adjust the fan settings not working when the a/c is off

[B18B]

i just install a 180 thermostat and i want to know what is the minimum temperature motor i can adjust the fan settings with the dsp

[340DART]

BI8B

The guidlines I have seen posted by DS people is back off fan settings ten degrees. I have others on this forum say back off 23 degrees 203-180 = 23. I have a truck with mechanical cooling fan so I have no real world experience. You can type a subject in the forum and search for a subject, time consuming yes, but I think these guys get tired of answering the same quesitons over and over.

I think they need to post a FAQ and cover the basics.

[B18B]

ok thank you

I put HS at 190 and LS at 185

[broadfca]

ok thank you

I put HS at 190 and LS at 185

What ever temp your stock T-stat settings are... subtract 180* for the 180* T-stat. Set all your cooling fans at that #. If you set your HS fan too low, you may find that it runs excessively. You should have around 10* difference between the LS and HS fan settings.

It's not unusual to see running temps above 190* from time to time on hot days, especially with the A/C on...or when sitting in traffic.

I have my LS set at 185 and my HS set at 196. Works great. HS fan cycles once in a while but never runs for very long. My average temp is around 185-188.

I got my info from a phone call to DS.

[B18B]

OK thank you

I put HS at 190 and LS at 185

What ever temp your stock T-stat settings are... subtract 180* for the 180* T-stat. Set all your cooling fans at that #. If you set your HS fan too low, you may find that it runs excessively. You should have around 10* difference between the LS and HS fan settings.

It's not unusual to see running temps above 190* from time to time on hot days, especially with the A/C on...or when sitting in traffic.

I have my LS set at 185 and my HS set at 196. Works great. HS fan cycles once in a while but never runs for very long. My average temp is around 185-188.

I got my info from a phone call to DS.

OK thank you very appreciate

[fireman2118]

LS 185 HS 192

[cleary524]

I run my LS at 188, MS at 194 and HS at 197. The MS does come on once and a while on hot days. The LS you can just about hear it on most of the time.

[Quick]

I don't think you have an MS

[bigsnake]

I don't think you have an MS

You are correct, no medium fan so set your HS and MS the same.

[B18B]

my fan go on when the a/c is on at 192
but not when the a/c is off it go at 211

i put all ls 185 and hs 192 a/c on


and i put all ls 185 and hs 192 a/c off

any idea why

[bigsnake]

my fan go on when the a/c is on at 192
but not when the a/c is off it go at 211

i put all ls 185 and hs 192 a/c on


and i put all ls 185 and hs 192 a/c off

any idea why

\\\



Did you set all your parameters correctly ?

Cooling Fans AC off

* High MPH HS Fan On:
High MPH High Speed Fan On when ac is off and above 8mph
* High MPH MS Fan On:
High MPH Medium Speed Fan On when ac is off and above 8mph
* High MPH LS Fan On:
High MPH Low Speed Fan On when ac is off and above 8mph
* Low MPH HS Fan On:
Low MPH High Speed Fan On when ac is off and below 8mph
* Low MPH MS Fan On:
Low MPH Medium Speed Fan On when ac is off and below 8mph
* Low MPH LS Fan On:
Low MPH Low Speed Fan On when ac is off and below 8mph


Cooling Fans AC on

* HS Fan On:
High Speed Fan On when ac is on
* MS Fan On:
Medium Speed Fan On when ac is on
* LS Fan On:
Low Speed Fan On when ac is on

[B18B]

Did you set all your parameters correctly ?

Cooling Fans AC off

* High MPH HS Fan On:
High MPH High Speed Fan On when ac is off and above 8mph
* High MPH MS Fan On:
High MPH Medium Speed Fan On when ac is off and above 8mph
* High MPH LS Fan On:
High MPH Low Speed Fan On when ac is off and above 8mph
* Low MPH HS Fan On:
Low MPH High Speed Fan On when ac is off and below 8mph
* Low MPH MS Fan On:
Low MPH Medium Speed Fan On when ac is off and below 8mph
* Low MPH LS Fan On:
Low MPH Low Speed Fan On when ac is off and below 8mph


Cooling Fans AC on

* HS Fan On:
High Speed Fan On when ac is on
* MS Fan On:
Medium Speed Fan On when ac is on
* LS Fan On:
Low Speed Fan On when ac is on

yes to all

[B18B]

Did you set all your parameters correctly ?

Cooling Fans AC off

* High MPH HS Fan On:
High MPH High Speed Fan On when ac is off and above 8mph = 192f

* High MPH LS Fan On:
High MPH Low Speed Fan On when ac is off and above 8mph = 185f
* Low MPH HS Fan On:
Low MPH High Speed Fan On when ac is off and below 8mph = 192f

* Low MPH LS Fan On:
Low MPH Low Speed Fan On when ac is off and below 8mph =185f


Cooling Fans AC on

* HS Fan On:
High Speed Fan On when ac is on = 192f

* LS Fan On:
Low Speed Fan On when ac is on =185f

srt-4 don't have medium speed fan

yes to all

[DGatzby1]

I run my LS at 188, MS at 194 and HS at 197. The MS does come on once and a while on hot days. The LS you can just about hear it on most of the time.

I understand that some '05 models do indeed have MS fans! Guy on another forum said he sat there and listened to the speeds change!

[B18B]

anybody has an idea why fan does not go when the a/c is off