Question about Airtemp B6D30E7A Air Conditioner

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Fan relay wireing

Can i please get a wireing diagram for my intertherm PRA-042k blower fan(relay) thanks

Posted by keithlager on


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It is a peanut style relay with 5 wires. Two which are for a coil, and 1 normally open and one normally closed and one hot. The relay on that model does tell you that.

Posted on Oct 20, 2007


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Time delay relay?

it does have time delay but only for loss of power or if someone plays with thermostat making it go off and on. some time delays have a dial to change length of delay. it would be placed in 24 volt circuit to make or break circuit to contactor.

Sep 15, 2013 | Intertherm P3RA-042K Air Conditioner

1 Answer

My furnace the burners light and come on and heat up the unit. But the fan never kicks on and blows. The fan itself works because I can turn it on manually so I know it's not that. The trouble code...

The manual selection on the thermostat bypasses the fan relay. When in Auto, the fan relay turns on the blower. You are probably looking at replacing the circuit board. As far as the three blinks, on the reverse side of the front panel there is a wiring diagram and error code chart. It will give you a starting point where to look for a problem. The three blinks could indicate an open limit because the blower is not operating. Keep the blower on manual and let the furnace run normally until you can figure out what the problem is.

Feb 23, 2011 | Intertherm Heating & Cooling

2 Answers

I was told my blower motor was bad,I replaced it and still wont work. Any thoughts? Thanks

DANGER: Capacitors can hold a charge for hours, or even days, after an electrical device is turned off. If you don't know what you're doing, simply do not touch any wires, or any places that wires can connect. You can receive a dangerous shock.

Getting to solutions, just at a guess, capacitors go bad more often than motors. Fans have a run capacitor, there might be a start capacitor also. Replacing them both is much cheaper than a service call.

The capacitor(s) is the gray thingie about the size of a deck of cards with wires going to it. Under $20, an appliance parts house is your best bet.

Use only an exact replacement, lay the old one(s) on the counter. The counterman will give you the right item.

Don't overlook the obvious. Bad switch. Loose wire. Blown fuse or tripped breaker. There's a disconnect on the wall, it might have a removable plug, is the plug firmly in?

Mar 28, 2010 | Intertherm P3RA-042K Air Conditioner

1 Answer

Installing hard start

Id suggest you take this set up back because there are several questions need answering before I can tell you what goes where. also you'll have to go and be femilure with the terminals on the run cap and the compressor also.
In lue of the setup you have,  ASK for a relay capicator hard start ALL N 1. 2 wires and a wire diagram on the kit make it easy to install and its self contained  It tjes up a little less room usually too. 

Mar 02, 2009 | Intertherm P3RC-042K Air Conditioner

1 Answer

Heat comes on fan does'nt

diagram sould be on the back of the cover panel over the sequincer and relays

Dec 10, 2008 | Intertherm P3RA-048K Air Conditioner

4 Answers


why did the wiring burn?Id have the heat exchanger inspected before rewiring.better to be safe.

Sep 17, 2008 | Intertherm P3RA-048K Air Conditioner

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