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Old 10-20-2020, 09:23 PM   #1
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Problem with dash blower

The dash air/heater not blowing air on lever 4 (high) on fan setting. Put a multimeter on it and got these reading:
Lever 1 2.8 Volts
Lever 2 4.4 Volts
Lever 3 - 4.4 Volts
Lever 4 0 Volts

These were taken with the selector switch on A/C, if I turn the selector switch to Max/Air I hear a fan start, not the blower fan. I can tell where it is, could it be the condenser fan?
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Old 10-20-2020, 09:24 PM   #2
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HELP

OK replaced the blower motor resistor, now have 3 speeds, but high. With selector switch to Max/Air and on high the engine cooling fans run. There 2 wires to the blower motor, ground and wire the goes from resistor to the motor. What am I missing??? HELP
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Old 10-21-2020, 07:35 AM   #3
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Oldwirehead, High speed does not go through the resistor there is a relay that bypasses the resistor bank. Here is the link to a Service Tip about the dash heater.
http://www.winnebagoind.com/resource...g%20&%20AC.pdf
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Old 10-21-2020, 09:16 AM   #4
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Thanks a lot!!!
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Old 10-21-2020, 02:51 PM   #5
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Still no high blower speed

I have replaced the relay and the resistor, and no power to blower motor. I need some HELP as where to look now.
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Old 10-21-2020, 03:00 PM   #6
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The high speed blower setting may have a different fuse.
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Old 10-21-2020, 03:00 PM   #7
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https://www.irv2.com/forums/f115/blo...-297782-2.html
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Old 10-21-2020, 03:09 PM   #8
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Pull the hi speed relay and test for battery on one side of the closure contacts.
( the relay will have identification for the contacts) The relay coil may not be getting a signal to operate. That signal will come from the speed selector switch you replaced.

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Old 10-24-2020, 11:18 AM   #9
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ANY HELP I can get

Ok, rehash of problem, no A/C blower fan. Checked ALL fuses, under dash and under hood, no blown fuses. Replaced blower motor resistor and the relay. I now have 3 blower speed 1-3, no MAX/A/C (4).

This is where Im at now, with the engine running and blower switch set to MAX/A/C still no blower fan, but A/C condenser fans run. I hear a loud clicking every 20-30 second coming from under the right side under hood almost like it is in the engine box. I also hear a much lower click and can feel the high blower relay. The A/C condenser fans run with no problem.
Where is the A/C condenser fan relay, and cant find it on the schematic. Looking for ANY HELP I can get.
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Old 10-24-2020, 07:17 PM   #10
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When you switch it to max AC feel of your defroster vents and see if you have air coming out of them.
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Old 10-25-2020, 08:02 AM   #11
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Blower motor not spinning in MAX/A/C
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Old 10-25-2020, 01:21 PM   #12
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And the HOLE GETS DEEPER!

While fighting with the dash blower motor, now have NO power at ignition or accessories. With the ignition turned to start and I press the battery boost switch it will start right up and I have power to accessories. And this is a W22 chassis, ignition switch here are some pictures of it.
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Old 10-26-2020, 09:35 AM   #13
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sounds like a battery connection problem,

Check the connections on the engine starting battery .
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Old 10-26-2020, 01:26 PM   #14
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Back to the blower motor

Not ignition switch, the starter relay under the hood. Now Im back to the blower motor.
This is where Im at now, with the engine running and blower switch set to MAX/A/C still no blower fan, but A/C condenser fans run. I hear a loud clicking every 20-30 second coming from under the right side under hood almost like it is in the engine box. I also hear a much lower click and can feel the high blower relay. The A/C condenser fans run with no problem.
Where is the A/C condenser fan relay, and cant find it on the schematic. Looking for ANY HELP I can get.
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