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Troubleshooting A/C 700 1992

posted by  chris herbst on  Thu Mar 7 16:32 CST 2002
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last visit: Mon Oct 20 20:32 CST 2014
[RELATED]

The pressostat connections on the accumulator/dryer should show the same voltage IF the system is charged and the control unit is sending the signal.

As I remember, there were issues with the later 700 and 940 manual climate adjustment switches. I don't recall what the issues were, but they weren't uncommon. I've personally seen a couple of cars with similar situations, but I don't know what the story is with them, not being able to diagnose them myself.

If the pressostat isn't seeing a signal, then the problem is one of the control unit or the wiring to the pressostat. The latter is a very unlikely situation, but it could theoretically happen.
--
chris herbst, five volvos.






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