outside air door
Thread Starter
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Lead Driver
Joined: Nov 2000
Posts: 6,651
Likes: 352
From: Albuquerque
outside air door
On me 77 with A/C I noticed the outside air door is in the outside air posisition all the time except when I turn the system to off. This does not seem normal. What switch positions should it recirculate inside air?
Posting Guru
Joined: Jul 2001
Posts: 1,613
Likes: 2
From: Gainesville, FL
outside air door
Bear,
The only positions it should be open would be:
1. Heating, i think it should close but I've seen it open on heating
2. Defrost, Need outsidfe air so as to eleiminate humidity in cab.
3. Normal A/C, Not sure on this one.
4. Vent, Pulls outside air to cool cab.
It should close on:
1. Max A/C, no ventilation load, 100% recirc.
Outside air vent should fail closed.
KingFisher
PS There is some speculation in this reply.
The only positions it should be open would be:
1. Heating, i think it should close but I've seen it open on heating
2. Defrost, Need outsidfe air so as to eleiminate humidity in cab.
3. Normal A/C, Not sure on this one.
4. Vent, Pulls outside air to cool cab.
It should close on:
1. Max A/C, no ventilation load, 100% recirc.
Outside air vent should fail closed.
KingFisher
PS There is some speculation in this reply.
