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Old 11-15-2014, 07:43 AM   #1
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Rewire Thermostat?

Is it possible to re-wire/change a Coleman Mach digital thermostat so you can run the ac blower with the furnace on? Now, I can run the ac blower and the furnace blower by using a separate switch on the furnace blower, but if I switch the thermostat from auto or cool to heat, the ac blower shuts off.
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Old 11-15-2014, 09:48 AM   #2
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Would like to help you if I can, could you shoot me a picture of your sub base with how it's wired. There is another post going today that the guy wanted to know how to shut off his blower when the furnace is running. I don't know what stat he has through. Alot of people told him to put it in auto and not on. Don't understand why yours is shutting down.
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Old 11-15-2014, 09:53 AM   #3
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Every trailer we've had did the same thing regardless of what AC brand or thermostat. Even the Hunter I had on the 08.
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Old 11-15-2014, 10:04 AM   #4
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It just could be your sub base, but there might be away around that. I assume you have RH and RC,W and G terminals also a C for Common?
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Old 11-15-2014, 10:21 AM   #5
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Really a mute point, we don't run the furnace anyway, we use the EdenPure with the furnace blower and with the ceiling fan the roof fan is unnecessary. It was just a thought.
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Old 11-15-2014, 10:43 AM   #6
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Originally Posted by OldCoot View Post
Really a mute point, we don't run the furnace anyway, we use the EdenPure with the furnace blower and with the ceiling fan the roof fan is unnecessary. It was just a thought.
sorry can't read it not clear, should be like this.http://www.rvnetwork.com/uploads/mon...1399403575.jpg
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Old 11-15-2014, 10:47 AM   #7
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Put a jumper from RH to w to see if the furnace starts then add jumper at the same time to green and see if the fan comes on. If it does then it's your sub base or wiring.
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Old 11-15-2014, 10:49 AM   #8
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Thanks, but don't worry about it. It was just a passing thought. The wiring is the same as it was on the factory thermostat. It is a direct replacement. The Cool Off Heat switch shuts the AC off completely when in the Off or Heat position.
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Old 11-15-2014, 11:29 AM   #9
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Thanks, but don't worry about it. It was just a passing thought. The wiring is the same as it was on the factory thermostat. It is a direct replacement. The Cool Off Heat switch shuts the AC off completely when in the Off or Heat position.
Okay just trying to help you after all the help you have given me......Safe travels to Florida....
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Old 11-15-2014, 03:06 PM   #10
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Okay just trying to help you after all the help you have given me......Safe travels to Florida....
This is the answer from Colman just got it:Put the switch on the thermostat on, "Fan"

Posted on Nov 15, 2014
Put the switch on the thermostat on, "Fan"

Don't know what else to say....Sorry....
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Old 11-18-2014, 10:42 AM   #11
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Quote:
Originally Posted by gljurczyk View Post
This is the answer from Colman just got it:Put the switch on the thermostat on, "Fan"

Posted on Nov 15, 2014
Put the switch on the thermostat on, "Fan"

Don't know what else to say....Sorry....
I have just got off the phone with airxel the supplier for Coleman mach, There tech now say's that there digital stats will not allow that use. Reviews on Amazon say it will but the manufacturer say's no. So much for amazon reviews to there products. Also coleman techs. ( this has to do with running your A/C blower with your furnace on)
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