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Topic: dash air conditioning high pressure switch disconnected (Read 854 times) previous topic - next topic

dash air conditioning high pressure switch disconnected

Any one have an idea why dash air conditioning high pressure switch would be disconnected?  Just replaced dryer receiver and bad expansion valve for dash a/c.  The tech said the other pressure switch on the a/c system had the wires cut.  I am concerned should the condenser fan or fan system fail I may have a serious problem.  This picture shows the cut wires with no other wires to be found.
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
Samsung Residential #RF20HFENBSR,
Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
Extreme Full Body Pt w/hdlmps, new furn/floor, 4 down Lexus 2004 GX470 AWD curb weight 4,740 lbs
Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
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Re: dash air conditioning high pressure switch disconnected

Reply #1 –
The cut wires are on a low pressure switch on the suction line. You need a schematic to see what should be connected.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: dash air conditioning high pressure switch disconnected

Reply #2 –
Our coach (99' U270) has no wire harness connection that goes in that switch, just the empty socket. Never has, as far as I can tell... The other line does have a connection, same as yours.
Don
Quote from: Jack Lewis –
Any one have an idea why dash air conditioning high pressure switch would be disconnected?  Just replaced dryer receiver and bad expansion valve for dash a/c.  The tech said the other pressure switch on the a/c system had the wires cut.  I am concerned should the condenser fan or fan system fail I may have a serious problem.  This picture shows the cut wires with no other wires to be found.
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Don & Tys
1999 U270 3602 WTFE #5402
Xtreme Stage 1 w/Headlight, Step Conversion, etc.
2009 Honda Fit Sport with Navi
Freedom is NOT "just another word for nothing left to lose"... with apologies to Kris Kristofferson

Re: dash air conditioning high pressure switch disconnected

Reply #3 –
Quote from: Don & Tys (AKA acousticart) –
Our coach (99' U270) has no wire harness connection that goes in that switch, just the empty socket. Never has, as far as I can tell... The other line does have a connection, same as yours.
Don
Some foretravel coaches come without high pressure switch on compressor line. They instead use a binary switch mounted on dryer back by rear condenser.Hy-Capacity High-Low Binary Pressure Switch - Female - 8811100
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: dash air conditioning high pressure switch disconnected

Reply #4 –
At some point in time someone may have just put a pressure switch in the socket to fill an empty socket
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: dash air conditioning high pressure switch disconnected

Reply #5 –
Quote from: stump –
At some point in time someone may have just put a pressure switch in the socket to fill an empty socket
If you look at your ac schematic, it shows the pressure switch with no wiring to it. The protection circuit goes through the binary switch on the filter dryer. Had me fooled for a while.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.