Community Forums

Affinityfan · 03-12-2018, 07:25 PM

I have a 115v Thomas air compressor in the 1st drivers side bay. The coach is a 2000 Affinity. It has never worked.

Two questions:

Was this a stock item.

What exactly is it's purpose.

Feel free to chime in if you had any experience dealing with this.

Thanks in advance.

Fredward · 03-12-2018, 10:25 PM

Our 2000 Magna has one too. I think the coaches with HWH air leveling all came with that compressor. If you use auto level when parked, I think it is designed to keep air in the system and maintain level in the event of leaks. Ours works fine and will come on sometimes when leveling.

Our coach is wired so the HWH only works with the engine shut off. So if you're doing a lot of leveling, you will use up the air in the storage tanks and the compressor comes on to supplement the effort and finish the job. Once you're level, it will keep the coach level if you select auto level.

I have read here that they are available for purchase. You might want to check wiring and the circuit breaker first to make certain power isn't the problem.

phays · 03-13-2018, 06:03 AM

Sure it is 115 Volts?

The Thomas air compressor that was in my front run bay is a 12 volt DC on a 20 amp fused circuit. Replaced it with a Viair 330C with greater capacity.

Affinityfan · 03-13-2018, 07:39 AM

Quote:

Originally Posted by Fredward

Our 2000 Magna has one too. I think the coaches with HWH air leveling all came with that compressor. If you use auto level when parked, I think it is designed to keep air in the system and maintain level in the event of leaks. Ours works fine and will come on sometimes when leveling.

Our coach is wired so the HWH only works with the engine shut off. So if you're doing a lot of leveling, you will use up the air in the storage tanks and the compressor comes on to supplement the effort and finish the job. Once you're level, it will keep the coach level if you select auto level.

I have read here that they are available for purchase. You might want to check wiring and the circuit breaker first to make certain power isn't the problem.

The tag on the compressor lists 115v which suggests that this is running off shore or generator power when parked

Affinityfan · 03-13-2018, 07:41 AM

Quote:

Originally Posted by phays

Sure it is 115 Volts?

The Thomas air compressor that was in my front run bay is a 12 volt DC on a 20 amp fused circuit. Replaced it with a Viair 330C with greater capacity.

The tag on the compressor lists the voltage at 115.

Affinityfan · 03-13-2018, 07:42 AM

Where is the breaker circuit/fuse.

Affinityfan · 03-17-2018, 05:35 PM

Just decided to take it in for repair.

Fredward · 03-17-2018, 11:53 PM

It’s not 115vac. Definitely 12 volt in our coach.

Affinityfan · 03-18-2018, 10:32 AM

Quote:

Originally Posted by Fredward

It’s not 115vac. Definitely 12 volt in our coach.

What year coach do you have and how does the 12v compressor operate with the engine off.

**CountryFit** · 03-18-2018, 04:11 PM

the oe pump has to be 12v. when you level and done with it, the pump could be standby for days or months until you either start engine again, or you press the off button on hwh panel. the entire time only 12v is available (in most cases). i wouldn't think it'd be logical for cc to ask you to start genset or connect shore power to do it. mine is 12v.

Affinityfan · 03-19-2018, 04:32 PM

Nothing new here. The Techs are working on it.

sanddan · 03-19-2018, 07:52 PM

Quote:

Originally Posted by phays

Sure it is 115 Volts?

The Thomas air compressor that was in my front run bay is a 12 volt DC on a 20 amp fused circuit. Replaced it with a Viair 330C with greater capacity.

On the Viair 330C does it level the coach faster? At least enough faster to notice. Just curious.

Rsponsford · 03-22-2018, 03:12 AM

I replaced mine with a Vlair unit. Works great. The only downside is that the Vlair is louder than the Thomas unit. I installed an additional cutoff switch inside in case I don’t want the compressor to cycle on in the middle of the night or while in storage. It’s definitely 12V DC powered and is primarily for the HWH leveling but also provides air pressure for the entry step cover and auxiliary air tank supply coupling in the auxiliary compartment under the driver’s seat.