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48DD0284 model I am wanting a part number for a Time delay relay. Dont know how to look up

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Carrier time delay relay can be replaced by generic icm time delay 5 minute delay on break or a new digital stat that has a 5 min time delay built in. simply break the yellow wire through the low voltage at the condensor. usually a common and a yellow in and a yellow out are connected to the old relay. sometimes a red as well. the old relays needed power and a common all the time and a yellow in when contactor call is sent and a yellow out to the contactor after delay times out. new two wire delays only need power in and power out. they have a dial to adjust desired delay 0 to 5 minutes. good luck good luck

Posted on Dec 07, 2008

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I looked up information and the unit is obsolete. I also did not see a time delay in the diagram with the original unit. It must have been added later. Post me back and let me know where it goes and what numbers it has on it.

Posted on Dec 01, 2008

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My bryant furnace fan will not turn on. Everything is sequencing, the induction fan starts and the flame lights, but the fan will not turn on. The capacitor reads 4.86 uf. Any suggestions?


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How old is the intertherm. The old ones have fan limit switch and sometimes they stick. The new ones have a fan baord or time delay relay. They go bad from moisture and they just go bad sometimes. It sounds like you just have a shorted relay. If you think you can replace it you can get a relay at any parts store. Need the model number of unit. If not just call a service tech for free estimate. Russ

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Make sure to turn off the furnace at the breaker or disconnect switch before attempting to touch the electronics of the furnace. Also look around the furnace for an owners manual. The manual will have the process for changing the blower off delay. I have given you a pretty generic process below. If you need more specific directions I will need your model and serial number. If your furnace is new enough I may be able to find your manual in our system. Good Luck:)

In most cases a circuit board model will have a small (1/4 inch x 1/8 inch) black, plastic jumper. I think I remember that some can be red also. Anyway This jumper is plugged on to two vertical prongs coming from the board. There are other bare prongs on either side of the jumper. If you look at the writing on the board you will see different numbers ranging from 60 to 190. These numbers represent seconds in time. You can change this jumper to match the seconds that you want for the blower off delay.

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There are potentially 3 time delay relays in this system.

1) Many digital Thermostats come with compressor ON delays that are not serviceable.
2) There is an accesory manual Time delay available for this unit. It is also a compressor ON delay. (located in the electrical compartment of the condenser)
3) Most newer furnaces have a blower OFF delay (set manually at the circuit board.

I have the technical manual for this unit if you need it.

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