Question about Airtemp B6D30E7A Air Conditioner

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Airtemp rooftop package AC unit M/N- RT-3130-01, what is the capacity of this unit

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RT stands for Rooftop
3 stands for 3 Phase, 1 for single compressor and the remaining 30 stands for 30kW nominal cooling.

Posted on Sep 18, 2012

  • toddsteele72
    toddsteele72 Sep 20, 2012

    Sorry, I need to make a correction.

  • toddsteele72
    toddsteele72 Sep 20, 2012

    RT is for Roof Top...first 3 is for 3 Phase, the 1 is actually for COOLING ONLY and as previously stated, the final 2 numbers are for nominal capacity in kW. If you see a 2 as the 2nd number, it means HEAT/COOL.


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Posted on Jan 02, 2017

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SOURCE: We have a Coleman 7300 rooftop ac unit. When the

The fan motor is getting hot and going off on the internal overload in the motor.
This is caused by either a low voltage, a bad capacitor, or tight or dry bearings in the motor.
To check the bearings turn the power off to the unit, then spin the fan blade if it spins freely then the bearings are ok.
To check the capacitor you will need some kind of
tester or you can buy a capacitor and replace it, that's what a lot of people do. They usually don't cost very much.
To check the voltage you will need a voltmeter and measure the volts at the unit.

Posted on Jun 09, 2009

  • 127 Answers

SOURCE: coleman rooftop a/c unit is fried? i plugged my

If there Air Conditioner is wall thermostat controlled, then take the front cover off the thermostat and check the fuse. If the fuse is ok, then take the inside cover of the AC down and pull down the control box that is mounted in the intake section of the AC. It is held on with two wing nuts. Remove the cover and observe the relays and the incoming AC wiring. Make sure that none of this is burnt. If all looks ok, turn power on and turn the thermostat to High Cool and check if you can hear the relay click inside the control unit. If not, then check to see if the thermostat has 12V going to it. Start there and see how that goes.

If it is controlled by the ceiling mount t-stat and selector switch. Remove the inner shroud and check the incoming AC wires for OK. If they look ok then check the selector switch and the thermostat.

The Refer has protection from this. Depending on which refer you have (Dometic or Norcold), the process is a tad different. If it is a dometic, go to the outside of the coach and remove the access panel on the rear of the refer. Remove the black cover from the control board (lower left side) and check to make sure that the 120V fuse is good (You will need an ohmmeter to check). If it is fine the check to see if you have power going into the 12V block at the very bottom, rear of the refer. If there is 12V there, then check the plug that the Refer is plugged into for 120V. If none, check the GFCI circuit in either the bathroom of the kitchen. If tripped you will have no power to fridge. Start there and then we will move forward.

Basic same checks for a norcold, board is harder to remove as you have remove wires. Mark and remember where they go.

Hope this helps,


Posted on Jun 30, 2009

  • 59 Answers

SOURCE: How to identify the btu of rooftop AC unit

ANY # DIVISABLE BY 12. MODEL HAS  12-24-30-36-40-48-54-60 12 1 TON 24 2 TON 30 2 1/2 36  3 TON 36.00 BTU 40 3 1/2 48 4 TON 48.00 BTU 54  4 1/2 60 5 TON   60.000 BTU

Posted on Apr 21, 2010

  • 1 Answer

SOURCE: I was loking for the Capacity of an Airtemp

its a nominal 41.5kWr (has 2 x 6.5 hp mitsubushi compressors JH519YEP)

Posted on May 17, 2010

  • 1768 Answers

SOURCE: I cannot read the model of Package AC with electric heat strips,

Here is a site that may provide you with all that information.

Posted on Jun 18, 2010

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How to identify the btu of rooftop AC unit

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