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Old 03-17-2016, 09:51 AM   #1
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Join Date: Aug 2007
Location: N.E. Indiana
Posts: 21
A/C, Heater blower not working

I've seen occasional postings in the past about connectors usually being the problem, but have been unable to find those conversations now. My Volvo has been sitting way too long I know, only driven every few months to try to offset the afflictions that come with non-useage. The heater fan became intermittent some time back. Sometimes it would would start moving air as soon as the ignition was turned on, then it would work fine for that driving episode. Other times it didn't come on at all. I thought it might be easier to find the problem now, since it doesn't come on at all. I've got the blower motors sitting on the floor, and there's no voltage getting to the connectors in any switch positions. Fuses are okay, the first thing that I checked. Next will be getting to the switch itself to see if there's power getting to it. I noticed that the indicator light on the engine side of the firewall is blinking red, indicating a low charge in the A/C system. Not surprising since they will tend to leak when not being used.

I'm not at all familiar with the operational sequence of these systems. If the system is low on refrigerant, would that prevent the blower from running? I didn't think so since the blower used to come on with the ignition switch before the starter was engaged, but I'm not sure. Anyone have any insight? Thanks in advance,,,
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Old 03-17-2016, 02:44 PM   #2
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Join Date: Aug 2007
Location: N.E. Indiana
Posts: 21
An update for anyone interested, once I got the connectors apart, I was able to find that I actually do have power to the blower, which has failed a bench test......
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heat, heater

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