satisfied and shut down the genset. If the thermostat was set higher than that of AGS the genset would continue running even though AC units had shut down.