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Topic: A/C binary switch (Read 552 times) previous topic - next topic

A/C binary switch

I am "overhauling" my condenser and frame for the dash A/C.  I've taken everything apart and am now reassembling it.  I found a dryer (accumulator) but am having difficulty in identifying the binary switch that is attached to it.  Does anyone have info/part number for this?  Thanks
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: A/C binary switch

Reply #1 –
Not sure,but on automotive systems it is usually a low pressure switch.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: A/C binary switch

Reply #2 –
Quote from: John44 –
Not sure,but on automotive systems it is usually a low pressure switch.
I believe it shuts down the compressor if it exceeds a certain threshold.  Knowing what that limit is will help ID the switch.  Some of these switches (trinary?) also monitor the temps and affect the fan operation.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: A/C binary switch

Reply #3 –
Sven, sent you a PM with a drwg and parts.
johnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: A/C binary switch

Reply #4 –
That is the high pressure switch at the condenser, your low pressure switch is at the compressor inlet.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: A/C binary switch

Reply #5 –
They make high pressure switches that also shut off with too low of pressure (like if a line blows and all the charge leaves). This is the only scenario I can think of where I high pressure would also shut off compressor on low pressure.

The low pressure switch  would be on the suction side. There also may be a thermostat.
1998 U270 34'

Re: A/C binary switch

Reply #6 –
Quote from: krush –
They make high pressure switches that also shut off with too low of pressure (like if a line blows and all the charge leaves). This is the only scenario I can think of where I high pressure would also shut off compressor on low pressure.

The low pressure switch  would be on the suction side. There also may be a thermostat.
There is a thermostat and it shuts the compressor off at 40 deg. at the register.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: A/C binary switch

Reply #7 –
I'm just looking for the brand and part number of the thingamagig that is attached to the dryer/accumulator.  If I get up early enough in the morning I might be able to find someone at Foretravel that will answer the phone.

2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: A/C binary switch

Reply #8 –
On my 91 that switch is the trinary switch it controls the electric cooling fans on condenser and thr compressor clutch, not sure on yours got a replacement from foretravel.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: A/C binary switch

Reply #9 –
Finally nailed this critter down!  I talked to a rep at SGM and she sent me a drawing with all specs for the binary switch.  I should be able to match this up with the accumulator I recently bought.
With regard to pricing:  My new accumulator cost me $50.  Foretravel will only sell the switch and accumulator as a package for $130 (I'm rounding).  SGM will sell an accumulator for $118 and the switch close to another $50.  I'll bring the drawing with specs down to my A/C guy and hopefully have the switch by tomorrow.
Thanks for all the responses.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: A/C binary switch

Reply #10 –
We are dying to know what the switch is for and what it does.
96 U270 BUILD 4810
85 380SL
Drummonds TN.