Air con problem

mellon man · Post by **mellon man** » Mon Sep 02, 2013 6:49 pm

Newbe -My Bongo has the on or off type air con (not the automatic type)
But nothing happens when I press it on the green light comes on but no difference in the blowing air temperature
I set the heater to cold and the air intake to outside but nothing
Do you know how I can tell if the air con unit is working?
Thanks..

Post by **Simon Jones** » Mon Sep 02, 2013 6:55 pm

You should hear a click and the engine revs will change up (normal) or down (if the fast idle solenoid is faulty). The front fans should also come on. If neither happens, check you have a belt on the AC compressor (it's not impossible someone has removed it to mask a fault) and also consider getting it re-gassed. Low gas pressure will prevent the compressor engaging.

Northern Bongolow · Post by **Northern Bongolow** » Mon Sep 02, 2013 8:16 pm

the brown plug on the evaporator at the front can be shorted using a link wire to test if the system works but has no or low gas, if when shorted the compressor starts and the fans kick in then its just a leak or low gas. if nothing happens it could point to the lecky side or the compressor.

mellon man · Post by **mellon man** » Tue Sep 03, 2013 2:08 pm

Northern Bongolow wrote:the brown plug on the evaporator at the front can be shorted using a link wire to test if the system works but has no or low gas, if when shorted the compressor starts and the fans kick in then its just a leak or low gas. if nothing happens it could point to the lecky side or the compressor.

Thanks but your getting a bit to technical for me N.B. where will the evaporator and how do I short it ?

Northern Bongolow · Post by **Northern Bongolow** » Tue Sep 03, 2013 3:07 pm

look through the front grill, or lift the bonnet and look down behind the grill (passy side), you will see 61-503. click the link below.

http://lushprojects.com/bongopartsmk2/c ... 1of02.html.

remove the 2 wire connector on the top and short the plug, not the evaporator, with a jump wire, then press the aircon on button, and see if you can hear the click on the aircon pump and the the front main fans come on. if they do the system main is ok, it may have a leak or need re gassing.

mellon man · Post by **mellon man** » Tue Sep 03, 2013 4:41 pm

Thanks N.B. clear now - done that the difference was with the wires were shorted there was a sort of sound of a switch solenoid type click when I turned the air con on and off but when I put the brown connecter back on the evaporator no such sound.
Also what fans should come on?

Northern Bongolow · Post by **Northern Bongolow** » Tue Sep 03, 2013 4:55 pm

sounds like the system is ok, take it to an aircon man to test for low gas or leaks in the pipe work. £40 £50 on average.

Northern Bongolow · Post by **Northern Bongolow** » Tue Sep 03, 2013 4:57 pm

just a thought

. you did switch the front blower fans on didnt you. at least on low. it wont work if you dont.

mellon man · Post by **mellon man** » Tue Sep 03, 2013 5:17 pm

Yes I did turn on the blower

Thanks for the help N.B. will get it looked at.
By the way I noticed behind the grill a valve on a pipe with a black cap with the letter H on the cap is that where they re gas the air con?

mikeWalsall · Post by **mikeWalsall** » Tue Sep 03, 2013 6:26 pm

The air con guy will have to access two valves one for 'H'igh pressure

...and one for 'L'ow

mellon man · Post by **mellon man** » Tue Sep 03, 2013 7:50 pm

Sorry to be a pain N.B. but were is the location of the valve you show in the second picture ?
Just in case the garage is not ofay with Bongos.
I Really do appreciate all your free time and help you have given me

Northern Bongolow · Post by **Northern Bongolow** » Tue Sep 03, 2013 8:11 pm

it was mike who posted them

.
look under the bonnet straight down the middle towards the steering rack.

mellon man · Post by **mellon man** » Tue Sep 03, 2013 9:14 pm

Whoops

Thanks to mike for the picture ID'S

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